mirror of
https://github.com/dart-lang/sdk
synced 2024-11-02 10:49:00 +00:00
7387682bec
Change-Id: I95543f88a64884bf2334165baa986d381bbf7872 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/141241 Commit-Queue: Karl Klose <karlklose@google.com> Reviewed-by: Karl Klose <karlklose@google.com>
592 lines
22 KiB
Dart
Executable file
592 lines
22 KiB
Dart
Executable file
#!/usr/bin/env dart
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// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Run tests like on the given builder and/or named configuration.
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import 'dart:async';
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import 'dart:convert';
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import 'dart:io';
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import 'package:args/args.dart';
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import 'package:smith/smith.dart';
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import 'bots/results.dart';
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const int deflakingCount = 5;
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/// Quotes a string in shell single quote mode. This function produces a single
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/// shell argument that evaluates to the exact string provided, handling any
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/// special characters in the input string. Shell single quote mode works uses
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/// the single quote character as the delimiter and uses the characters
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/// in-between verbatim without any special processing. To insert the single
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/// quote character itself, escape single quote mode, insert an escaped single
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/// quote, and then return to single quote mode.
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///
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/// Examples:
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/// foo becomes 'foo'
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/// foo bar becomes 'foo bar'
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/// foo\ bar becomes 'foo\ bar'
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/// foo's bar becomes 'foo '\''s bar'
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/// foo "b"ar becomes 'foo "b"'
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/// foo
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/// bar becomes 'foo
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/// bar'
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String shellSingleQuote(String string) {
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return "'${string.replaceAll("'", "'\\''")}'";
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}
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/// Like [shellSingleQuote], but if the string only contains safe ASCII
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/// characters, don't quote it. Note that it's not always safe to omit the
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/// quotes even if the string only has safe characters, as doing so might match
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/// a shell keyword or a shell builtin in the first argument in a command. It
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/// should be safe to use this for the second argument onwards in a command.
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String simpleShellSingleQuote(String string) {
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return new RegExp(r"^[a-zA-Z0-9%+,./:_-]*$").hasMatch(string)
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? string
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: shellSingleQuote(string);
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}
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/// Runs a process and exits likewise if the process exits non-zero.
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Future<ProcessResult> runProcess(String executable, List<String> arguments,
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{bool runInShell = false}) async {
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final processResult =
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await Process.run(executable, arguments, runInShell: runInShell);
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if (processResult.exitCode != 0) {
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final command =
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[executable, ...arguments].map(simpleShellSingleQuote).join(" ");
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throw new Exception("Command exited ${processResult.exitCode}: $command\n"
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"${processResult.stdout}\n${processResult.stderr}");
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}
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return processResult;
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}
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/// Runs a process and exits likewise if the process exits non-zero, but let the
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/// child process inherit out stdio handles.
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Future<ProcessResult> runProcessInheritStdio(
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String executable, List<String> arguments,
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{bool runInShell = false}) async {
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final process = await Process.start(executable, arguments,
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mode: ProcessStartMode.inheritStdio, runInShell: runInShell);
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final exitCode = await process.exitCode;
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final processResult = new ProcessResult(process.pid, exitCode, "", "");
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if (processResult.exitCode != 0) {
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final command =
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[executable, ...arguments].map(simpleShellSingleQuote).join(" ");
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throw new Exception("Command exited ${processResult.exitCode}: $command");
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}
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return processResult;
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}
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/// Finds the branch of a builder given the list of branches.
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String branchOfBuilder(String builder, List<String> branches) {
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return branches.where((branch) => branch != "master").firstWhere(
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(branch) => builder.endsWith("-$branch"),
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orElse: () => "master");
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}
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/// Finds the named configuration to test according to the test matrix
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/// information and the command line options.
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Map<String, Set<Builder>> resolveNamedConfigurations(
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TestMatrix testMatrix,
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String requestedBranch,
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List<String> requestedNamedConfigurations,
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String requestedBuilder) {
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assert(requestedBranch != null);
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final testedConfigurations = <String, Set<Builder>>{};
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var foundBuilder = false;
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for (final builder in testMatrix.builders) {
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if (requestedBuilder != null && builder.name != requestedBuilder) {
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continue;
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}
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final branch = branchOfBuilder(builder.name, testMatrix.branches);
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if (branch != requestedBranch) {
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if (requestedBuilder == null) {
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continue;
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}
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stderr.writeln("error: Builder $requestedBuilder is on branch $branch "
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"rather than $requestedBranch");
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stderr.writeln("error: To compare with that branch, use: -B $branch");
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return null;
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}
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foundBuilder = true;
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for (final step in builder.steps.where((step) => step.isTestStep)) {
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final testedConfiguration = step.testedConfiguration;
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if (testedConfiguration == null) {
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// This test step does not use a configuration; for example,
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// because it is a simple script that does not produce results.
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continue;
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}
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final namedConfiguration = testedConfiguration.name;
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if (requestedNamedConfigurations.isEmpty ||
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requestedNamedConfigurations.contains(namedConfiguration)) {
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testedConfigurations
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.putIfAbsent(namedConfiguration, () => {})
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.add(builder);
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}
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}
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}
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if (requestedBuilder != null && !foundBuilder) {
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stderr.writeln("error: Builder $requestedBuilder doesn't exist");
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return null;
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}
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if (requestedBuilder != null &&
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requestedNamedConfigurations.isEmpty &&
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testedConfigurations.isEmpty) {
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stderr.writeln("error: Builder $requestedBuilder isn't testing any named "
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"configurations");
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return null;
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}
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if (requestedNamedConfigurations.isNotEmpty) {
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var hasUntestedConfiguration = false;
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for (final requestedConfiguration in requestedNamedConfigurations) {
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if (!testedConfigurations.containsKey(requestedConfiguration)) {
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final builder = requestedBuilder != null
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? "builder $requestedBuilder"
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: "any builder";
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stderr.writeln("error: The named configuration "
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"$requestedConfiguration isn't tested on $builder");
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hasUntestedConfiguration = true;
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}
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}
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if (hasUntestedConfiguration) {
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return null;
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}
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}
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return testedConfigurations;
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}
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/// Locates the merge base between head and the [branch] on the given [remote].
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Future<String> findMergeBase(String remote, String branch) async {
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final arguments = ["merge-base", "$remote/$branch", "HEAD"];
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final result =
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await Process.run("git", arguments, runInShell: Platform.isWindows);
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if (result.exitCode != 0) {
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throw new Exception("Failed to run: git ${arguments.join(' ')}\n"
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"stdout:\n${result.stdout}\n"
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"stderr:\n${result.stderr}\n");
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}
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return LineSplitter.split(result.stdout).first;
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}
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/// Exception thrown when looking up the build for a commit failed.
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class CommitNotBuiltException implements Exception {
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final String reason;
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CommitNotBuiltException(this.reason);
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String toString() => reason;
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}
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/// The result after searching for a build of a commit.
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class BuildSearchResult {
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final int build;
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final String commit;
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BuildSearchResult(this.build, this.commit);
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}
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/// Locates the build number of the [commit] on the [builder], or throws an
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/// exception if the builder hasn't built the commit.
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Future<BuildSearchResult> searchForBuild(String builder, String commit) async {
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final requestUrl = Uri.parse(
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"https://cr-buildbucket.appspot.com/_ah/api/buildbucket/v1/search"
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"?bucket=luci.dart.ci.sandbox"
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"&tag=builder%3A$builder"
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"&tag=buildset%3Acommit%2Fgit%2F$commit"
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"&fields=builds(status%2Ctags%2Curl)");
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final client = new HttpClient();
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final request = await client.getUrl(requestUrl);
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final response = await request.close();
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final Map<String, dynamic> object = await response
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.cast<List<int>>()
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.transform(new Utf8Decoder())
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.transform(new JsonDecoder())
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.first;
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client.close();
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final builds = object["builds"];
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if (builds == null || builds.isEmpty) {
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throw new CommitNotBuiltException(
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"Builder $builder hasn't built commit $commit");
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}
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final build = builds.last;
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final tags = (build["tags"] as List).cast<String>();
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final buildAddressTag =
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tags.firstWhere((tag) => tag.startsWith("build_address:"));
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final buildAddress = buildAddressTag.substring("build_address:".length);
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if (build["status"] != "COMPLETED") {
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throw new CommitNotBuiltException(
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"Build $buildAddress isn't completed yet");
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}
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return new BuildSearchResult(int.parse(buildAddress.split("/").last), commit);
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}
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Future<BuildSearchResult> searchForApproximateBuild(
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String builder, String commit) async {
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try {
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return await searchForBuild(builder, commit);
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} on CommitNotBuiltException catch (e) {
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print("Warning: $e, searching for an inexact previous build...");
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final int limit = 25;
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final arguments = [
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"rev-list",
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"$commit~$limit..$commit~1",
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"--first-parent",
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"--topo-order"
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];
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final processResult = await Process.run("git", arguments, runInShell: true);
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if (processResult.exitCode != 0) {
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throw new Exception("Failed to list potential commits: git $arguments\n"
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"exitCode: ${processResult.exitCode}\n"
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"stdout: ${processResult.stdout}\n"
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"stdout: ${processResult.stderr}\n");
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}
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for (final fallbackCommit in LineSplitter.split(processResult.stdout)) {
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try {
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return await searchForBuild(builder, fallbackCommit);
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} catch (e) {
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print(
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"Warning: Searching for inexact baseline build: $e, continuing...");
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}
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}
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throw new CommitNotBuiltException(
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"Failed to locate approximate baseline results for "
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"$commit in past $limit commits");
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}
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}
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void overrideConfiguration(Map<String, Map<String, dynamic>> results,
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String configuration, String newConfiguration) {
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results.forEach((String key, Map<String, dynamic> result) {
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if (result["configuration"] == configuration) {
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result["configuration"] = newConfiguration;
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}
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});
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}
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void printUsage(ArgParser parser, {String error, bool printOptions: false}) {
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if (error != null) {
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print("$error\n");
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exitCode = 1;
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}
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print("""
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Usage: test.dart -b [BUILDER] -n [CONFIGURATION] [OPTION]... [--]
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[TEST.PY OPTION]... [SELECTOR]...
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Run tests and compare with the results on the given builder. Either the -n or
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the -b option, or both, must be used. Any options following -- and non-option
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arguments will be forwarded to test.py invocations. The specified named
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configuration's results will be downloaded from the specified builder. If only a
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named configuration is specified, the results are downloaded from the
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appropriate builders. If only a builder is specified, the default named
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configuration is used if the builder only has a single named configuration.
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Otherwise the available named configurations are listed.
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See the documentation at https://goto.google.com/dart-status-file-free-workflow
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""");
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if (printOptions) {
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print(parser.usage);
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} else {
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print("Run test.dart --help to see all options.");
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}
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}
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void main(List<String> args) async {
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final parser = new ArgParser();
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parser.addOption("builder",
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abbr: "b", help: "Run tests like on the given builder");
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parser.addOption("branch",
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abbr: "B",
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help: "Select the builders building this branch",
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defaultsTo: "master");
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parser.addOption("commit", abbr: "C", help: "Compare with this commit");
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parser.addFlag("deflake",
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help: "Re-run failing newly tests $deflakingCount times.");
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parser.addFlag("report-flakes",
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help: "Report test failures for tests known to be flaky.\n"
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"This ignores all flakiness data from CI but flakes\n"
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"detected by --deflake will remain hidden");
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parser.addFlag("list-configurations",
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help: "Output list of configurations.", negatable: false);
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parser.addMultiOption("named-configuration",
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abbr: "n",
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help: "The named test configuration(s) that supplies the\nvalues for all "
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"test options, specifying how tests\nshould be run.");
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parser.addOption("local-configuration",
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abbr: "N",
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help: "Use a different named configuration for local\ntesting than the "
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"named configuration the baseline\nresults were downloaded for. The "
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"results may be\ninexact if the baseline configuration is "
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"different.");
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parser.addOption("remote",
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abbr: "R",
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help: "Compare with this remote and git branch",
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defaultsTo: "origin");
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parser.addFlag("help", help: "Show the program usage.", negatable: false);
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ArgResults options;
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try {
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options = parser.parse(args);
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} on FormatException catch (exception) {
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printUsage(parser, error: exception.message);
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return;
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}
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if (options["help"]) {
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printUsage(parser, printOptions: true);
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return;
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}
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if (options["list-configurations"]) {
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final process = await Process.start(
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"python", ["tools/test.py", "--list-configurations"],
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mode: ProcessStartMode.inheritStdio, runInShell: Platform.isWindows);
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exitCode = await process.exitCode;
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return;
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}
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final requestedBuilder = options["builder"];
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final requestedNamedConfigurations =
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(options["named-configuration"] as List).cast<String>();
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final localConfiguration = options["local-configuration"] as String;
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if (requestedBuilder == null && requestedNamedConfigurations.isEmpty) {
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printUsage(parser,
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error: "Please specify either a configuration (-n) or "
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"a builder (-b)");
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return;
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}
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if (localConfiguration != null && requestedNamedConfigurations.length > 1) {
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printUsage(parser,
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error: "Local configuration (-N) can only be used with a"
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" single named configuration (-n)");
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return;
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}
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// Locate gsutil.py.
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gsutilPy =
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Platform.script.resolve("../third_party/gsutil/gsutil.py").toFilePath();
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// Load the test matrix.
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final testMatrixPath = Platform.script.resolve("bots/test_matrix.json");
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final testMatrix = TestMatrix.fromPath(testMatrixPath.toFilePath());
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// Determine what named configuration to run and which builders to download
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// existing results from.
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final testedConfigurations = resolveNamedConfigurations(testMatrix,
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options["branch"], requestedNamedConfigurations, requestedBuilder);
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if (testedConfigurations == null) {
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// No valid configuration could be found. The error has already been
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// reported by [resolveConfigurations].
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exitCode = 1;
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return;
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}
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final namedConfigurations = testedConfigurations.keys.toSet();
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final builders =
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testedConfigurations.values.expand((builders) => builders).toSet();
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// Print information about the resolved builders to compare with.
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for (final namedConfiguration in namedConfigurations) {
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final testedBuilders = testedConfigurations[namedConfiguration];
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final onWhichBuilders = testedBuilders.length == 1
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? "builder ${testedBuilders.single.name}"
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: "builders${testedBuilders.map((b) => "\n ${b.name}").join()}";
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if (localConfiguration != null) {
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print("Testing named configuration $localConfiguration "
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"compared with configuration ${namedConfiguration} "
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"on $onWhichBuilders");
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} else {
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print("Testing named configuration $namedConfiguration "
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"compared with $onWhichBuilders");
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}
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}
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// Use given commit or find out where the current HEAD branched.
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final commit = options["commit"] ??
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await findMergeBase(options["remote"], options["branch"]);
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print("Base commit is $commit");
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// Store the downloaded results and our test results in a temporary directory.
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final outDirectory = await Directory.systemTemp.createTemp("test.dart.");
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try {
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final tasks = <Future>[];
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bool needsConfigurationOverride = localConfiguration != null &&
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localConfiguration != namedConfigurations.single;
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bool needsMerge = builders.length > 1;
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final inexactBuilds = <String, String>{};
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var previousFileName = "previous.json";
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var flakyFileName = "flaky.json";
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var downloadNumber = 0;
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// Download the previous results and flakiness info from cloud storage.
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for (final builder in builders) {
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final builderName = builder.name;
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if (needsMerge) {
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previousFileName = "previous-$downloadNumber.json";
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flakyFileName = "flaky-$downloadNumber.json";
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downloadNumber++;
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}
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print("Finding build on builder $builderName to compare with...");
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// Use the buildbucket API to search for builds of the right commit.
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final buildSearchResult =
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await searchForApproximateBuild(builderName, commit);
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if (buildSearchResult.commit != commit) {
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print("Warning: Using commit ${buildSearchResult.commit} "
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"as baseline instead of $commit for $builderName");
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inexactBuilds[builderName] = buildSearchResult.commit;
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}
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final buildNumber = buildSearchResult.build.toString();
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print("Downloading results from builder $builderName "
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"build $buildNumber...");
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tasks.add(cpGsutil(
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buildFileCloudPath(builderName, buildNumber, "results.json"),
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"${outDirectory.path}/$previousFileName"));
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if (!options["report-flakes"]) {
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tasks.add(cpGsutil(
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buildFileCloudPath(builderName, buildNumber, "flaky.json"),
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"${outDirectory.path}/$flakyFileName"));
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}
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}
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// Run the tests.
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final configurationsToRun = localConfiguration != null
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? <String>[localConfiguration]
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: namedConfigurations;
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print("".padLeft(80, "="));
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print("Running tests");
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print("".padLeft(80, "="));
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await runProcessInheritStdio(
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"python",
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[
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"tools/test.py",
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"--named-configuration=${configurationsToRun.join(",")}",
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"--output-directory=${outDirectory.path}",
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"--clean-exit",
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"--silent-failures",
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"--write-results",
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"--write-logs",
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...options.rest,
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],
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runInShell: Platform.isWindows);
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// Wait for the downloads and the test run to complete.
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await Future.wait(tasks);
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// Merge the results and flaky data downloaded from the builders.
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final mergedResults = <String, Map<String, dynamic>>{};
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final mergedFlaky = <String, Map<String, dynamic>>{};
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if (needsMerge || needsConfigurationOverride) {
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for (int i = 0; i < downloadNumber; ++i) {
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previousFileName = needsMerge ? "previous-$i.json" : "previous.json";
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var results =
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await loadResultsMap("${outDirectory.path}/$previousFileName");
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if (needsConfigurationOverride) {
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overrideConfiguration(
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results, namedConfigurations.single, localConfiguration);
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}
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mergedResults.addAll(results);
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if (!options["report-flakes"]) {
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flakyFileName = needsMerge ? "flaky-$i.json" : "flaky.json";
|
|
var flakyTests =
|
|
await loadResultsMap("${outDirectory.path}/$flakyFileName");
|
|
if (needsConfigurationOverride) {
|
|
overrideConfiguration(
|
|
flakyTests, namedConfigurations.single, localConfiguration);
|
|
}
|
|
mergedFlaky.addAll(flakyTests);
|
|
}
|
|
}
|
|
}
|
|
// Write out the merged results for the builders.
|
|
if (needsMerge || needsConfigurationOverride) {
|
|
await new File("${outDirectory.path}/previous.json").writeAsString(
|
|
mergedResults.values.map((data) => jsonEncode(data) + "\n").join(""));
|
|
}
|
|
// Ensure that there is a flaky.json even if it wasn't downloaded.
|
|
if (needsMerge || needsConfigurationOverride || options["report-flakes"]) {
|
|
await new File("${outDirectory.path}/flaky.json").writeAsString(
|
|
mergedFlaky.values.map((data) => jsonEncode(data) + "\n").join(""));
|
|
}
|
|
// Deflake results of the tests if required.
|
|
if (options["deflake"]) {
|
|
await deflake(outDirectory, configurationsToRun, options.rest);
|
|
}
|
|
// Write out the final comparison.
|
|
print("".padLeft(80, "="));
|
|
print("Test Results");
|
|
print("".padLeft(80, "="));
|
|
final compareOutput = await runProcess(Platform.resolvedExecutable, [
|
|
"tools/bots/compare_results.dart",
|
|
"--human",
|
|
"--verbose",
|
|
"--changed",
|
|
"--failing",
|
|
"--passing",
|
|
"--flakiness-data=${outDirectory.path}/flaky.json",
|
|
"--logs=${outDirectory.path}/logs.json",
|
|
"${outDirectory.path}/previous.json",
|
|
"${outDirectory.path}/results.json",
|
|
]);
|
|
if (compareOutput.stdout == "") {
|
|
print("There were no test failures.");
|
|
} else {
|
|
stdout.write(compareOutput.stdout);
|
|
}
|
|
if (inexactBuilds.isNotEmpty) {
|
|
print("");
|
|
final builders = inexactBuilds.keys.toList()..sort();
|
|
for (var builder in builders) {
|
|
final inexactCommit = inexactBuilds[builder];
|
|
print("Warning: Results may be inexact because commit ${inexactCommit} "
|
|
"was used as the baseline for $builder instead of $commit");
|
|
}
|
|
}
|
|
} finally {
|
|
await outDirectory.delete(recursive: true);
|
|
}
|
|
}
|
|
|
|
void deflake(Directory outDirectory, List<String> configurations,
|
|
List<String> testPyArgs) async {
|
|
// Find the list of tests to deflake.
|
|
final deflakeListOutput = await runProcess(Platform.resolvedExecutable, [
|
|
"tools/bots/compare_results.dart",
|
|
"--changed",
|
|
"--failing",
|
|
"--passing",
|
|
"--flakiness-data=${outDirectory.path}/flaky.json",
|
|
"${outDirectory.path}/previous.json",
|
|
"${outDirectory.path}/results.json",
|
|
]);
|
|
final deflakeListPath = "${outDirectory.path}/deflake.list";
|
|
final deflakeListFile = new File(deflakeListPath);
|
|
await deflakeListFile.writeAsString(deflakeListOutput.stdout);
|
|
|
|
// Deflake the changed tests.
|
|
final deflakingResultsPaths = <String>[];
|
|
for (int i = 1; deflakeListOutput.stdout != "" && i <= deflakingCount; i++) {
|
|
print("".padLeft(80, "="));
|
|
print("Running deflaking iteration $i");
|
|
print("".padLeft(80, "="));
|
|
final deflakeDirectory = new Directory("${outDirectory.path}/$i");
|
|
await deflakeDirectory.create();
|
|
final deflakeArguments = <String>[
|
|
"--named-configuration=${configurations.join(",")}",
|
|
"--output-directory=${deflakeDirectory.path}",
|
|
"--clean-exit",
|
|
"--silent-failures",
|
|
"--write-results",
|
|
"--test-list=$deflakeListPath",
|
|
...testPyArgs,
|
|
];
|
|
await runProcessInheritStdio(
|
|
"python", ["tools/test.py", ...deflakeArguments],
|
|
runInShell: Platform.isWindows);
|
|
deflakingResultsPaths.add("${deflakeDirectory.path}/results.json");
|
|
}
|
|
|
|
// Update the flakiness information based on what we've learned.
|
|
print("Updating flakiness information...");
|
|
await runProcess(Platform.resolvedExecutable, [
|
|
"tools/bots/update_flakiness.dart",
|
|
"--input=${outDirectory.path}/flaky.json",
|
|
"--output=${outDirectory.path}/flaky.json",
|
|
"${outDirectory.path}/results.json",
|
|
...deflakingResultsPaths,
|
|
]);
|
|
}
|