mirror of
https://github.com/denoland/deno
synced 2024-08-27 12:00:17 +00:00
![Nathan Whitaker](/assets/img/avatar_default.png)
Fixes #22941. In that case, the only file with coverage was the `test.ts` file. The coverage reporter filters out test files before compiling its report, so after filtering we were left with an empty set of files. Later on it's assumed that there is at least 1 file to be reported on, and we panic. Instead of panicking, just issue an error after filtering.
588 lines
17 KiB
Rust
588 lines
17 KiB
Rust
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
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use crate::args::CoverageFlags;
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use crate::args::FileFlags;
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use crate::args::Flags;
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use crate::cdp;
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use crate::factory::CliFactory;
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use crate::npm::CliNpmResolver;
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use crate::tools::fmt::format_json;
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use crate::tools::test::is_supported_test_path;
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use crate::util::fs::FileCollector;
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use crate::util::text_encoding::source_map_from_code;
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use deno_ast::MediaType;
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use deno_ast::ModuleSpecifier;
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use deno_config::glob::FilePatterns;
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use deno_config::glob::PathOrPattern;
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use deno_config::glob::PathOrPatternSet;
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use deno_core::anyhow::anyhow;
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use deno_core::anyhow::Context;
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use deno_core::error::generic_error;
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use deno_core::error::AnyError;
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use deno_core::serde_json;
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use deno_core::sourcemap::SourceMap;
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use deno_core::url::Url;
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use deno_core::LocalInspectorSession;
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use deno_core::ModuleCodeString;
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use regex::Regex;
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use std::fs;
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use std::fs::File;
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use std::io::BufWriter;
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use std::io::Write;
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use std::path::Path;
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use std::path::PathBuf;
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use text_lines::TextLines;
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use uuid::Uuid;
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mod merge;
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mod range_tree;
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mod reporter;
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mod util;
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use merge::ProcessCoverage;
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pub struct CoverageCollector {
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pub dir: PathBuf,
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session: LocalInspectorSession,
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}
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#[async_trait::async_trait(?Send)]
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impl crate::worker::CoverageCollector for CoverageCollector {
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async fn start_collecting(&mut self) -> Result<(), AnyError> {
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self.enable_debugger().await?;
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self.enable_profiler().await?;
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self
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.start_precise_coverage(cdp::StartPreciseCoverageArgs {
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call_count: true,
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detailed: true,
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allow_triggered_updates: false,
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})
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.await?;
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Ok(())
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}
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async fn stop_collecting(&mut self) -> Result<(), AnyError> {
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fs::create_dir_all(&self.dir)?;
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let script_coverages = self.take_precise_coverage().await?.result;
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for script_coverage in script_coverages {
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// Filter out internal JS files from being included in coverage reports
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if script_coverage.url.starts_with("ext:")
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|| script_coverage.url.starts_with("[ext:")
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{
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continue;
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}
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let filename = format!("{}.json", Uuid::new_v4());
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let filepath = self.dir.join(filename);
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let mut out = BufWriter::new(File::create(&filepath)?);
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let coverage = serde_json::to_string(&script_coverage)?;
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let formatted_coverage =
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format_json(&filepath, &coverage, &Default::default())
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.ok()
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.flatten()
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.unwrap_or(coverage);
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out.write_all(formatted_coverage.as_bytes())?;
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out.flush()?;
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}
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self.disable_debugger().await?;
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self.disable_profiler().await?;
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Ok(())
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}
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}
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impl CoverageCollector {
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pub fn new(dir: PathBuf, session: LocalInspectorSession) -> Self {
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Self { dir, session }
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}
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async fn enable_debugger(&mut self) -> Result<(), AnyError> {
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self
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.session
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.post_message::<()>("Debugger.enable", None)
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.await?;
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Ok(())
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}
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async fn enable_profiler(&mut self) -> Result<(), AnyError> {
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self
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.session
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.post_message::<()>("Profiler.enable", None)
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.await?;
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Ok(())
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}
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async fn disable_debugger(&mut self) -> Result<(), AnyError> {
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self
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.session
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.post_message::<()>("Debugger.disable", None)
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.await?;
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Ok(())
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}
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async fn disable_profiler(&mut self) -> Result<(), AnyError> {
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self
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.session
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.post_message::<()>("Profiler.disable", None)
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.await?;
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Ok(())
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}
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async fn start_precise_coverage(
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&mut self,
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parameters: cdp::StartPreciseCoverageArgs,
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) -> Result<cdp::StartPreciseCoverageResponse, AnyError> {
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let return_value = self
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.session
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.post_message("Profiler.startPreciseCoverage", Some(parameters))
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.await?;
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let return_object = serde_json::from_value(return_value)?;
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Ok(return_object)
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}
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async fn take_precise_coverage(
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&mut self,
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) -> Result<cdp::TakePreciseCoverageResponse, AnyError> {
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let return_value = self
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.session
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.post_message::<()>("Profiler.takePreciseCoverage", None)
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.await?;
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let return_object = serde_json::from_value(return_value)?;
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Ok(return_object)
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}
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}
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#[derive(Debug, Clone)]
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struct BranchCoverageItem {
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line_index: usize,
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block_number: usize,
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branch_number: usize,
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taken: Option<i64>,
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is_hit: bool,
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}
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#[derive(Debug, Clone)]
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struct FunctionCoverageItem {
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name: String,
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line_index: usize,
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execution_count: i64,
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}
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#[derive(Debug, Clone)]
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pub struct CoverageReport {
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url: ModuleSpecifier,
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named_functions: Vec<FunctionCoverageItem>,
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branches: Vec<BranchCoverageItem>,
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/// (line_index, number_of_hits)
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found_lines: Vec<(usize, i64)>,
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output: Option<PathBuf>,
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}
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fn generate_coverage_report(
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script_coverage: &cdp::ScriptCoverage,
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script_source: String,
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maybe_source_map: &Option<Vec<u8>>,
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output: &Option<PathBuf>,
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) -> CoverageReport {
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let maybe_source_map = maybe_source_map
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.as_ref()
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.map(|source_map| SourceMap::from_slice(source_map).unwrap());
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let text_lines = TextLines::new(&script_source);
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let comment_ranges = deno_ast::lex(&script_source, MediaType::JavaScript)
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.into_iter()
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.filter(|item| {
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matches!(item.inner, deno_ast::TokenOrComment::Comment { .. })
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})
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.map(|item| item.range)
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.collect::<Vec<_>>();
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let url = Url::parse(&script_coverage.url).unwrap();
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let mut coverage_report = CoverageReport {
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url,
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named_functions: Vec::with_capacity(
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script_coverage
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.functions
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.iter()
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.filter(|f| !f.function_name.is_empty())
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.count(),
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),
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branches: Vec::new(),
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found_lines: Vec::new(),
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output: output.clone(),
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};
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for function in &script_coverage.functions {
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if function.function_name.is_empty() {
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continue;
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}
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let line_index = range_to_src_line_index(
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&function.ranges[0],
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&text_lines,
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&maybe_source_map,
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);
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coverage_report.named_functions.push(FunctionCoverageItem {
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name: function.function_name.clone(),
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line_index,
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execution_count: function.ranges[0].count,
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});
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}
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for (block_number, function) in script_coverage.functions.iter().enumerate() {
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let block_hits = function.ranges[0].count;
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for (branch_number, range) in function.ranges[1..].iter().enumerate() {
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let line_index =
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range_to_src_line_index(range, &text_lines, &maybe_source_map);
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// From https://manpages.debian.org/unstable/lcov/geninfo.1.en.html:
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//
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// Block number and branch number are gcc internal IDs for the branch. Taken is either '-'
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// if the basic block containing the branch was never executed or a number indicating how
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// often that branch was taken.
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//
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// However with the data we get from v8 coverage profiles it seems we can't actually hit
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// this as appears it won't consider any nested branches it hasn't seen but its here for
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// the sake of accuracy.
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let taken = if block_hits > 0 {
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Some(range.count)
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} else {
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None
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};
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coverage_report.branches.push(BranchCoverageItem {
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line_index,
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block_number,
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branch_number,
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taken,
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is_hit: range.count > 0,
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})
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}
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}
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// TODO(caspervonb): collect uncovered ranges on the lines so that we can highlight specific
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// parts of a line in color (word diff style) instead of the entire line.
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let mut line_counts = Vec::with_capacity(text_lines.lines_count());
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for line_index in 0..text_lines.lines_count() {
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let line_start_byte_offset = text_lines.line_start(line_index);
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let line_start_char_offset = text_lines.char_index(line_start_byte_offset);
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let line_end_byte_offset = text_lines.line_end(line_index);
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let line_end_char_offset = text_lines.char_index(line_end_byte_offset);
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let ignore = comment_ranges.iter().any(|range| {
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range.start <= line_start_byte_offset && range.end >= line_end_byte_offset
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}) || script_source
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[line_start_byte_offset..line_end_byte_offset]
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.trim()
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.is_empty();
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let mut count = 0;
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if ignore {
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count = 1;
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} else {
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// Count the hits of ranges that include the entire line which will always be at-least one
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// as long as the code has been evaluated.
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for function in &script_coverage.functions {
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for range in &function.ranges {
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if range.start_char_offset <= line_start_char_offset
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&& range.end_char_offset >= line_end_char_offset
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{
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count += range.count;
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}
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}
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}
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// We reset the count if any block with a zero count overlaps with the line range.
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for function in &script_coverage.functions {
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for range in &function.ranges {
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if range.count > 0 {
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continue;
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}
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let overlaps = range.start_char_offset < line_end_char_offset
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&& range.end_char_offset > line_start_char_offset;
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if overlaps {
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count = 0;
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}
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}
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}
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}
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line_counts.push(count);
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}
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coverage_report.found_lines =
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if let Some(source_map) = maybe_source_map.as_ref() {
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let mut found_lines = line_counts
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.iter()
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.enumerate()
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.flat_map(|(index, count)| {
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// get all the mappings from this destination line to a different src line
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let mut results = source_map
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.tokens()
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.filter(move |token| token.get_dst_line() as usize == index)
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.map(move |token| (token.get_src_line() as usize, *count))
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.collect::<Vec<_>>();
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// only keep the results that point at different src lines
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results.sort_unstable_by_key(|(index, _)| *index);
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results.dedup_by_key(|(index, _)| *index);
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results.into_iter()
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})
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.collect::<Vec<(usize, i64)>>();
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found_lines.sort_unstable_by_key(|(index, _)| *index);
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// combine duplicated lines
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for i in (1..found_lines.len()).rev() {
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if found_lines[i].0 == found_lines[i - 1].0 {
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found_lines[i - 1].1 += found_lines[i].1;
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found_lines.remove(i);
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}
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}
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found_lines
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} else {
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line_counts
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.into_iter()
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.enumerate()
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.collect::<Vec<(usize, i64)>>()
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};
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coverage_report
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}
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fn range_to_src_line_index(
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range: &cdp::CoverageRange,
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text_lines: &TextLines,
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maybe_source_map: &Option<SourceMap>,
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) -> usize {
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let source_lc = text_lines.line_and_column_index(
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text_lines.byte_index_from_char_index(range.start_char_offset),
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);
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if let Some(source_map) = maybe_source_map.as_ref() {
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source_map
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.lookup_token(source_lc.line_index as u32, source_lc.column_index as u32)
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.map(|token| token.get_src_line() as usize)
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.unwrap_or(0)
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} else {
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source_lc.line_index
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}
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}
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fn collect_coverages(
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files: FileFlags,
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initial_cwd: &Path,
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) -> Result<Vec<cdp::ScriptCoverage>, AnyError> {
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let mut coverages: Vec<cdp::ScriptCoverage> = Vec::new();
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let file_patterns = FilePatterns {
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base: initial_cwd.to_path_buf(),
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include: Some({
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if files.include.is_empty() {
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PathOrPatternSet::new(vec![PathOrPattern::Path(
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initial_cwd.to_path_buf(),
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)])
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} else {
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PathOrPatternSet::from_include_relative_path_or_patterns(
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initial_cwd,
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&files.include,
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)?
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}
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}),
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exclude: PathOrPatternSet::from_exclude_relative_path_or_patterns(
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initial_cwd,
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&files.ignore,
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)
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.context("Invalid ignore pattern.")?,
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};
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let file_paths = FileCollector::new(|e| {
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e.path.extension().map(|ext| ext == "json").unwrap_or(false)
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})
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.ignore_git_folder()
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.ignore_node_modules()
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.ignore_vendor_folder()
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.collect_file_patterns(file_patterns)?;
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for file_path in file_paths {
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let new_coverage = fs::read_to_string(file_path.as_path())
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.map_err(AnyError::from)
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.and_then(|json| serde_json::from_str(&json).map_err(AnyError::from))
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.with_context(|| format!("Failed reading '{}'", file_path.display()))?;
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coverages.push(new_coverage);
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}
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coverages.sort_by_key(|k| k.url.clone());
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Ok(coverages)
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}
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fn filter_coverages(
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coverages: Vec<cdp::ScriptCoverage>,
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include: Vec<String>,
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exclude: Vec<String>,
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npm_resolver: &dyn CliNpmResolver,
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) -> Vec<cdp::ScriptCoverage> {
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let include: Vec<Regex> =
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include.iter().map(|e| Regex::new(e).unwrap()).collect();
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let exclude: Vec<Regex> =
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exclude.iter().map(|e| Regex::new(e).unwrap()).collect();
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coverages
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.into_iter()
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.filter(|e| {
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let is_internal = e.url.starts_with("ext:")
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|| e.url.ends_with("__anonymous__")
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|| e.url.ends_with("$deno$test.js")
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|| e.url.ends_with(".snap")
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|| is_supported_test_path(Path::new(e.url.as_str()))
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|| Url::parse(&e.url)
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.ok()
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.map(|url| npm_resolver.in_npm_package(&url))
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.unwrap_or(false);
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let is_included = include.iter().any(|p| p.is_match(&e.url));
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let is_excluded = exclude.iter().any(|p| p.is_match(&e.url));
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(include.is_empty() || is_included) && !is_excluded && !is_internal
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})
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.collect::<Vec<cdp::ScriptCoverage>>()
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}
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pub async fn cover_files(
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flags: Flags,
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coverage_flags: CoverageFlags,
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) -> Result<(), AnyError> {
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if coverage_flags.files.include.is_empty() {
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return Err(generic_error("No matching coverage profiles found"));
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}
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let factory = CliFactory::from_flags(flags)?;
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let npm_resolver = factory.npm_resolver().await?;
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let file_fetcher = factory.file_fetcher()?;
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let cli_options = factory.cli_options();
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let emitter = factory.emitter()?;
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assert!(!coverage_flags.files.include.is_empty());
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// Use the first include path as the default output path.
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let coverage_root = cli_options
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.initial_cwd()
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.join(&coverage_flags.files.include[0]);
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let script_coverages =
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collect_coverages(coverage_flags.files, cli_options.initial_cwd())?;
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if script_coverages.is_empty() {
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return Err(generic_error("No coverage files found"));
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}
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let script_coverages = filter_coverages(
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script_coverages,
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coverage_flags.include,
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coverage_flags.exclude,
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npm_resolver.as_ref(),
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);
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if script_coverages.is_empty() {
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return Err(generic_error("No covered files included in the report"));
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}
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let proc_coverages: Vec<_> = script_coverages
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.into_iter()
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.map(|cov| ProcessCoverage { result: vec![cov] })
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.collect();
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let script_coverages = if let Some(c) = merge::merge_processes(proc_coverages)
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{
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c.result
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} else {
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vec![]
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};
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|
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let mut reporter = reporter::create(coverage_flags.r#type);
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let out_mode = match coverage_flags.output {
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Some(ref path) => match File::create(path) {
|
|
Ok(_) => Some(PathBuf::from(path)),
|
|
Err(e) => {
|
|
return Err(anyhow!("Failed to create output file: {}", e));
|
|
}
|
|
},
|
|
None => None,
|
|
};
|
|
|
|
for script_coverage in script_coverages {
|
|
let module_specifier = deno_core::resolve_url_or_path(
|
|
&script_coverage.url,
|
|
cli_options.initial_cwd(),
|
|
)?;
|
|
|
|
let maybe_file = if module_specifier.scheme() == "file" {
|
|
file_fetcher.get_source(&module_specifier)
|
|
} else {
|
|
file_fetcher
|
|
.fetch_cached(&module_specifier, None, 10)
|
|
.with_context(|| {
|
|
format!("Failed to fetch \"{module_specifier}\" from cache.")
|
|
})?
|
|
};
|
|
let file = maybe_file.ok_or_else(|| {
|
|
anyhow!("Failed to fetch \"{}\" from cache.
|
|
Before generating coverage report, run `deno test --coverage` to ensure consistent state.",
|
|
module_specifier
|
|
)
|
|
})?.into_text_decoded()?;
|
|
|
|
let original_source = file.source.clone();
|
|
// Check if file was transpiled
|
|
let transpiled_code = match file.media_type {
|
|
MediaType::JavaScript
|
|
| MediaType::Unknown
|
|
| MediaType::Cjs
|
|
| MediaType::Mjs
|
|
| MediaType::Json => None,
|
|
MediaType::Dts | MediaType::Dmts | MediaType::Dcts => Some(String::new()),
|
|
MediaType::TypeScript
|
|
| MediaType::Jsx
|
|
| MediaType::Mts
|
|
| MediaType::Cts
|
|
| MediaType::Tsx => {
|
|
Some(match emitter.maybe_cached_emit(&file.specifier, &file.source) {
|
|
Some(code) => code,
|
|
None => {
|
|
return Err(anyhow!(
|
|
"Missing transpiled source code for: \"{}\".
|
|
Before generating coverage report, run `deno test --coverage` to ensure consistent state.",
|
|
file.specifier,
|
|
))
|
|
}
|
|
})
|
|
}
|
|
MediaType::Wasm | MediaType::TsBuildInfo | MediaType::SourceMap => {
|
|
unreachable!()
|
|
}
|
|
};
|
|
let runtime_code: ModuleCodeString = transpiled_code
|
|
.map(|c| c.into())
|
|
.unwrap_or_else(|| original_source.clone().into());
|
|
|
|
let source_map = source_map_from_code(&runtime_code);
|
|
let coverage_report = generate_coverage_report(
|
|
&script_coverage,
|
|
runtime_code.as_str().to_owned(),
|
|
&source_map,
|
|
&out_mode,
|
|
);
|
|
|
|
if !coverage_report.found_lines.is_empty() {
|
|
reporter.report(&coverage_report, &original_source)?;
|
|
}
|
|
}
|
|
|
|
reporter.done(&coverage_root);
|
|
|
|
Ok(())
|
|
}
|