dart-sdk/pkg/front_end/testcases

Overview

The testcases in this directory and its subdirectory are all compiled in various different configurations designed to test various aspects of Fasta (or more generally, package:front_end).

The configurations are described below.

The source of truth for these configurations is the file pkg/front_end/testing.json.

Dart 1.0 Compilation

• Status file: legacy.status
• Standalone test: pkg/front_end/test/fasta/legacy_test.dart
• Expectation prefix: .direct.expect
• How to update expectations:

./pkg/front_end/tool/fasta testing -DupdateExpectations=true compile/test1 compile/test2 ...

Dart 1.0 Outlines

• Status file: outline.status
• Standalone test: pkg/front_end/test/fasta/outline_test.dart
• Expectation prefix: .outline.expect
• How to update expectations:

./pkg/front_end/tool/fasta testing -DupdateExpectations=true outline/test1 outline/test2 ...

Dart 2.0 (strong mode)

• Status file: strong.status
• Standalone test: pkg/front_end/test/fasta/strong_test.dart
• Expectation prefix: .strong.expect
• How to update expectations:

./pkg/front_end/tool/fasta testing -DupdateExpectations=true -DupdateComments=true strong/test1 strong/test2 ...

Note: strong mode configuration additionally parses comments in the test file and can precisely match internal details of the compiler such as the inferred type of an expression or if a warning was emitted at a given location.