45 lines
1.5 KiB
Markdown
45 lines
1.5 KiB
Markdown
# Compiler Test Documentation
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In the Rust project, we use a special set of commands embedded in
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comments to test the Rust compiler. There are two groups of commands:
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1. Header commands
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2. Error info commands
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Both types of commands are inside comments, but header commands should
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be in a comment before any code.
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## Summary of Error Info Commands
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Error commands specify something about certain lines of the
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program. They tell the test what kind of error and what message you
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are expecting.
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* `~`: Associates the following error level and message with the
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current line
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* `~|`: Associates the following error level and message with the same
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line as the previous comment
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* `~^`: Associates the following error level and message with the
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previous line. Each caret (`^`) that you add adds a line to this, so
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`~^^^^^^^` is seven lines up.
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The error levels that you can have are:
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1. `ERROR`
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2. `WARNING`
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3. `NOTE`
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4. `HELP` and `SUGGESTION`*
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\* **Note**: `SUGGESTION` must follow immediately after `HELP`.
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## Summary of Header Commands
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Header commands specify something about the entire test file as a
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whole, instead of just a few lines inside the test.
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* `ignore-X` where `X` is an architecture, OS or stage will ignore the test accordingly
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* `ignore-pretty` will not compile the pretty-printed test (this is done to test the pretty-printer, but might not always work)
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* `ignore-test` always ignores the test
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* `ignore-lldb` and `ignore-gdb` will skip the debuginfo tests
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* `min-{gdb,lldb}-version`
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