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expect
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tests 03a9b89ffb rename start_eip to eip_offset_in_page and consistently mask off upper bits hai 2 meses
readme.md 73614108b7 Clarify that expect test uses flat binaries %!s(int64=4) %!d(string=hai) anos
run.js c6ef3c4c68 cache state flags %!s(int64=2) %!d(string=hai) anos

readme.md

Expect tests

These so-called "expect tests" test the code generation, i.e. the translation of x86 assembly to Web Assembly. Use the following workflow:

  1. Hack on the code generator
  2. Run make expect-tests
  3. For each failing test:
    • Manually verify that the generated code changes are as expected by the diff
    • If so, accept the new code by copying the .actual.wast file over the .wast file and checking the new .wast file into git

In order to add a new expect test:

  1. Create a new .asm file in tests/
  2. Run make expect-tests
  3. Verify the generated code and use the printed cp command to accept the test

Note that .asm files are translated to flat binaries, not elf files, so a .data section may be meaningless.

For more information, see https://blog.janestreet.com/testing-with-expectations/