feat(test): expect.getState() + improved test.each support

[otgerrogla]

What does this PR do?

Includes the following additions to the testing:

1. Support for parametrization of test.each / describe.each labels / test names
   • Related issues:
     • Fixes [bun-test] $variable does not work in describe.each #5752
     • Fixes Implement $var interpolation in test.each #6306
     • Fixes Test Title for test.each(table)('label', () => {}) :: label not working as in jest **$variable** #9323
   • Example usage:

   test.each([  ['a', 'b']  ])("Test: %s %s")  //--> "Test: a b"
   test.each([  { nested: { value: 1 } }  ])("Test: $nested.value")  //--> "Test: 1"

2. Support for tagged template string table syntax for test.each:
   • Closes Support parameterized test.each with backticks #6364
   • Example:

   describe.each`
   a    | b    | expected
   ${1} | ${1} | ${2}
   ${1} | ${2} | ${3}
   ${2} | ${1} | ${3}
   `('$a + $b', ({a, b, expected}) => { ... });

3. Support expect.getState(), although not all fields:
   • Implements Support expect.getState() #6213 (partially)
   • Currently supported fields:
     • getState().currentTestName
     • getState().testPath
     • getState().assertionCalls
     • getState().expectedAssertionsNumber
     • getState().isExpectingAssertions
     • getState().expand
4. Add support for expand flag to the bun test CLI, no built-in matchers use it yet, but it can be used by custom matchers defined with expect.extend() by looking at this.expand
5. Basic support for this.diff(a, b) in custom matchers

• Documentation or TypeScript types (it's okay to leave the rest blank in this case)
• Code changes

How did you verify your code works?

Includes tests for parametrized test names, template string literal each syntax, and getState().

• I checked the lifetime of memory allocated to verify it's (1) freed and (2) only freed when it should be
• I included a test for the new code, or an existing test covers it
• JSValue used outside outside of the stack is either wrapped in a JSC.Strong or is JSValueProtect'ed
• I wrote TypeScript/JavaScript tests and they pass locally (bun-debug test test-file-name.test)
• I added TypeScript types for the new methods, getters, or setters

[github-actions]

❌ @dylan-conway, your commit has failing tests :(

💪 2 failing tests Darwin AARCH64

• test/cli/test/bun-test.test.ts 2 failing
• test/js/web/streams/streams.test.js 1 failing

💻 2 failing tests Darwin x64 baseline

• test/cli/test/bun-test.test.ts 2 failing
• test/js/web/workers/worker.test.ts 1 failing

💻 4 failing tests Darwin x64

• test/cli/install/bun-create.test.ts 1 failing
• test/cli/test/bun-test.test.ts 2 failing
• test/js/node/tls/node-tls-context.test.ts 1 failing
• test/js/web/fetch/fetch.tls.test.ts 1 failing

🐧💪 1 failing tests Linux AARCH64

• test/cli/test/bun-test.test.ts 2 failing

🐧🖥 1 failing tests Linux x64 baseline

• test/cli/test/bun-test.test.ts 2 failing

🐧🖥 2 failing tests Linux x64

• test/cli/test/bun-test.test.ts 2 failing
• test/js/node/child_process/child_process-node.test.js 1 failing

🪟💻 12 failing tests Windows x64 baseline

• test/cli/install/bunx.test.ts 1 failing
• test/cli/install/registry/bun-install-registry.test.ts 1 failing
• test/cli/test/bun-test.test.ts 2 failing
• test/integration/next-pages/test/dev-server-ssr-100.test.ts 1 failing
• test/integration/next-pages/test/dev-server.test.ts 1 failing
• test/integration/next-pages/test/next-build.test.ts 1 failing
• test/js/bun/test/test-test.test.ts 1 failing
• test/js/node/child_process/child_process.test.ts 1 failing
• test/js/node/process/process.test.js 2 failing
• test/js/node/tls/node-tls-context.test.ts code 1
• test/js/node/watch/fs.watchFile.test.ts SIGKILL
• test/js/web/fetch/fetch.tls.test.ts 1 failing

🪟💻 7 failing tests Windows x64

• test/cli/install/bunx.test.ts 1 failing
• test/cli/install/registry/bun-install-registry.test.ts 1 failing
• test/cli/test/bun-test.test.ts 2 failing
• test/js/bun/test/test-test.test.ts 1 failing
• test/js/node/process/process.test.js 2 failing
• test/js/node/tls/node-tls-context.test.ts code 1
• test/js/node/watch/fs.watchFile.test.ts 3 failing

View logs

[Jarred-Sumner]

Closing due to bitrot