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Comments (9)

mbrodesser-Igalia avatar mbrodesser-Igalia commented on May 23, 2024

When debugging this, be aware that #44352 will prevent the above error log.

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mbrodesser-Igalia avatar mbrodesser-Igalia commented on May 23, 2024

Adding

      console.log(
        "(e.constructor === constructor)=" + (e.constructor === constructor)
      );
      console.log("(e instanceof TypeError)=" + (e instanceof TypeError));
      console.log("e.constructor.name=" + e.constructor.name);

to https://searchfox.org/mozilla-central/rev/b4860b54810539f0e4ab1fc46a3246daf2428439/testing/web-platform/tests/resources/testharness.js#2122 reveals:

 "(e.constructor === constructor)=true", source: http://web-platform.test:8000/resources/testharness.js (2408)
 "(e instanceof TypeError)=true", source: http://web-platform.test:8000/resources/testharness.js (2411)
 "e.constructor.name=TypeError", source: http://web-platform.test:8000/resources/testharness.js (2412)

 "(e.constructor === constructor)=false", source: http://web-platform.test:8000/resources/testharness.js (2408)
 "(e instanceof TypeError)=false", source: http://web-platform.test:8000/resources/testharness.js (2411)
 "e.constructor.name=TypeError", source: http://web-platform.test:8000/resources/testharness.js (2412)

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ptomato avatar ptomato commented on May 23, 2024

It may be relevant for you, test262 takes this case into account in its assert.throws() function with a specific error message: https://github.com/tc39/test262/blob/837def66ac1700ce398df4a3b4eaeea915aa1df5/harness/assert.js#L87-L94

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Ms2ger avatar Ms2ger commented on May 23, 2024

This is unsurprising, yeah. Use otherIframe.contentWindow.TypeError or something like that

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