Harness tests for asyncHelpers.js' assert.throwsAsync function

test/harness/asyncHelpers-throwsAsync-custom-typeerror.js

@@ -0,0 +1,72 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Thenables that reject with instances of the specified constructor function
+    satisfy the assertion, without collision with error constructors of the same name.
+flags: [async]
+includes: [asyncHelpers.js]
+---*/
+
+var intrinsicTypeError = TypeError;
+
+(async function () {
+  function TypeError() {}
+  var caught = false;
+
+  var p = assert.throwsAsync(
+    TypeError,
+    async function () {
+      throw new TypeError();
+    },
+    "Throws an instance of the matching custom TypeError"
+  );
+  assert(p instanceof Promise);
+  await p;
+
+  p = assert.throwsAsync(intrinsicTypeError, async function () {
+    throw new TypeError();
+  });
+  assert(p instanceof Promise);
+  try {
+    await p;
+  } catch (err) {
+    caught = true;
+    assert.sameValue(
+      err.constructor,
+      Test262Error,
+      "Expected a Test262Error, but a '" +
+        err.constructor.name +
+        "' was thrown."
+    );
+  } finally {
+    assert(
+      caught,
+      "assert.throwsAsync did not reject a collision of constructor names"
+    );
+  }
+
+  caught = false;
+
+  p = assert.throwsAsync(TypeError, async function () {
+    throw new intrinsicTypeError();
+  });
+  assert(p instanceof Promise);
+  try {
+    await p;
+  } catch (err) {
+    caught = true;
+    assert.sameValue(
+      err.constructor,
+      Test262Error,
+      "Expected a Test262Error, but a '" +
+        err.constructor.name +
+        "' was thrown."
+    );
+  } finally {
+    assert(
+      caught,
+      "assert.throwsAsync did not reject a collision of constructor names"
+    );
+  }
+})().then($DONE, $DONE);

test/harness/asyncHelpers-throwsAsync-custom.js

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+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Thenables that reject with values of the specified constructor function
+    satisfy the assertion.
+flags: [async]
+includes: [asyncHelpers.js]
+---*/
+
+function MyError() {}
+
+(async function () {
+  const p = assert.throwsAsync(MyError, Promise.reject(new MyError()));
+  assert(p instanceof Promise);
+  await p;
+})().then($DONE, $DONE);

test/harness/asyncHelpers-throwsAsync-funcOrThenable-throws-sync.js

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+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    assert.throwsAsync returns a promise that rejects if funcOrThenable or the inner thenable synchronously throws.
+flags: [async]
+includes: [asyncHelpers.js]
+---*/
+
+async function checkRejects(funcOrThenable) {
+  var caught = false;
+  const p = assert.throwsAsync(Test262Error, funcOrThenable);
+  assert(p instanceof Promise, "assert.throwsAsync should return a promise");
+  try {
+    await p;
+  } catch (e) {
+    caught = true;
+    assert.sameValue(
+      e.constructor,
+      Test262Error,
+      "throwsAsync should reject improper funcOrThenable with a Test262Error"
+    );
+  } finally {
+    assert(
+      caught,
+      "assert.throwsAsync did not reject improper funcOrThenable " +
+        funcOrThenable
+    );
+  }
+}
+
+(async function () {
+  await checkRejects(function () {
+    throw new Error();
+  });
+  await checkRejects(function () {
+    throw new Test262Error();
+  });
+  await checkRejects({
+    then: function () {
+      throw new Error();
+    },
+  });
+  await checkRejects({
+    then: function () {
+      throw new Test262Error();
+    },
+  });
+  await checkRejects(function () {
+    return {
+      then: function () {
+        throw new Error();
+      },
+    };
+  });
+  await checkRejects(function () {
+    return {
+      then: function () {
+        throw new Test262Error();
+      },
+    };
+  });
+})().then($DONE, $DONE);

test/harness/asyncHelpers-throwsAsync-incorrect-ctor.js

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+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Thenables that reject with values whose constructor does not match the specified
+    constructor do not satisfy the assertion.
+flags: [async]
+includes: [asyncHelpers.js]
+---*/
+
+(async function () {
+  var caught = false;
+
+  const p = assert.throwsAsync(Error, Promise.reject(new TypeError()));
+  assert(p instanceof Promise);
+  try {
+    await p;
+  } catch (err) {
+    caught = true;
+    assert.sameValue(
+      err.constructor,
+      Test262Error,
+      "Expected a Test262Error, but a '" +
+        err.constructor.name +
+        "' was thrown."
+    );
+  } finally {
+    assert(
+      caught,
+      "assert.throwsAsync did not reject when a value with incorrect constructor was thrown"
+    );
+  }
+})().then($DONE, $DONE);

test/harness/asyncHelpers-throwsAsync-invalid-funcOrThenable.js

@@ -0,0 +1,71 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    assert.throwsAsync returns a promise that rejects if funcOrThenable is not a function returning a thenable or a thenable.
+flags: [async]
+includes: [asyncHelpers.js]
+---*/
+
+async function checkRejects(funcOrThenable) {
+  var caught = false;
+  const p = assert.throwsAsync(Test262Error, funcOrThenable);
+  assert(p instanceof Promise, "assert.throwsAsync should return a promise");
+  try {
+    await p;
+  } catch (e) {
+    caught = true;
+    assert.sameValue(
+      e.constructor,
+      Test262Error,
+      "throwsAsync should reject improper funcOrThenable with a Test262Error"
+    );
+  } finally {
+    assert(
+      caught,
+      "assert.throwsAsync did not reject improper funcOrThenable " +
+        funcOrThenable
+    );
+  }
+}
+
+(async function () {
+  await checkRejects(null);
+  await checkRejects({});
+  await checkRejects("string");
+  await checkRejects(10);
+  await checkRejects();
+  await checkRejects({ then: null });
+  await checkRejects({ then: {} });
+  await checkRejects({ then: "string" });
+  await checkRejects({ then: 10 });
+  await checkRejects({ then: undefined });
+  await checkRejects(function () {
+    return null;
+  });
+  await checkRejects(function () {
+    return {};
+  });
+  await checkRejects(function () {
+    return "string";
+  });
+  await checkRejects(function () {
+    return 10;
+  });
+  await checkRejects(function () {});
+  await checkRejects(function () {
+    return { then: null };
+  });
+  await checkRejects(function () {
+    return { then: {} };
+  });
+  await checkRejects(function () {
+    return { then: "string" };
+  });
+  await checkRejects(function () {
+    return { then: 10 };
+  });
+  await checkRejects(function () {
+    return { then: undefined };
+  });
+})().then($DONE, $DONE);

test/harness/asyncHelpers-throwsAsync-native.js

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+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Thenables that reject with instances of the specified native Error constructor
+    satisfy the assertion.
+flags: [async]
+includes: [asyncHelpers.js]
+---*/
+
+(async function () {
+  var p = assert.throwsAsync(Error, async function () {
+    throw new Error();
+  });
+  assert(p instanceof Promise);
+  await p;
+  p = assert.throwsAsync(EvalError, async function () {
+    throw new EvalError();
+  });
+  assert(p instanceof Promise);
+  await p;
+  p = assert.throwsAsync(RangeError, async function () {
+    throw new RangeError();
+  });
+  assert(p instanceof Promise);
+  await p;
+  p = assert.throwsAsync(ReferenceError, async function () {
+    throw new ReferenceError();
+  });
+  assert(p instanceof Promise);
+  await p;
+  p = assert.throwsAsync(SyntaxError, async function () {
+    throw new SyntaxError();
+  });
+  assert(p instanceof Promise);
+  await p;
+  p = assert.throwsAsync(TypeError, async function () {
+    throw new TypeError();
+  });
+  assert(p instanceof Promise);
+  await p;
+  p = assert.throwsAsync(URIError, async function () {
+    throw new URIError();
+  });
+  assert(p instanceof Promise);
+  await p;
+})().then($DONE, $DONE);

test/harness/asyncHelpers-throwsAsync-no-arg.js

@@ -0,0 +1,32 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    The assertion fails when invoked without arguments.
+flags: [async]
+includes: [asyncHelpers.js]
+---*/
+
+(async function () {
+  var caught = false;
+
+  const p = assert.throwsAsync();
+  assert(p instanceof Promise);
+  try {
+    await p;
+  } catch (err) {
+    caught = true;
+    assert.sameValue(
+      err.constructor,
+      Test262Error,
+      "Expected a Test262Error, but a '" +
+        err.constructor.name +
+        "' was thrown."
+    );
+  } finally {
+    assert(
+      caught,
+      "assert.throwsAsync did not reject when invoked without arguments"
+    );
+  }
+})().then($DONE, $DONE);

test/harness/asyncHelpers-throwsAsync-no-error.js

@@ -0,0 +1,32 @@
+// Copyright (C) 2022 Igalia, S.L. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+description: |
+    Thenables that do not reject do not satisfy the assertion.
+flags: [async]
+includes: [asyncHelpers.js]
+---*/
+
+(async function () {
+  var caught = false;
+
+  const p = assert.throwsAsync(Error, async function () {});
+  assert(p instanceof Promise);
+  try {
+    await p;
+  } catch (err) {
+    caught = true;
+    assert.sameValue(
+      err.constructor,
+      Test262Error,
+      "Expected a Test262Error, but a '" +
+        err.constructor.name +
+        "' was thrown."
+    );
+  } finally {
+    assert(
+      caught,
+      "assert.throwsAsync did not reject when the thenable did not reject"
+    );
+  }
+})().then($DONE, $DONE);