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assert: provide extra context in case of failed error validation checks #28263

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assert: provide extra context in case of failed error validation checks #28263

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75e5ba1
assert: improve class instance errors
BridgeAR Jun 13, 2019
f90cfca
assert: fix generatedMessage property
BridgeAR Jun 14, 2019
4d29fd1
assert: wrap validation function errors
BridgeAR Jun 14, 2019
1563d9d
assert: DRY .throws code
BridgeAR Jun 14, 2019
9d7d103
assert: add more information to AssertionErrors
BridgeAR Jun 15, 2019
adb44d3
assert: special handle identical error names in instance checks
BridgeAR Jun 15, 2019
e096890
doc: update assert.throws() examples
BridgeAR Jun 17, 2019
fa0f3f1
doc: update assert.throws example
BridgeAR Jun 17, 2019
683e311
doc: make `AssertionError` a link
BridgeAR Jun 20, 2019
9832d3d
fixup: doc: update assert.throws example
BridgeAR Jun 20, 2019
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doc: update assert.throws() examples 
This updates two outdated examples to the current implementation.
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@BridgeAR
BridgeAR committed Jun 17, 2019
commit e096890e434928117674d9d4be572527fec083d8
15 changes: 9 additions & 6 deletions doc/api/assert.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1171,10 +1171,15 @@ assert.throws(
assert.throws(
() => {
const otherErr = new Error('Not found');
otherErr.code = 404;
// Copy all enumerable properties from `err` to `otherErr`.
for (const [key, value] of Object.entries(err)) {
otherErr[key] = value;
}
throw otherErr;
},
err // This tests for `message`, `name` and `code`.
// The errors `message` and `name` properties will also be checked when using
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// an error as validation object.
err
);
```

Expand Down Expand Up @@ -1258,11 +1263,9 @@ assert.throws(notThrowing, 'Second');
// It does not throw because the error messages match.
assert.throws(throwingSecond, /Second$/);

// If the error message does not match, the error from within the function is
// not caught.
// If the error message does not match, an AssertionError is thrown.
assert.throws(throwingFirst, /Second$/);
// Error: First
// at throwingFirst (repl:2:9)
// AssertionError [ERR_ASSERTION]
```

Due to the confusing notation, it is recommended not to use a string as the
Expand Down