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Clearer messages for Node assert errors #8792

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merged 2 commits into from Aug 10, 2019
Merged

Clearer messages for Node assert errors #8792

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be3c4a1
Clearer messages for Node assert errors
Zalathar Aug 7, 2019
43304af
Merge branch 'master' into clearer-node-assert-errors
SimenB Aug 10, 2019
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -22,6 +22,7 @@
- `[jest-runtime, @jest/fake-timers]` Add `jest.advanceTimersToNextTimer` ([#8713](https://github.com/facebook/jest/pull/8713))
- `[@jest-transform]` Extract transforming require logic within `jest-core` into `@jest-transform` ([#8756](https://github.com/facebook/jest/pull/8756))
- `[jest-matcher-utils]` Add color options to `matcherHint` ([#8795](https://github.com/facebook/jest/pull/8795))
- `[jest-circus/jest-jasmine2]` Give clearer output for Node assert errors ([#8792](https://github.com/facebook/jest/pull/8792))

### Fixes

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12 changes: 6 additions & 6 deletions e2e/__tests__/__snapshots__/failures.test.ts.snap
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Expand Up @@ -399,7 +399,7 @@ FAIL __tests__/assertionError.test.js
● assert
assert.equal(received, expected) or assert(received)
assert(received)
Expected value to be equal to:
true
Expand All @@ -418,7 +418,7 @@ FAIL __tests__/assertionError.test.js
● assert with a message
assert.equal(received, expected) or assert(received)
assert(received)
Expected value to be equal to:
true
Expand All @@ -440,7 +440,7 @@ FAIL __tests__/assertionError.test.js
● assert.ok
assert.equal(received, expected) or assert(received)
assert(received)
Expected value to be equal to:
true
Expand All @@ -459,7 +459,7 @@ FAIL __tests__/assertionError.test.js
● assert.ok with a message
assert.equal(received, expected) or assert(received)
assert(received)
Expected value to be equal to:
true
Expand All @@ -481,7 +481,7 @@ FAIL __tests__/assertionError.test.js
● assert.equal
assert.equal(received, expected) or assert(received)
assert.equal(received, expected)
Expected value to be equal to:
2
Expand Down Expand Up @@ -747,7 +747,7 @@ FAIL __tests__/assertionError.test.js
● async
assert.equal(received, expected) or assert(received)
assert.equal(received, expected)
Expected value to be equal to:
"hello"
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20 changes: 9 additions & 11 deletions packages/jest-circus/src/formatNodeAssertErrors.ts
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Expand Up @@ -101,10 +101,17 @@ const assertThrowingMatcherHint = (operatorName: string) =>
const assertMatcherHint = (
operator: string | undefined | null,
operatorName: string,
expected: unknown,
) => {
let message = '';

if (operatorName) {
if (operator === '==' && expected === true) {
message =
chalk.dim('assert') +
chalk.dim('(') +
chalk.red('received') +
chalk.dim(')');
} else if (operatorName) {
message =
chalk.dim('assert') +
chalk.dim('.' + operatorName + '(') +
Expand All @@ -114,15 +121,6 @@ const assertMatcherHint = (
chalk.dim(')');
}

if (operator === '==') {
message +=
' or ' +
chalk.dim('assert') +
chalk.dim('(') +
chalk.red('received') +
chalk.dim(') ');
}

return message;
};

Expand Down Expand Up @@ -160,7 +158,7 @@ function assertionErrorMessage(
}

return (
buildHintString(assertMatcherHint(operator, operatorName)) +
buildHintString(assertMatcherHint(operator, operatorName, expected)) +
chalk.reset(`Expected value ${operatorMessage(operator)}`) +
` ${printExpected(expected)}\n` +
chalk.reset(`Received:\n`) +
Expand Down
25 changes: 13 additions & 12 deletions packages/jest-jasmine2/src/assertionErrorMessage.ts
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Expand Up @@ -62,10 +62,20 @@ const assertThrowingMatcherHint = (operatorName: string) =>
chalk.dim(')')
: '';

const assertMatcherHint = (operator: string | null, operatorName: string) => {
const assertMatcherHint = (
operator: string | null,
operatorName: string,
expected: unknown,
) => {
let message = '';

if (operatorName) {
if (operator === '==' && expected === true) {
message =
chalk.dim('assert') +
chalk.dim('(') +
chalk.red('received') +
chalk.dim(')');
} else if (operatorName) {
message =
chalk.dim('assert') +
chalk.dim('.' + operatorName + '(') +
Expand All @@ -75,15 +85,6 @@ const assertMatcherHint = (operator: string | null, operatorName: string) => {
chalk.dim(')');
}

if (operator === '==') {
message +=
' or ' +
chalk.dim('assert') +
chalk.dim('(') +
chalk.red('received') +
chalk.dim(') ');
}

return message;
};

Expand Down Expand Up @@ -121,7 +122,7 @@ function assertionErrorMessage(
}

return (
buildHintString(assertMatcherHint(operator, operatorName)) +
buildHintString(assertMatcherHint(operator, operatorName, expected)) +
chalk.reset(`Expected value ${operatorMessage(operator)}`) +
` ${printExpected(expected)}\n` +
chalk.reset(`Received:\n`) +
Expand Down