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tests(smokehouse): assert on expected array length #9292

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merged 5 commits into from
Jul 9, 2019
Merged

tests(smokehouse): assert on expected array length #9292

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3b8076e
tests(smokehouse): assert on expected array length
connorjclark Jun 27, 2019
c304111
lint
connorjclark Jun 27, 2019
886a109
pr
connorjclark Jul 8, 2019
4132e07
Update lighthouse-cli/test/smokehouse/smokehouse-report.js
connorjclark Jul 8, 2019
2546943
drop the 'is'. it's cleaner.
connorjclark Jul 8, 2019
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3 changes: 3 additions & 0 deletions lighthouse-cli/test/smokehouse/byte-efficiency/expectations.js
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Original file line number Diff line number Diff line change
Expand Up @@ -140,6 +140,9 @@ module.exports = [
transferSize: 53181,
resourceSize: 52997,
},
{
url: 'http://localhost:10200/favicon.ico',
},
],
},
},
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14 changes: 10 additions & 4 deletions lighthouse-cli/test/smokehouse/error-expectations.js
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Expand Up @@ -5,6 +5,12 @@
*/
'use strict';

// Just using `[]` actually asserts for an empty array.
// Use this expectation object to assert an array with at least one element.
const NONEMPTY_ARRAY = {
length: '>0',
};

/**
* Expected Lighthouse audit values for sites with various errors.
*/
Expand All @@ -24,10 +30,10 @@ module.exports = [
artifacts: {
PageLoadError: {code: 'PAGE_HUNG'},
devtoolsLogs: {
'pageLoadError-defaultPass': [/* ... */],
'pageLoadError-defaultPass': NONEMPTY_ARRAY,
},
traces: {
'pageLoadError-defaultPass': {traceEvents: [/* ... */]},
'pageLoadError-defaultPass': {traceEvents: NONEMPTY_ARRAY},
},
},
},
Expand All @@ -46,10 +52,10 @@ module.exports = [
artifacts: {
PageLoadError: {code: 'INSECURE_DOCUMENT_REQUEST'},
devtoolsLogs: {
'pageLoadError-defaultPass': [/* ... */],
'pageLoadError-defaultPass': NONEMPTY_ARRAY,
},
traces: {
'pageLoadError-defaultPass': {traceEvents: [/* ... */]},
'pageLoadError-defaultPass': {traceEvents: NONEMPTY_ARRAY},
},
},
},
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12 changes: 12 additions & 0 deletions lighthouse-cli/test/smokehouse/smokehouse-report.js
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Expand Up @@ -98,6 +98,18 @@ function findDifference(path, actual, expected) {
}
}

// If the expected value is an array, assert the length as well.
// This still allows for asserting that the first n elements of an array are specified elements,
// but requires using an object literal (ex: {0: x, 1: y, 2: z} matches [x, y, z, q, w, e] and
// {0: x, 1: y, 2: z, length: 5} does not match [x, y, z].
if (Array.isArray(expected) && actual.length !== expected.length) {
return {
path: `${path}.length`,
actual,
expected,
};
}

return null;
}

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