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Diffstat (limited to '')
-rw-r--r-- | testing/web-platform/tests/common/subset-tests.js | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/testing/web-platform/tests/common/subset-tests.js b/testing/web-platform/tests/common/subset-tests.js new file mode 100644 index 0000000000..58e93413de --- /dev/null +++ b/testing/web-platform/tests/common/subset-tests.js @@ -0,0 +1,60 @@ +(function() { + var subTestStart = 0; + var subTestEnd = Infinity; + var match; + if (location.search) { + match = /(?:^\?|&)(\d+)-(\d+|last)(?:&|$)/.exec(location.search); + if (match) { + subTestStart = parseInt(match[1], 10); + if (match[2] !== "last") { + subTestEnd = parseInt(match[2], 10); + } + } + // Below is utility code to generate <meta> for copy/paste into tests. + // Sample usage: + // test.html?split=1000 + match = /(?:^\?|&)split=(\d+)(?:&|$)/.exec(location.search); + if (match) { + var testsPerVariant = parseInt(match[1], 10); + add_completion_callback(tests => { + var total = tests.length; + var template = '<meta name="variant" content="?%s-%s">'; + var metas = []; + for (var i = 1; i < total - testsPerVariant; i = i + testsPerVariant) { + metas.push(template.replace("%s", i).replace("%s", i + testsPerVariant - 1)); + } + metas.push(template.replace("%s", i).replace("%s", "last")); + var pre = document.createElement('pre'); + pre.textContent = metas.join('\n'); + document.body.insertBefore(pre, document.body.firstChild); + document.getSelection().selectAllChildren(pre); + }); + } + } + /** + * Check if `currentSubTest` is in the subset specified in the URL. + * @param {number} currentSubTest + * @returns {boolean} + */ + function shouldRunSubTest(currentSubTest) { + return currentSubTest >= subTestStart && currentSubTest <= subTestEnd; + } + var currentSubTest = 0; + /** + * Only test a subset of tests with, e.g., `?1-10` in the URL. + * Can be used together with `<meta name="variant" content="...">` + * Sample usage: + * for (const test of tests) { + * subsetTest(async_test, test.fn, test.name); + * } + */ + function subsetTest(testFunc, ...args) { + currentSubTest++; + if (shouldRunSubTest(currentSubTest)) { + return testFunc(...args); + } + return null; + } + self.shouldRunSubTest = shouldRunSubTest; + self.subsetTest = subsetTest; +})(); |