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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/* exported PerTestCoverageUtils */
// This is the directory where gcov is emitting the gcda files.
const gcovPrefixPath = Services.env.get("GCOV_PREFIX");
// This is the directory where codecoverage.py is expecting to see the gcda files.
const gcovResultsPath = Services.env.get("GCOV_RESULTS_DIR");
// This is the directory where the JS engine is emitting the lcov files.
const jsvmPrefixPath = Services.env.get("JS_CODE_COVERAGE_OUTPUT_DIR");
// This is the directory where codecoverage.py is expecting to see the lcov files.
const jsvmResultsPath = Services.env.get("JSVM_RESULTS_DIR");
function awaitPromise(promise) {
let ret;
let complete = false;
let error = null;
promise
.catch(e => (error = e))
.then(v => {
ret = v;
complete = true;
});
Services.tm.spinEventLoopUntil(
"PerTestCoverageUtils.sys.mjs:awaitPromise",
() => complete
);
if (error) {
throw new Error(error);
}
return ret;
}
export var PerTestCoverageUtils = class PerTestCoverageUtilsClass {
// Resets the counters to 0.
static async beforeTest() {
if (!PerTestCoverageUtils.enabled) {
return;
}
// Flush the counters.
let codeCoverageService = Cc[
"@mozilla.org/tools/code-coverage;1"
].getService(Ci.nsICodeCoverage);
await codeCoverageService.flushCounters();
// Remove coverage files created by the flush, and those that might have been created between the end of a previous test and the beginning of the next one (e.g. some tests can create a new content process for every sub-test).
await IOUtils.remove(gcovPrefixPath, {
recursive: true,
ignoreAbsent: true,
});
await IOUtils.remove(jsvmPrefixPath, {
recursive: true,
ignoreAbsent: true,
});
// Move coverage files from the GCOV_RESULTS_DIR and JSVM_RESULTS_DIR directories, so we can accumulate the counters.
await IOUtils.move(gcovResultsPath, gcovPrefixPath);
await IOUtils.move(jsvmResultsPath, jsvmPrefixPath);
}
static beforeTestSync() {
awaitPromise(this.beforeTest());
}
// Dumps counters and moves the gcda files in the directory expected by codecoverage.py.
static async afterTest() {
if (!PerTestCoverageUtils.enabled) {
return;
}
// Flush the counters.
let codeCoverageService = Cc[
"@mozilla.org/tools/code-coverage;1"
].getService(Ci.nsICodeCoverage);
await codeCoverageService.flushCounters();
// Move the coverage files in GCOV_RESULTS_DIR and JSVM_RESULTS_DIR, so that the execution from now to shutdown (or next test) is not counted.
await IOUtils.move(gcovPrefixPath, gcovResultsPath);
await IOUtils.move(jsvmPrefixPath, jsvmResultsPath);
}
static afterTestSync() {
awaitPromise(this.afterTest());
}
};
PerTestCoverageUtils.enabled = !!gcovResultsPath;
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