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Test Info:
ChromeUtils.defineESModuleGetters(this, {
});
const { AttributionIOUtils } = ChromeUtils.importESModule(
);
add_task(async function test_parse_error() {
registerCleanupFunction(async () => {
await AttributionCode.deleteFileAsync();
AttributionCode._clearCache();
});
const histogram = Services.telemetry.getHistogramById(
"BROWSER_ATTRIBUTION_ERRORS"
);
// Delete the file to trigger a read error
await AttributionCode.deleteFileAsync();
AttributionCode._clearCache();
// Clear any existing telemetry
histogram.clear();
let result = await AttributionCode.getAttrDataAsync();
Assert.deepEqual(
result,
{},
"Shouldn't be able to get a result if the file doesn't exist"
);
// Write an invalid file to trigger a decode error
// Skip this for MSIX packages though - we can't write or delete
// the attribution file there, everything happens in memory instead.
if (
AppConstants.platform === "win" &&
!Services.sysinfo.getProperty("hasWinPackageId")
) {
await AttributionCode.deleteFileAsync();
AttributionCode._clearCache();
await AttributionCode.writeAttributionFile("");
result = await AttributionCode.getAttrDataAsync();
Assert.deepEqual(result, {}, "Should have failed to parse");
// `assertHistogram` also ensures that `read_error` index 0 is 0
// as we should not have recorded telemetry from the previous `getAttrDataAsync` call
TelemetryTestUtils.assertHistogram(histogram, INDEX_DECODE_ERROR, 1);
// Reset
histogram.clear();
}
});
add_task(async function test_read_error() {
registerCleanupFunction(async () => {
await AttributionCode.deleteFileAsync();
AttributionCode._clearCache();
});
const histogram = Services.telemetry.getHistogramById(
"BROWSER_ATTRIBUTION_ERRORS"
);
// Delete the file to trigger a read error
await AttributionCode.deleteFileAsync();
AttributionCode._clearCache();
// Clear any existing telemetry
histogram.clear();
// Force the file to exist but then cause a read error
let oldExists = AttributionIOUtils.exists;
AttributionIOUtils.exists = () => true;
let oldRead = AttributionIOUtils.read;
AttributionIOUtils.read = () => {
throw new Error("read_error");
};
// On MSIX builds, AttributionIOUtils.read is not used; AttributionCode.msixCampaignId is.
// Ensure we override that as well.
let oldMsixCampaignId = AttributionCode.msixCampaignId;
AttributionCode.msixCampaignId = async () => {
throw new Error("read_error");
};
registerCleanupFunction(() => {
AttributionIOUtils.exists = oldExists;
AttributionIOUtils.read = oldRead;
AttributionCode.msixCampaignId = oldMsixCampaignId;
});
// Try to read the file
await AttributionCode.getAttrDataAsync();
// It should record the read error
TelemetryTestUtils.assertHistogram(histogram, INDEX_READ_ERROR, 1);
// Clear any existing telemetry
histogram.clear();
});