mozilla-central/toolkit/mozapps/update/tests/unit_aus_update/updateSyncManager.js (file symbol)

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Test Info: Errors

/* Any copyright is dedicated to the Public Domain.
*/
// This test verifies that the update sync manager is working correctly by
// a) making sure we're the only one that's opened it to begin with, and then
// b) starting a second copy of the same binary and making sure we can tell we
// are no longer the only one that's opened it.
const { Subprocess } = ChromeUtils.importESModule(
);
// Save off the real GRE directory and binary path before we register our
// mock directory service which overrides them both.
const thisBinary = Services.dirsvc.get("XREExeF", Ci.nsIFile);
const greDir = Services.dirsvc.get("GreD", Ci.nsIFile);
add_task(async function () {
setupTestCommon();
// First check that we believe we exclusively hold the lock.
let syncManager = Cc["@mozilla.org/updates/update-sync-manager;1"].getService(
Ci.nsIUpdateSyncManager
);
Assert.ok(
!syncManager.isOtherInstanceRunning(),
"no other instance is running yet"
);
// Now start a second copy of this xpcshell binary so that something else
// takes the same lock. First we'll define its command line.
// Most of the child's code is in a separate script file, so all the command
// line has to do is set up a few required path strings we need to pass
// through to the child, and then include the script file.
const args = [
"-g",
greDir.path,
"-e",
`
const customGreDirPath = "${getApplyDirFile(
DIR_RESOURCES
).path.replaceAll("\\", "\\\\")}";
const customGreBinDirPath = "${getApplyDirFile(DIR_MACOS).path.replaceAll(
"\\",
"\\\\"
)}";
const customExePath = "${getApplyDirFile(
DIR_MACOS + FILE_APP_BIN
).path.replaceAll("\\", "\\\\")}";
const customUpdDirPath = "${getMockUpdRootD().path.replaceAll(
"\\",
"\\\\"
)}";
const customOldUpdDirPath = "${getMockUpdRootD(true).path.replaceAll(
"\\",
"\\\\"
)}";
`,
"-f",
getTestDirFile("syncManagerTestChild.js").path,
];
// Run the second copy two times, to show the lock is usable after having
// been closed.
for (let runs = 0; runs < 2; runs++) {
// Now we can actually invoke the process.
debugDump(
`launching child process at ${thisBinary.path} with args ${args}`
);
Subprocess.call({
command: thisBinary.path,
arguments: args,
stderr: "stdout",
});
// It will take the new xpcshell a little time to start up, but we should see
// the effect on the lock within at most a few seconds.
await TestUtils.waitForCondition(
() => syncManager.isOtherInstanceRunning(),
"waiting for child process to take the lock"
).catch(_e => {
// Rather than throwing out of waitForCondition(), catch and log the failure
// manually so that we get output that's a bit more readable.
Assert.ok(
syncManager.isOtherInstanceRunning(),
"child process has the lock"
);
});
// The lock should have been closed when the process exited, but we'll allow
// a little time for the OS to clean up the handle.
await TestUtils.waitForCondition(
() => !syncManager.isOtherInstanceRunning(),
"waiting for child process to release the lock"
).catch(_e => {
Assert.ok(
!syncManager.isOtherInstanceRunning(),
"child process has released the lock"
);
});
}
doTestFinish();
});