821433 - ipc/testshell/tests/test_ipcshell.js fails on B2G emulator

Status: RESOLVED INCOMPLETE

(Testing :: XPCShell Harness, defect)

Description

[Andrew Halberstadt [:ahal]]

https://tbpl.mozilla.org/php/getParsedLog.php?id=17794511&tree=Cedar#error36

Comment 1

[Jim Blandy :jimb]

Attachment: Possible test case for B2G xpcshell failures

It seems like the problem is that the path passed in _TEST_FILE doesn't actually refer to the test file, so any tests that use 'load' to re-load themselves fail. This simple test should show up the problem, if that's the case.

Comment 2

[Jim Blandy :jimb]

Here's a try push, for B2G xpcshell tests only: https://tbpl.mozilla.org/?tree=Try&rev=e9b5c26e19c3

Comment 3

[Jim Blandy :jimb]

That last try push worked; here's another one that does the 'load' in a content child process:
https://tbpl.mozilla.org/?tree=Try&rev=ae959b431468

Comment 4

[Jim Blandy :jimb]

At last! That push failed! One more, with better diagnostics:
https://tbpl.mozilla.org/?tree=Try&rev=271009bf647f

Comment 5

[Jim Blandy :jimb]

14:37:08  WARNING -  TEST-UNEXPECTED-FAIL | test_load_self.js | Error: cannot open file 'test_load_self.js' for reading == true - See following stack:

Okay, that makes it pretty clear. How can we sort out the difference between the parent and child process's situation such that the parent can load the file, but the child can't?

Comment 6

[Jim Blandy :jimb]

Attachment: Possible test case for B2G xpcshell failures

Comment 7

[Jim Blandy :jimb]

I'm told that B2G child processes do indeed have restricted access to the filesystem; all file I/O should be done by the parent, which should then ship the data to the child. So these tests are not properly written.