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Bug 793949 - Test that OS.File.copy overwrites rather than appending. r=froydnj

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This commit is contained in:
David Rajchenbach-Teller 2012-09-26 21:37:23 -04:00
parent 030b6921a1
commit 0d64618fca
1 changed files with 21 additions and 0 deletions
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21
toolkit/components/osfile/tests/mochi/worker_test_osfile_front.js
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@ -351,6 +351,27 @@ function test_copy_existing_file()
ok(true, "test_copy_existing: Copy complete");
compare_files("test_copy_existing", src_file_name, tmp_file_name);
// Create a bogus file with arbitrary content, then attempt to overwrite
// it with |copy|.
let dest = OS.File.open(tmp_file_name, {trunc: true});
let buf = new ArrayBuffer(50);
dest.write(buf);
dest.close();
OS.File.copy(src_file_name, tmp_file_name);
compare_files("test_copy_existing 2", src_file_name, tmp_file_name);
// Attempt to overwrite with noOverwrite
let exn;
try {
OS.File.copy(src_file_name, tmp_file_name, {noOverwrite: true});
} catch(x) {
exn = x;
}
ok(!!exn, "test_copy_existing: noOverwrite prevents overwriting existing files");
ok(true, "test_copy_existing: Cleaning up");
OS.File.remove(tmp_file_name);
}