[Webkit-unassigned] [Bug 209338] [GTK] Using --skip-failing-tests cause some disk-cache tests to fail

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=209338

Diego Pino <dpino at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dpino at igalia.com

--- Comment #2 from Diego Pino <dpino at igalia.com> ---
The test disk-cache-disable.html leaves the cache as DocumentBrowser.

```
debug("Default (cache enabled)");
runTests(tests, function () {
    debug("Disabling cache");
    testRunner.setCacheModel(0); // DocumentViewer
    runTests(tests, function () {
         debug("Re-enabling cache");
         testRunner.setCacheModel(1); // DocumentBrowser
         runTests(tests);
    });
});
```

If I run the test http/tests/cache/disk-cache/redirect-chain-limits.html alone, it fails. However, if I run disk-cache-disable.html before this test, it passes.

If I edit http/tests/cache/disk-cache/redirect-chain-limits.html, and do the same steps as disk-cache-disable.html before running the test, the test passes too:

```
testRunner.setCacheModel(0);
testRunner.setCacheModel(1);

testRedirectChain(1, () => {
    testRedirectChain(5, () => {
        testRedirectChain(6, () => {
            testRedirectChain(20, () => {
                testRedirectChain(40, () => {
                    finishJSTest();
                });
            });
        });
    });
});

```

If I simply do `testRunner.setCacheModel(1)` before running the test, it doesn't work. It seems is necessary to do `testRunner.setCacheModel(0)`.

It seems that whether disk-cache-disable.html is run before or after the other tests have an effect on the result of the tests. According to Source/WebKit/UIProcess/API/glib/WebKitWebContext.cpp:webkit_web_context_set_cache_model the default cache model is DocumentBrowser, so the additional steps in `redirect-chain-limits.html` shouldn't be necessary. 

Regarding the connection with --skip-failing-tests, this flag doesn't run the tests marked as failure in TestExpectations. Since disk-cache-disable.html is in gtk/TestExpectactions, the test is run and the cache is never set to DocumentBrowser, and all the other disk-cache tests fail.

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