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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /parser/htmlparser/tests/mochitest/test_img_picture_preload.html | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'parser/htmlparser/tests/mochitest/test_img_picture_preload.html')
| -rw-r--r-- | parser/htmlparser/tests/mochitest/test_img_picture_preload.html | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/parser/htmlparser/tests/mochitest/test_img_picture_preload.html b/parser/htmlparser/tests/mochitest/test_img_picture_preload.html new file mode 100644 index 000000000..8193dd2a8 --- /dev/null +++ b/parser/htmlparser/tests/mochitest/test_img_picture_preload.html @@ -0,0 +1,87 @@ +<!DOCTYPE HTML> +<html> +<!-- +https://bugzilla.mozilla.org/show_bug.cgi?id=1067345 +--> +<head> + <title>Test for Bug 1067345</title> + <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> +</head> +<body> + + <script type="text/javascript"> + // Ensure srcset/picture are enabled, re-run the test at different DPI + // levels to ensure preload step does the right responsive image selection + + SimpleTest.waitForExplicitFinish(); + + var testDPIs = [ "1.0", "0.5", "2.0", "1.5" ]; + var iframe = document.createElement("iframe"); + + // These accessed by child frame + var currentDPI; + + document.body.appendChild(iframe); + + SpecialPowers.pushPrefEnv({'set': [ [ "dom.image.srcset.enabled", true ], + [ "dom.image.picture.enabled", true ]] }, + function() { + // Reset the sjs helper so repeat runs work + resetRequests(); + setTimeout(nextTest, 0); + }); + + function resetRequests() { + // Ask the SJS to reset requests + var request = new XMLHttpRequest(); + request.open('GET', "./file_img_picture_preload.sjs?reset", false); + request.send(null); + is(request.status, 200, "Sending reset to helper should succeed"); + // Script responds with pre-reset request count + var previousRequests = +request.responseText; + + return previousRequests; + } + + // Called when iframe is finished + function childTestFinished(requestsMade) { + setTimeout(function() { + // Reset sjs, ensure no new requests appeared after test finished + var requestsCleared = resetRequests(); + is(requestsCleared, requestsMade, + "Should not have recorded new requests after test iteration completed"); + + setTimeout(nextTest, 0); + }, 0); + } + + function nextTest() { + // Re-run test for each DPI level + if (testDPIs.length) { + currentDPI = testDPIs.pop(); + info("Starting test for DPI: " + currentDPI); + // To avoid spurious image loads being reported when the resolution changes, + // load an intermediate iframe. + iframe.src = "about:blank"; + iframe.addEventListener('load', function on_iframe_load() { + iframe.removeEventListener('load', on_iframe_load); + SpecialPowers.pushPrefEnv({'set': [ [ "layout.css.devPixelsPerPx", currentDPI ]] }, + function() { + // Clear image cache for next run (we don't try to validate cached items + // in preload). + SpecialPowers.Cc["@mozilla.org/image/tools;1"] + .getService(SpecialPowers.Ci.imgITools) + .getImgCacheForDocument(iframe.contentDocument) + .clearCache(false); + iframe.src = "./file_img_picture_preload.html?" + currentDPI; + }); + }); + } else { + SimpleTest.finish(); + } + } + </script> + +</body> +</html> |