92 lines
2.7 KiB
JavaScript
92 lines
2.7 KiB
JavaScript
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//
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// HTTP Accept-Language header test
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//
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Cu.import("resource://gre/modules/NetUtil.jsm");
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var testpath = "/bug672448";
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function run_test() {
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let intlPrefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService).getBranch("intl.");
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// Save old value of preference for later.
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let oldPref = intlPrefs.getCharPref("accept_languages");
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// Test different numbers of languages, to test different fractions.
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let acceptLangTests = [
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"qaa", // 1
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"qaa,qab", // 2
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"qaa,qab,qac,qad", // 4
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"qaa,qab,qac,qad,qae,qaf,qag,qah", // 8
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"qaa,qab,qac,qad,qae,qaf,qag,qah,qai,qaj", // 10
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"qaa,qab,qac,qad,qae,qaf,qag,qah,qai,qaj,qak", // 11
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"qaa,qab,qac,qad,qae,qaf,qag,qah,qai,qaj,qak,qal,qam,qan,qao,qap,qaq,qar,qas,qat,qau", // 21
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oldPref, // Restore old value of preference (and test it).
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];
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let acceptLangTestsNum = acceptLangTests.length;
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for (let i = 0; i < acceptLangTestsNum; i++) {
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// Set preference to test value.
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intlPrefs.setCharPref("accept_languages", acceptLangTests[i]);
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// Test value.
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test_accepted_languages();
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}
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}
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function test_accepted_languages() {
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let channel = setupChannel(testpath);
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let AcceptLanguage = channel.getRequestHeader("Accept-Language");
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let acceptedLanguages = AcceptLanguage.split(",");
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let acceptedLanguagesLength = acceptedLanguages.length;
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for (let i = 0; i < acceptedLanguagesLength; i++) {
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let acceptedLanguage, qualityValue;
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try {
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// The q-value must conform to the definition in HTTP/1.1 Section 3.9.
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[_, acceptedLanguage, qualityValue] = acceptedLanguages[i].trim().match(/^([a-z0-9_-]*?)(?:;q=(1(?:\.0{0,3})?|0(?:\.[0-9]{0,3})))?$/i);
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} catch(e) {
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do_throw("Invalid language tag or quality value: " + e);
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}
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if (i == 0) {
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// The first language shouldn't have a quality value.
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do_check_eq(qualityValue, undefined);
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} else {
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let decimalPlaces;
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// When the number of languages is small, we keep the quality value to only one decimal place.
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// Otherwise, it can be up to two decimal places.
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if (acceptedLanguagesLength < 10) {
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do_check_true(qualityValue.length == 3);
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decimalPlaces = 1;
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} else {
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do_check_true(qualityValue.length >= 3);
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do_check_true(qualityValue.length <= 4);
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decimalPlaces = 2;
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}
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// All the other languages should have an evenly-spaced quality value.
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do_check_eq(parseFloat(qualityValue).toFixed(decimalPlaces), (1.0 - ((1 / acceptedLanguagesLength) * i)).toFixed(decimalPlaces));
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}
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}
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}
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function setupChannel(path) {
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let chan = NetUtil.newChannel ({
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uri: "http://localhost:4444" + path,
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loadUsingSystemPrincipal: true
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});
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chan.QueryInterface(Ci.nsIHttpChannel);
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return chan;
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}
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