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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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Add m-esr52 at 52.6.0
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diff --git a/netwerk/test/unit/test_header_Accept-Language.js b/netwerk/test/unit/test_header_Accept-Language.js
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+//
+// HTTP Accept-Language header test
+//
+
+Cu.import("resource://gre/modules/NetUtil.jsm");
+
+var testpath = "/bug672448";
+
+function run_test() {
+ let intlPrefs = Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefService).getBranch("intl.");
+
+ // Save old value of preference for later.
+ let oldPref = intlPrefs.getCharPref("accept_languages");
+
+ // Test different numbers of languages, to test different fractions.
+ let acceptLangTests = [
+ "qaa", // 1
+ "qaa,qab", // 2
+ "qaa,qab,qac,qad", // 4
+ "qaa,qab,qac,qad,qae,qaf,qag,qah", // 8
+ "qaa,qab,qac,qad,qae,qaf,qag,qah,qai,qaj", // 10
+ "qaa,qab,qac,qad,qae,qaf,qag,qah,qai,qaj,qak", // 11
+ "qaa,qab,qac,qad,qae,qaf,qag,qah,qai,qaj,qak,qal,qam,qan,qao,qap,qaq,qar,qas,qat,qau", // 21
+ oldPref, // Restore old value of preference (and test it).
+ ];
+
+ let acceptLangTestsNum = acceptLangTests.length;
+
+ for (let i = 0; i < acceptLangTestsNum; i++) {
+ // Set preference to test value.
+ intlPrefs.setCharPref("accept_languages", acceptLangTests[i]);
+
+ // Test value.
+ test_accepted_languages();
+ }
+}
+
+function test_accepted_languages() {
+ let channel = setupChannel(testpath);
+
+ let AcceptLanguage = channel.getRequestHeader("Accept-Language");
+
+ let acceptedLanguages = AcceptLanguage.split(",");
+
+ let acceptedLanguagesLength = acceptedLanguages.length;
+
+ for (let i = 0; i < acceptedLanguagesLength; i++) {
+ let acceptedLanguage, qualityValue;
+
+ try {
+ // The q-value must conform to the definition in HTTP/1.1 Section 3.9.
+ [_, acceptedLanguage, qualityValue] = acceptedLanguages[i].trim().match(/^([a-z0-9_-]*?)(?:;q=(1(?:\.0{0,3})?|0(?:\.[0-9]{0,3})))?$/i);
+ } catch(e) {
+ do_throw("Invalid language tag or quality value: " + e);
+ }
+
+ if (i == 0) {
+ // The first language shouldn't have a quality value.
+ do_check_eq(qualityValue, undefined);
+ } else {
+ let decimalPlaces;
+
+ // When the number of languages is small, we keep the quality value to only one decimal place.
+ // Otherwise, it can be up to two decimal places.
+ if (acceptedLanguagesLength < 10) {
+ do_check_true(qualityValue.length == 3);
+
+ decimalPlaces = 1;
+ } else {
+ do_check_true(qualityValue.length >= 3);
+ do_check_true(qualityValue.length <= 4);
+
+ decimalPlaces = 2;
+ }
+
+ // All the other languages should have an evenly-spaced quality value.
+ do_check_eq(parseFloat(qualityValue).toFixed(decimalPlaces), (1.0 - ((1 / acceptedLanguagesLength) * i)).toFixed(decimalPlaces));
+ }
+ }
+}
+
+function setupChannel(path) {
+
+ let chan = NetUtil.newChannel ({
+ uri: "http://localhost:4444" + path,
+ loadUsingSystemPrincipal: true
+ });
+
+ chan.QueryInterface(Ci.nsIHttpChannel);
+ return chan;
+}