Workaround IE6 Karma-SauceLabs connectivity issue

karma-runner/karma#983
JamesMGreene · Dec 26, 2015 · 7e45068 · 7e45068
1 parent dba1fa6
commit 7e45068
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Showing 2 changed files with 30 additions and 7 deletions.
diff --git a/Gruntfile.js b/Gruntfile.js
@@ -76,7 +76,7 @@ module.exports = function(grunt) {
         grunt.registerTask("karma-ci-chain", ["karma:ci"]);
       }
       else {
-        var maxConcurrency = 3;
+        var maxConcurrency = 1;
         var karmaConfCi = require("./" + taskConfig.ci.configFile);
         var karmaCiTaskChain = [];
         karmaConfCi(
@@ -87,12 +87,35 @@ module.exports = function(grunt) {
               }
 
               if (conf.browsers && conf.browsers.length > 0) {
-                for (var i = 0, len = conf.browsers.length; i < len; i += maxConcurrency) {
-                  var target = {
+                var i, len, target, targetName,
+                    ie6Regex = /_ie_6\.0$/;
+
+                // Workaround for IE6 issue requires it to use the "jsonp-polling" transport:
+                //   https://github.com/karma-runner/karma/issues/983
+                var ie6Browsers = conf.browsers.filter(function(browserId) {
+                  return ie6Regex.test(browserId);
+                });
+                for (i = 0, len = ie6Browsers.length; i < len; i += maxConcurrency) {
+                  target = {
+                    configFile: taskConfig.ci.configFile
+                  };
+                  target.browsers = ie6Browsers.slice(i, i + maxConcurrency);
+                  target.transports = ["jsonp-polling"];
+                  targetName = maxConcurrency === 1 || len === 1 ? target.browsers[0] : "ci_ie6_" + ((i / maxConcurrency) + 1);
+                  taskConfig[targetName] = target;
+                  karmaCiTaskChain.push("karma:" + targetName);
+                }
+
+
+                var otherBrowsers = conf.browsers.filter(function(browserId) {
+                  return !ie6Regex.test(browserId);
+                });
+                for (i = 0, len = otherBrowsers.length; i < len; i += maxConcurrency) {
+                  target = {
                     configFile: taskConfig.ci.configFile
                   };
-                  target.browsers = conf.browsers.slice(i, i + maxConcurrency);
-                  var targetName = "ci_" + ((i / maxConcurrency) + 1);
+                  target.browsers = otherBrowsers.slice(i, i + maxConcurrency);
+                  targetName = maxConcurrency === 1 || len === 1 ? target.browsers[0] : "ci_" + ((i / maxConcurrency) + 1);
                   taskConfig[targetName] = target;
                   karmaCiTaskChain.push("karma:" + targetName);
                 }

diff --git a/karma.conf-ci.js b/karma.conf-ci.js
@@ -185,8 +185,8 @@ function generateCustomLaunchers() {
       "10.0": ["Windows 8"],
       "9.0":  ["Windows 7"],
       "8.0":  ["Windows 7"],
-      "7.0":  ["Windows XP"]
-      //, "6.0":  ["Windows XP"]   // IE6 always fails to connect and times out
+      "7.0":  ["Windows XP"],
+      "6.0":  ["Windows XP"]   // IE6 tends to timeout and fail to connect
     },
     "firefox": {
       "dev":  ["Windows 7", "OS X 10.10", "Linux"],