add chrome and karma config

Author: ABenassi87

.travis.yml

@@ -1,4 +1,6 @@
 language: node_js
+dist: trusty
+sudo: required
 node_js:
 - '8'
 before_install:

projects/ngx-text-diff/karma.conf.js

@@ -24,8 +24,15 @@ module.exports = function (config) {
     port: 9876,
     colors: true,
     logLevel: config.LOG_INFO,
-    autoWatch: true,
-    browsers: ['Chrome'],
-    singleRun: false
+    autoWatch: false,
+    browsers: ['ChromeHeadless'],
+    // you can define custom flags
+    customLaunchers: {
+      ChromeHeadlessNoSandbox: {
+        base: 'ChromeHeadless',
+        flags: ['--no-sandbox']
+      }
+    },
+    singleRun: true
   });
 };

src/karma.conf.js

@@ -24,8 +24,15 @@ module.exports = function (config) {
     port: 9876,
     colors: true,
     logLevel: config.LOG_INFO,
-    autoWatch: true,
-    browsers: ['Chrome'],
-    singleRun: false
+    autoWatch: false,
+    browsers: ['ChromeHeadless'],
+    // you can define custom flags
+    customLaunchers: {
+      ChromeHeadlessNoSandbox: {
+        base: 'ChromeHeadless',
+        flags: ['--no-sandbox']
+      }
+    },
+    singleRun: true
   });
-};
+};