Test config update

test/README.md

@@ -15,7 +15,7 @@ Run the tests once:
 
     npm test
 
-This will run tests in Chrome.  If you do not have Chrome installed, you can run tests on Firefox instead:
+This will run tests in (headless) Chrome.  If you do not have Chrome installed, you can run tests on Firefox instead:
 
     npm test -- --browsers Firefox
 
@@ -25,9 +25,12 @@ To run the tests continuously:
 
     npm run karma
 
-After this, the test server is listening on http://localhost:9876/, and you can
-attach any number of browsers for testing (during development, tests will run
-in Chrome by default).
+After this, you can attach any browser and debug the tests like this:
+
+ * open http://localhost:9876/debug.html
+ * open the developer tools
+ * add a breakpoint
+ * refresh the page
 
 # Rendering tests
 

test/browser/karma.config.cjs

@@ -4,9 +4,9 @@ const path = require('path');
 
 module.exports = function (karma) {
   karma.set({
-    browsers: [process.env.CI ? 'ChromeHeadless' : 'Chrome'],
+    browsers: ['ChromeHeadless'],
     browserDisconnectTolerance: 2,
-    frameworks: ['webpack', 'mocha'],
+    frameworks: ['webpack', 'mocha', 'source-map-support'],
     client: {
       runInParent: true,
       mocha: {
@@ -63,14 +63,9 @@ module.exports = function (karma) {
       '/spec/': '/base/spec/',
     },
     preprocessors: {
-      '**/*.js': ['webpack', 'sourcemap'],
-    },
-    reporters: ['dots', 'coverage-istanbul'],
-    coverageIstanbulReporter: {
-      reports: ['text-summary', 'html'],
-      dir: path.resolve(__dirname, '../../coverage/'),
-      fixWebpackSourcePaths: true,
+      '**/*.js': ['webpack'], //, 'sourcemap'],
     },
+    reporters: ['dots'],
     webpack: {
       devtool: 'inline-source-map',
       mode: 'development',
@@ -97,17 +92,6 @@ module.exports = function (karma) {
             include: path.resolve('src/ol/'),
             exclude: path.resolve('node_modules/'),
           },
-          {
-            test: /\.js$/,
-            use: {
-              loader: 'coverage-istanbul-loader',
-              options: {
-                esModules: true,
-              },
-            },
-            include: path.resolve('src/ol/'),
-            exclude: path.resolve('node_modules/'),
-          },
           {
             test: /\.js$/,
             use: {