Load the examples using PhantomJS

This commit adds a check-examples target to check that the hosted examples load without errors.

bin/check-example.js

@@ -0,0 +1,30 @@
+//
+// A PhantomJS script used to check that the hosted examples load
+// without errors. This script is executed by the build tool's
+// check-examples target.
+//
+var args = require('system').args;
+if (args.length != 2) {
+  phantom.exit(2);
+}
+var examplePath = args[1];
+var page = require('webpage').create();
+page.onError = function(msg, trace) {
+  var msgStack = ['JavaScript ERROR: ' + msg];
+  if (trace) {
+    msgStack.push('TRACE:');
+    trace.forEach(function(t) {
+      msgStack.push(' -> ' + t.file + ': ' + t.line + (t.function ? ' (in function "' + t.function + '")' : ''));
+    });
+  }
+  console.error(msgStack.join('\n'));
+  phantom.exit(1);
+};
+page.open(examplePath, function(s) {
+  var exitCode = 0;
+  if (s != 'success') {
+    exitCode = 1;
+    console.error('PAGE LOAD ERROR');
+  }
+  phantom.exit(exitCode);
+});

build.py

@@ -95,7 +95,7 @@ def report_sizes(t):
 virtual('all', 'build-all', 'build', 'examples', 'precommit')
 
 
-virtual('precommit', 'lint', 'build-all', 'test', 'build', 'build-examples', 'doc')
+virtual('precommit', 'lint', 'build-all', 'test', 'build', 'build-examples', 'check-examples', 'doc')
 
 
 virtual('build', 'build/ol.css', 'build/ol.js', 'build/ol-simple.js', 'build/ol-whitespace.js')
@@ -356,6 +356,17 @@ def hostexamples(t):
     t.cp('examples/example-list.js', 'examples/example-list.xml', 'examples/Jugl.js', 'build/gh-pages/%(BRANCH)s/examples/')
 
 
+@target('check-examples', 'hostexamples', phony=True)
+def check_examples(t):
+    directory = 'build/gh-pages/%(BRANCH)s/'
+    examples = ['build/gh-pages/%(BRANCH)s/' + e for e in EXAMPLES]
+    all_examples = examples + \
+        [e + '?mode=simple' for e in examples] + \
+        [e + '?mode=whitespace' for e in examples]
+    for example in all_examples:
+        t.run('%(PHANTOMJS)s', 'bin/check-example.js', example)
+
+
 @target(PROJ4JS, PROJ4JS_ZIP)
 def proj4js(t):
     from zipfile import ZipFile

build/ol-simple.json

@@ -1,5 +1,15 @@
 {
 
+  // If ambiguate-properties and disambiguate-properties are set to true
+  // we get function names like "ol_control_Control_prototype$setMap" in
+  // the compiled code when using the SIMPLE compilation. It looks like
+  // "ambiguate-properties" and  "disambiguate-properties" are only
+  // appropriate for ADVANCED compilation.
+
+  "ambiguate-properties": false,
+
+  "disambiguate-properties": false,
+
   "id": "ol-simple",
 
   "externs": [

build/ol-whitespace.json

@@ -2,6 +2,17 @@
 
   "id": "ol-whitespace",
 
+  // If ambiguate-properties and disambiguate-properties are set to true
+  // we get function names like "ol_control_Control_prototype$setMap" in
+  // the compiled code when using the SIMPLE compilation. It looks like
+  // "ambiguate-properties" and  "disambiguate-properties" are only
+  // appropriate for ADVANCED compilation. To be sure we also don't
+  // set them for WHITESPACE.
+
+  "ambiguate-properties": false,
+
+  "disambiguate-properties": false,
+
   "externs": [
     "externs/bingmaps.js",
     "externs/proj4js.js",