Add test for dynamically loading a language plugin

core/modules/pluginswitcher.js

@@ -38,6 +38,7 @@ function PluginSwitcher(options) {
 }
 
 PluginSwitcher.prototype.switchPlugins = function() {
+	var self = this;
 	// Get the name of the current theme
 	var selectedPluginTitle = this.wiki.getTiddlerText(this.controllerTitle);
 	// If it doesn't exist, then fallback to one of the default themes
@@ -61,13 +62,37 @@ PluginSwitcher.prototype.switchPlugins = function() {
 		};
 	accumulatePlugin(selectedPluginTitle);
 	// Read the plugin info for the incoming plugins
-	var changes = this.wiki.readPluginInfo(plugins);
+	var changedPluginInfo = this.wiki.readPluginInfo(plugins);
+	// Collect the shadow tiddlers of any deleted plugins
+	var changedShadowTiddlers = {};
+	$tw.utils.each(changedPluginInfo.deletedPlugins,function(pluginTitle) {
+		var contents = changedPluginInfo.deletedPluginContents[pluginTitle];
+		if(contents && contents.tiddlers) {
+			$tw.utils.each(Object.keys(contents.tiddlers),function(title) {
+				changedShadowTiddlers[title] = true;
+			});
+		}
+	});
+	// Collect the shadow tiddlers of any modified plugins
+	$tw.utils.each(changedPluginInfo.modifiedPlugins,function(pluginTitle) {
+		var pluginInfo = self.wiki.getPluginInfo(pluginTitle);
+		if(pluginInfo && pluginInfo.tiddlers) {
+			$tw.utils.each(Object.keys(pluginInfo.tiddlers),function(title) {
+				changedShadowTiddlers[title] = false;
+			});
+		}
+	});
 	// Unregister any existing theme tiddlers
 	var unregisteredTiddlers = this.wiki.unregisterPluginTiddlers(this.pluginType);
 	// Register any new theme tiddlers
-	var registeredTiddlers = this.wiki.registerPluginTiddlers(this.pluginType,plugins,plugins[0] === "$:/languages/fr-FR");
+	var registeredTiddlers = this.wiki.registerPluginTiddlers(this.pluginType,plugins);
 	// Unpack the current theme tiddlers
-	this.wiki.unpackPluginTiddlers();
+	this.wiki.unpackPluginTiddlers(this.doDebug);
+	// Queue change events for the changed shadow tiddlers
+	$tw.utils.each(changedShadowTiddlers,function(status,title) {
+		self.wiki.enqueueTiddlerEvent(title,changedShadowTiddlers[title], true);
+	});
+
 	// Call the switch handler
 	if(this.onSwitch) {
 		this.onSwitch(plugins);

core/modules/widgets/testcase.js

@@ -69,11 +69,24 @@ TestCaseWidget.prototype.render = function(parent,nextSibling) {
 	});
 	var jsonPayload = JSON.stringify(tiddlers);
 	this.testcaseWiki.addTiddlers(tiddlers);
+	// Suppress next tick dispatch for wiki change events
+	this.testcaseWiki.setDispatchMode(true);
 	// Unpack plugin tiddlers
 	this.testcaseWiki.readPluginInfo();
 	this.testcaseWiki.registerPluginTiddlers("plugin");
 	this.testcaseWiki.unpackPluginTiddlers();
 	this.testcaseWiki.addIndexersToWiki();
+	// Install the plugin change event handler
+	$tw.utils.installPluginChangeHandler(this.testcaseWiki);
+	// Install the language switcher
+	var languageSwitcher = new $tw.PluginSwitcher({
+		wiki: this.testcaseWiki,
+		pluginType: "language",
+		controllerTitle: "$:/language",
+		defaultPlugins: [
+			"$:/languages/en-GB"
+		]
+	});
 	// Generate a `transclusion` variable that depends on the values of the payload tiddlers so that the template can easily make unique state tiddlers
 	this.setVariable("transclusion",$tw.utils.hashString(jsonPayload));
 	// Generate a `payloadTiddlers` variable that contains the payload in JSON format
@@ -95,13 +108,20 @@ TestCaseWidget.prototype.render = function(parent,nextSibling) {
 			}
 		});
 		testcaseOutputWidget.render(testcaseOutputContainer);
+		// Install the wiki change event handler
+		this.testcaseWiki.addEventListener("change",function(changes) {
+			testcaseOutputWidget.refresh(changes,testcaseOutputContainer);
+		});
 	}
 	// Clear changes queue
 	this.testcaseWiki.clearTiddlerEventQueue();
 	// Run the actions if provided
 	if(this.testcaseWiki.tiddlerExists(this.testcaseTestActions)) {
 		testcaseOutputWidget.invokeActionString(this.testcaseWiki.getTiddlerText(this.testcaseTestActions));
-		testcaseOutputWidget.refresh(this.testcaseWiki.changedTiddlers,testcaseOutputContainer);
+		// Make sure all wiki events have been cleared
+		while(this.testcaseWiki.eventsTriggered) {
+			this.testcaseWiki.processOutstandingTiddlerEvents();
+		}
 	}
 	// Set up the test result variables
 	var testResult = "",
@@ -131,6 +151,8 @@ TestCaseWidget.prototype.render = function(parent,nextSibling) {
 		parentWidget: this
 	});
 	rootWidget.render(domNode);
+	// Re-enable next tick dispatch for wiki change events
+	this.testcaseWiki.setDispatchMode(false);
 	// Trap changes in the wiki and refresh the rendering
 	this.testcaseWiki.addEventListener("change",function(changes) {
 		rootWidget.refresh(changes,domNode);

core/ui/TestCases/DefaultTemplate.tid

@@ -103,7 +103,8 @@ code-body: yes
 -Description
 -Narrative
 -[[$:/temp/testcase/draft-title]]
--[has[plugin-type]]
+-[[$:/status/RequireReloadDueToPluginChange]]
+-[[$:/core]]
 -[prefix<tf.state>]
 -[prefix[$:/state/popup/export]]
 -[prefix[$:/HistoryList]]