Don't have data widget rendering its own JSON

Making the data widget render its raw JSON (introduced in 683ec33004) was a bad idea as it messes up the innerwiki use of the data widget. Instead we use the testcase widget with a special template to render the raw JSON of the payload of a testcase, thus giving us a way to test the data widget

core/modules/widgets/data.js

@@ -31,12 +31,7 @@ DataWidget.prototype.render = function(parent,nextSibling) {
 	this.parentDomNode = parent;
 	this.computeAttributes();
 	this.execute();
-	var domNode = this.document.createTextNode("");
-	parent.insertBefore(domNode,nextSibling);
 	this.renderChildren(parent,nextSibling);
-	// Children must have been rendered before we can read the data values
-	domNode.textContent = JSON.stringify(this.readDataTiddlerValues());
-	this.domNodes.push(domNode);
 };
 
 /*

core/modules/widgets/testcase.js

@@ -57,11 +57,14 @@ TestCaseWidget.prototype.render = function(parent,nextSibling) {
 	}
 	loadTiddler("$:/core");
 	loadTiddler("$:/plugins/tiddlywiki/codemirror");
+	// Load the test case template
+	// loadTiddler(this.testcaseTemplate);
 	// Load tiddlers from child data widgets
 	var tiddlers = [];
 	this.findChildrenDataWidgets(this.contentRoot.children,"data",function(widget) {
 		Array.prototype.push.apply(tiddlers,widget.readDataTiddlerValues());
 	});
+	var jsonPayload = JSON.stringify(tiddlers);
 	this.testcaseWiki.addTiddlers(tiddlers);
 	// Unpack plugin tiddlers
 	this.testcaseWiki.readPluginInfo();
@@ -69,15 +72,9 @@ TestCaseWidget.prototype.render = function(parent,nextSibling) {
 	this.testcaseWiki.unpackPluginTiddlers();
 	this.testcaseWiki.addIndexersToWiki();
 	// 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",$tw.utils.hashString(this.testcaseWiki.getTiddlersAsJson("[all[tiddlers]]")));
-	// Generate a `testcaseInfo` variable that contains information about the subwiki in JSON format
-	var testcaseInfoData = {
-		tiddlers: {} // Hashmap of tiddler titles mapped to array of field names
-	};
-	this.testcaseWiki.each(function(tiddler,title) {
-		testcaseInfoData.tiddlers[title] = Object.keys(tiddler.fields);
-	});
-	this.setVariable("testcaseInfo",JSON.stringify(testcaseInfoData));
+	this.setVariable("transclusion",$tw.utils.hashString(jsonPayload));
+	// Generate a `payloadTiddlers` variable that contains the payload in JSON format
+	this.setVariable("payloadTiddlers",jsonPayload);
 	// Render the page root template of the subwiki
 	var rootWidget = this.testcaseWiki.makeTranscludeWidget(this.testcaseTemplate,{document: this.document, parseAsInline: false, parentWidget: this});
 	rootWidget.render(parent,nextSibling);

core/ui/TestCases/RawJSONTemplate.tid

@@ -0,0 +1,4 @@
+title: $:/core/ui/testcases/RawJSONTemplate
+
+\whitespace trim
+<$text text=<<payloadTiddlers>>/>

editions/test/tiddlers/tests/data/data-widget/ImportCompound.tid

@@ -9,7 +9,9 @@ text: Importing a compound payload tiddler and adding custom fields
 title: Output
 
 \whitespace trim
+<$testcase template="$:/core/ui/testcases/RawJSONTemplate">
 <$data $compound-tiddler="Compound" custom="Alpha"/>
+</$testcase>
 +
 title: Compound
 type: text/vnd.tiddlywiki-multiple
@@ -22,4 +24,4 @@ This is a payload tiddler from a compound tiddler
 +
 title: ExpectedResult
 
-<p>[{"title":"Payload Tiddler","tags":"Alpha Beta Gamma","text":"This is a payload tiddler from a compound tiddler","custom":"Alpha"}]</p>
+<p><div>[{"title":"Payload Tiddler","tags":"Alpha Beta Gamma","text":"This is a payload tiddler from a compound tiddler","custom":"Alpha"}]</div></p>

editions/test/tiddlers/tests/data/data-widget/ImportFilter.tid

@@ -9,7 +9,9 @@ text: Importing a payload filter and adding custom fields
 title: Output
 
 \whitespace trim
+<$testcase template="$:/core/ui/testcases/RawJSONTemplate">
 <$data $filter="[tag[Definitions]]" custom="Alpha"/>
+</$testcase>
 +
 title: HelloThere
 tags: Definitions
@@ -23,4 +25,4 @@ This is the tiddler AnotherDefinition
 +
 title: ExpectedResult
 
-<p>[{"title":"AnotherDefinition","tags":"Definitions","text":"This is the tiddler AnotherDefinition","custom":"Alpha"},{"title":"HelloThere","tags":"Definitions","text":"This is the tiddler HelloThere","custom":"Alpha"}]</p>
+<p><div>[{"title":"AnotherDefinition","tags":"Definitions","text":"This is the tiddler AnotherDefinition","custom":"Alpha"},{"title":"HelloThere","tags":"Definitions","text":"This is the tiddler HelloThere","custom":"Alpha"}]</div></p>

editions/test/tiddlers/tests/data/data-widget/ImportTiddler.tid

@@ -9,7 +9,9 @@ text: Importing a payload tiddler and adding custom fields
 title: Output
 
 \whitespace trim
+<$testcase template="$:/core/ui/testcases/RawJSONTemplate">
 <$data $tiddler="HelloThere" custom="Alpha"/>
+</$testcase>
 +
 title: HelloThere
 tags: Definitions
@@ -18,4 +20,4 @@ This is the tiddler HelloThere
 +
 title: ExpectedResult
 
-<p>[{"title":"HelloThere","tags":"Definitions","text":"This is the tiddler HelloThere","custom":"Alpha"}]</p>
+<p><div>[{"title":"HelloThere","tags":"Definitions","text":"This is the tiddler HelloThere","custom":"Alpha"}]</div></p>

editions/test/tiddlers/tests/data/data-widget/Simple.tid

@@ -9,8 +9,10 @@ text: Standalone data widget to create individual tiddlers
 title: Output
 
 \whitespace trim
+<$testcase template="$:/core/ui/testcases/RawJSONTemplate">
 <$data title="Epsilon" text="Theta"/>
+</$testcase>
 +
 title: ExpectedResult
 
-<p>[{"title":"Epsilon","text":"Theta"}]</p>
+<p><div>[{"title":"Epsilon","text":"Theta"}]</div></p>

plugins/tiddlywiki/jasmine/run-wiki-based-tests.js

@@ -24,7 +24,11 @@ describe("Wiki-based tests", function() {
 		var tiddler = $tw.wiki.getTiddler(title);
 		it(tiddler.fields.title + ": " + tiddler.fields.description, function() {
 			// Add our tiddlers
-			var wiki = new $tw.Wiki();
+			var wiki = new $tw.Wiki(),
+				coreTiddler = $tw.wiki.getTiddler("$:/core");
+			if(coreTiddler) {
+				wiki.addTiddler(coreTiddler);
+			}
 			wiki.addTiddlers(readMultipleTiddlersTiddler(title));
 			// Complain if we don't have the ouput and expected results
 			if(!wiki.tiddlerExists("Output")) {