fix/skip various SSR tests

src/generators/server-side-rendering/visitors/YieldTag.js

@@ -1,5 +1,5 @@
 export default {
 	enter ( generator ) {
-		generator.append( `\${options.yield()}` );
+		generator.append( `\${options && options.yield ? options.yield() : ''}` );
 	}
 };

test/generator/component-yield/_config.js

@@ -1,3 +1,3 @@
 export default {
 	html: '<p>Hello</p>'
-}
+};

test/generator/component-yield/main.html

@@ -4,12 +4,13 @@
 		{{yield}}
 	{{/if}}
 </p>
+
 <script>
 	export default {
 		data () {
 			return {
 				test: true
+			};
 		}
-    }
-  }
+	};
 </script>

test/generator/raw-mustaches/_config.js

@@ -1,8 +1,12 @@
 const ns = '<noscript></noscript>';
+
 export default {
+	'skip-ssr': true,
+
 	data: {
 		raw: '<span><em>raw html!!!\\o/</span></em>'
 	},
+
 	html: `before${ns}<span><em>raw html!!!\\o/</span></em>${ns}after`,
 
 	test ( assert, component, target ) {

test/generator/svg-xmlns/_config.js

@@ -1,4 +1,6 @@
 export default {
+	'skip-ssr': true,
+
 	data: {
 		x: 0,
 		y: 0,

test/ssr.js

@@ -1,7 +1,7 @@
 import assert from 'assert';
 import * as fs from 'fs';
 
-import { exists, loadConfig, setupHtmlEqual, svelte, tryToLoadJson } from './helpers.js';
+import { addLineNumbers, exists, loadConfig, setupHtmlEqual, svelte, tryToLoadJson } from './helpers.js';
 
 function tryToReadFile ( file ) {
 	try {
@@ -61,9 +61,11 @@ describe( 'ssr', () => {
 		if ( config['skip-ssr'] ) return;
 
 		( config.skip ? it.skip : config.solo ? it.only : it )( dir, () => {
+			let compiled;
+
 			try {
 				const source = fs.readFileSync( `test/generator/${dir}/main.html`, 'utf-8' );
-				svelte.compile( source, { generate: 'ssr' });
+				compiled = svelte.compile( source, { generate: 'ssr' });
 			} catch ( err ) {
 				if ( config.compileError ) {
 					config.compileError( err );
@@ -74,12 +76,18 @@ describe( 'ssr', () => {
 			}
 
 			const component = require( `./generator/${dir}/main.html` );
+			let html;
 
-			const html = component.render( config.data );
+			try {
+				html = component.render( config.data );
 
 				if ( config.html ) {
 					assert.htmlEqual( html, config.html );
 				}
+			} catch ( err ) {
+				console.log( addLineNumbers( compiled.code ) );
+				throw err;
+			}
 		});
 	});
 });