fix tests for 'stylesTarget'

test/js/samples/collapses-text-around-comments/expected.js

@@ -2,6 +2,7 @@
 import {
 	SvelteComponent,
 	append,
+	append_styles,
 	attr,
 	detach,
 	element,
@@ -13,11 +14,8 @@ import {
 	text
 } from "svelte/internal";
 
-function add_css() {
-	var style = element("style");
-	style.id = "svelte-1a7i8ec-style";
-	style.textContent = "p.svelte-1a7i8ec{color:red}";
-	append(document.head, style);
+function add_css(options) {
+	append_styles(options, "1a7i8ec", "p.svelte-1a7i8ec{color:red}");
 }
 
 function create_fragment(ctx) {
@@ -58,7 +56,7 @@ function instance($$self, $$props, $$invalidate) {
 class Component extends SvelteComponent {
 	constructor(options) {
 		super();
-		if (!document.getElementById("svelte-1a7i8ec-style")) add_css();
+		add_css(options);
 		init(this, options, instance, create_fragment, safe_not_equal, { foo: 0 });
 	}
 }

test/js/samples/css-media-query/expected.js

@@ -1,7 +1,7 @@
 /* generated by Svelte vX.Y.Z */
 import {
 	SvelteComponent,
-	append,
+	append_styles,
 	attr,
 	detach,
 	element,
@@ -11,11 +11,8 @@ import {
 	safe_not_equal
 } from "svelte/internal";
 
-function add_css() {
-	var style = element("style");
-	style.id = "svelte-1slhpfn-style";
-	style.textContent = "@media(min-width: 1px){div.svelte-1slhpfn{color:red}}";
-	append(document.head, style);
+function add_css(options) {
+	append_styles(options, "1slhpfn", "@media(min-width: 1px){div.svelte-1slhpfn{color:red}}");
 }
 
 function create_fragment(ctx) {
@@ -41,7 +38,7 @@ function create_fragment(ctx) {
 class Component extends SvelteComponent {
 	constructor(options) {
 		super();
-		if (!document.getElementById("svelte-1slhpfn-style")) add_css();
+		add_css(options);
 		init(this, options, null, create_fragment, safe_not_equal, {});
 	}
 }

test/sourcemaps/samples/compile-option-dev/test.js

@@ -4,8 +4,8 @@ const b64dec = s => Buffer.from(s, 'base64').toString();
 
 export async function test({ assert, css,  js }) {
 
-    // We check that the css source map embedded in the js is accurate
-    const match = js.code.match(/\tstyle\.textContent = "(.*?)(?:\\n\/\*# sourceMappingURL=data:(.*?);charset=(.*?);base64,(.*?) \*\/)?";\n/);
+	// We check that the css source map embedded in the js is accurate
+	const match = js.code.match(/\tappend_styles\(options, ".{6}", "(.*?)(?:\\n\/\*# sourceMappingURL=data:(.*?);charset=(.*?);base64,(.*?) \*\/)?"\);\n/);
 	assert.notEqual(match, null);
 
 	const [mimeType, encoding, cssMapBase64] = match.slice(2);