Moving removal of \r, adding tests to verify all cases

fixes #59

Author: rmcginty

src/HighlightPairedShortcode.js

@@ -16,11 +16,11 @@ module.exports = function (content, language, highlightNumbers, options = {}) {
   if( language === "text" ) {
     highlightedContent = content;
   } else {
-    highlightedContent = Prism.highlight(content.replace(/\r/g, ""), PrismLoader(language), language);
+    highlightedContent = Prism.highlight(content, PrismLoader(language), language);
   }
 
   let group = new HighlightLinesGroup(highlightNumbers);
-  let lines = highlightedContent.split("\n");
+  let lines = highlightedContent.split(/\r?\n/);
   lines = lines.map(function(line, j) {
     if(options.alwaysWrapLineHighlights || highlightNumbers) {
       let lineContent = group.getLineMarkup(j, line);

test/HighlightPairedShortcodeTest.js

@@ -6,6 +6,26 @@ test("Base", async t => {
 alert();`, "js", "", { alwaysWrapLineHighlights: true }), `<pre class="language-js"><code class="language-js"><span class="highlight-line"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span><br><span class="highlight-line"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span></code></pre>`);
 });
 
+test("Base with LF EOL, always wrap highlights", async t => {
+  t.is(await HighlightPairedShortcode('alert();\nalert();', 
+"js", "", { alwaysWrapLineHighlights: true }), `<pre class="language-js"><code class="language-js"><span class="highlight-line"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span><br><span class="highlight-line"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span></code></pre>`);
+});
+
+test("Base with LF EOL, no wrap highlights", async t => {
+  t.is(await HighlightPairedShortcode('alert();\nalert();', 
+"js", "", { alwaysWrapLineHighlights: false }), `<pre class="language-js"><code class="language-js"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span><br><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></code></pre>`);
+});
+
+test("Base with CRLF EOL, always wrap highlights", async t => {
+  t.is(await HighlightPairedShortcode('alert();\r\nalert();', 
+"js", "", { alwaysWrapLineHighlights: true }), `<pre class="language-js"><code class="language-js"><span class="highlight-line"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span><br><span class="highlight-line"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span></code></pre>`);
+});
+
+test("Base with CRLF EOL, no wrap highlights", async t => {
+  t.is(await HighlightPairedShortcode('alert();\r\nalert();', 
+"js", "", { alwaysWrapLineHighlights: false }), `<pre class="language-js"><code class="language-js"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span><br><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></code></pre>`);
+});
+
 test("Base with custom attributes", async t => {
   t.is(await HighlightPairedShortcode(`alert();
 alert();`, "js", "", { alwaysWrapLineHighlights: true, preAttributes: { tabindex: 0, 'data-testid': 'code' } }), `<pre class="language-js" tabindex="0" data-testid="code"><code class="language-js"><span class="highlight-line"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span><br><span class="highlight-line"><span class="token function">alert</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span></span></code></pre>`);