Pass template context to the Markdown engine

src/Engines/Markdown.js

@@ -69,7 +69,7 @@ class Markdown extends TemplateEngine {
       } else {
         return async function(data) {
           let preTemplateEngineRender = await fn(data);
-          let finishedRender = mdlib.render(preTemplateEngineRender);
+          let finishedRender = mdlib.render(preTemplateEngineRender, data);
           return finishedRender;
         };
       }
@@ -79,9 +79,8 @@ class Markdown extends TemplateEngine {
           return str;
         };
       } else {
-        return function() {
-          // throw away data if preTemplateEngine is falsy
-          return mdlib.render(str);
+        return function(data) {
+          return mdlib.render(str, data);
         };
       }
     }

test/TemplateRenderMarkdownPluginTest.js

@@ -0,0 +1,43 @@
+import test from "ava";
+import TemplateRender from "../src/TemplateRender";
+import md from "markdown-it";
+
+const createTestMarkdownPlugin = () => {
+  const plugin = md => {
+    md.core.ruler.after("inline", "replace-link", function(state) {
+      plugin.environment = state.env;
+      return false;
+    });
+  };
+  plugin.environment = {};
+  return plugin;
+};
+
+test("Markdown Render: with HTML prerender, sends context data to the markdown library", async t => {
+  let tr = new TemplateRender("md");
+
+  const plugin = createTestMarkdownPlugin();
+  let mdLib = md().use(plugin);
+  tr.engine.setLibrary(mdLib);
+
+  const data = { some: "data" };
+
+  let fn = await tr.getCompiledTemplate("[link text](http://link.com)");
+  let result = await fn(data);
+  t.deepEqual(plugin.environment, data);
+});
+
+test("Markdown Render: without HTML prerender, sends context data to the markdown library", async t => {
+  let tr = new TemplateRender("md");
+
+  const plugin = createTestMarkdownPlugin();
+  let mdLib = md().use(plugin);
+  tr.engine.setLibrary(mdLib);
+  tr.setHtmlEngine(false);
+
+  const data = { some: "data" };
+
+  let fn = await tr.getCompiledTemplate("[link text](http://link.com)");
+  let result = await fn(data);
+  t.deepEqual(plugin.environment, data);
+});