From cc7b28293fde630bd7a5c5a558f49d6f809d7474 Mon Sep 17 00:00:00 2001
From: Phillip Johnsen <johphi@gmail.com>
Date: Mon, 21 Oct 2019 14:04:37 +0200
Subject: [PATCH] Add CI test verifying Mustache works with Deno

To ensure the ES module and source exposed by this package is compatible
with Deno going forward.

Added benefit is we get some sanity checks of the source code for free
due to Deno's built-in TypeScript compiler getting angry if it sees
things that does not make sense, in terms of missing function arguments
and so on.
---
 .github/workflows/verify.yml     | 13 ++++++++++++-
 test/module-systems/deno-test.ts | 17 +++++++++++++++++
 2 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 test/module-systems/deno-test.ts

diff --git a/.github/workflows/verify.yml b/.github/workflows/verify.yml
index f6d3789..42e80d9 100644
--- a/.github/workflows/verify.yml
+++ b/.github/workflows/verify.yml
@@ -2,7 +2,7 @@ name: Verify changes
 
 on: [push, pull_request]
 
-jobs:       
+jobs:
   tests:
     runs-on: ubuntu-latest
 
@@ -71,3 +71,14 @@ jobs:
         run: |
           npm ci
           npx mocha test/module-systems/browser-test.js
+
+  deno-usage:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+      - uses: denolib/setup-deno@v1
+        with:
+          deno-version: 'v0.23.0'
+      - run: deno --version
+      - run: deno test --allow-net=deno.land test/module-systems/deno-test.ts
diff --git a/test/module-systems/deno-test.ts b/test/module-systems/deno-test.ts
new file mode 100644
index 0000000..9325ae0
--- /dev/null
+++ b/test/module-systems/deno-test.ts
@@ -0,0 +1,17 @@
+import { test } from "https://deno.land/std@v0.21.0/testing/mod.ts";
+import { assertEquals } from "https://deno.land/std@v0.21.0/testing/asserts.ts";
+import mustache from "../../mustache.mjs";
+
+const view = {
+  title: "Joe",
+  calc: function() {
+    return 2 + 4;
+  }
+};
+
+test(function canUseMustache() {
+  assertEquals(
+    mustache.render("{{title}} spends {{calc}}", view),
+    "Joe spends 6"
+  );
+});