From fa22b8fffc3fc7c5a1f88dd9f64ab12bac638e24 Mon Sep 17 00:00:00 2001
From: Marc Redemske <code@mgred.dev>
Date: Sat, 30 Dec 2023 01:23:04 +0100
Subject: [PATCH] examples: add example and test

---
 examples/BUILD.bazel          | 13 +++++++++++++
 examples/generate.bzl         | 10 ++++++++++
 examples/generate_message.txt |  1 +
 3 files changed, 24 insertions(+)
 create mode 100644 examples/generate.bzl
 create mode 100644 examples/generate_message.txt

diff --git a/examples/BUILD.bazel b/examples/BUILD.bazel
index 8e55a45..f5d9a04 100644
--- a/examples/BUILD.bazel
+++ b/examples/BUILD.bazel
@@ -1,6 +1,19 @@
+load("@bazel_skylib//rules:diff_test.bzl", "diff_test")
 load("//quickjs:qjs.bzl", "qjs_binary")
+load(":generate.bzl", "generate_message")
 
 qjs_binary(
     name = "hello_world",
     entry_point = ":hello_world.js",
 )
+
+generate_message(
+    name = "msg",
+    message = "Hello, World",
+)
+
+diff_test(
+    name = "generate_message_test",
+    file1 = ":msg",
+    file2 = ":generate_message.txt",
+)
diff --git a/examples/generate.bzl b/examples/generate.bzl
new file mode 100644
index 0000000..31446bd
--- /dev/null
+++ b/examples/generate.bzl
@@ -0,0 +1,10 @@
+"Example using @bzlparty_quickjs//:qjs in `genrule`"
+
+def generate_message(name, message):
+    "Generate a file with a given message"
+    native.genrule(
+        name = name,
+        outs = ["%s.out" % name],
+        cmd = "$(locations @bzlparty_quickjs//:qjs) --eval 'console.log(\"%s\")' > $(OUTS)" % message,
+        tools = ["@bzlparty_quickjs//:qjs"],
+    )
diff --git a/examples/generate_message.txt b/examples/generate_message.txt
new file mode 100644
index 0000000..3fa0d4b
--- /dev/null
+++ b/examples/generate_message.txt
@@ -0,0 +1 @@
+Hello, World