From 9ea397861feeefcce9f18947e10aa6cc155ec459 Mon Sep 17 00:00:00 2001
From: Ryan Dahl <ry@tinyclouds.org>
Date: Tue, 22 May 2018 12:43:20 -0400
Subject: Fix LoadOutputCodeCache

---
 deno_dir_test.go | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 deno_dir_test.go

(limited to 'deno_dir_test.go')

diff --git a/deno_dir_test.go b/deno_dir_test.go
new file mode 100644
index 000000000..fa3d68aed
--- /dev/null
+++ b/deno_dir_test.go
@@ -0,0 +1,46 @@
+package main
+
+import (
+	"io/ioutil"
+	"testing"
+)
+
+func SetCompileDirForTest(prefix string) {
+	dir, err := ioutil.TempDir("", prefix)
+	if err != nil {
+		panic(err)
+	}
+	CompileDir = dir
+}
+
+func TestLoadOutputCodeCache(t *testing.T) {
+	SetCompileDirForTest("TestLoadOutputCodeCache")
+
+	filename := "Hello.ts"
+	sourceCodeBuf := []byte("1+2")
+
+	cacheFn := CacheFileName(filename, sourceCodeBuf)
+
+	outputCode, err := LoadOutputCodeCache(filename, sourceCodeBuf)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	if outputCode != "" {
+		t.Fatalf("Expected empty outputCode but got <<%s>>", outputCode)
+	}
+
+	// Now let's write to the cache file
+	err = ioutil.WriteFile(cacheFn, []byte("blah"), 0700)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+
+	// Try it again.
+	outputCode, err = LoadOutputCodeCache(filename, sourceCodeBuf)
+	if err != nil {
+		t.Fatalf(err.Error())
+	}
+	if outputCode != "blah" {
+		t.Fatalf("Bad outputCode but got <<%s>>", outputCode)
+	}
+}
-- 
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