From 3bc2342303973525addf3714d3daadd3d308efec Mon Sep 17 00:00:00 2001
From: Ryan Dahl <ry@tinyclouds.org>
Date: Thu, 24 May 2018 10:34:05 -0400
Subject: [PATCH] Add -root flag so tests can write artifacts to tmp

---
 deno_dir.go         |  6 +++++-
 integration_test.go | 11 ++++++++---
 main.go             |  2 ++
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/deno_dir.go b/deno_dir.go
index 5db85cf41c..49d1e06960 100644
--- a/deno_dir.go
+++ b/deno_dir.go
@@ -90,7 +90,11 @@ func UserHomeDir() string {
 }
 
 func createDirs() {
-	DenoDir = path.Join(UserHomeDir(), ".deno")
+	if *flagRoot == "" {
+		DenoDir = path.Join(UserHomeDir(), ".deno")
+	} else {
+		DenoDir = *flagRoot
+	}
 	CacheDir = path.Join(DenoDir, "cache")
 	err := os.MkdirAll(CacheDir, 0700)
 	check(err)
diff --git a/integration_test.go b/integration_test.go
index a646c4553b..4c525544c4 100644
--- a/integration_test.go
+++ b/integration_test.go
@@ -45,7 +45,7 @@ func listTestFiles() []string {
 	return out
 }
 
-func CheckOutput(t *testing.T, outFile string, denoFn string) {
+func checkOutput(t *testing.T, outFile string, denoFn string) {
 	outFile = path.Join("testdata", outFile)
 	jsFile := strings.TrimSuffix(outFile, ".out")
 
@@ -54,7 +54,12 @@ func CheckOutput(t *testing.T, outFile string, denoFn string) {
 		t.Fatal(err.Error())
 	}
 
-	cmd := exec.Command(denoFn, jsFile, "--reload")
+	dir, err := ioutil.TempDir("", "TestIntegration")
+	if err != nil {
+		panic(err)
+	}
+
+	cmd := exec.Command(denoFn, "--root="+dir, jsFile)
 	var out bytes.Buffer
 	cmd.Stdout = &out
 	err = cmd.Run()
@@ -80,7 +85,7 @@ func TestIntegration(t *testing.T) {
 	outFiles := listTestFiles()
 	for _, outFile := range outFiles {
 		t.Run(outFile, func(t *testing.T) {
-			CheckOutput(t, outFile, denoFn)
+			checkOutput(t, outFile, denoFn)
 		})
 	}
 }
diff --git a/main.go b/main.go
index d557ab2045..c7b92f17ed 100644
--- a/main.go
+++ b/main.go
@@ -13,6 +13,8 @@ var flagReload = flag.Bool("reload", false, "Reload cached remote source code.")
 var flagV8Options = flag.Bool("v8-options", false, "Print V8 command line options.")
 var flagDebug = flag.Bool("debug", false, "Enable debug output.")
 var flagGoProf = flag.String("goprof", "", "Write golang cpu profile to file.")
+var flagRoot = flag.String("root", "",
+	"Where to cache compilation artifacts. Default: ~/.deno")
 
 func stringAsset(path string) string {
 	data, err := Asset("dist/" + path)