cmd/go: convert TestBuildIDContainsArchModeEnv to the script framework

Part of converting all tests to script framework to improve
test parallelism.

Updates #36320
Updates #17751

Change-Id: I69c69809fb1698c8198ef3ea00103a9acb7b6ce7
Reviewed-on: https://go-review.googlesource.com/c/go/+/214387
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>

Author: matloob

src/cmd/go/go_test.go

@@ -2642,45 +2642,6 @@ func TestNeedVersion(t *testing.T) {
 	tg.grepStderr("compile", "does not match go tool version")
 }
 
-// Issue 9737: verify that GOARM and GO386 affect the computed build ID.
-func TestBuildIDContainsArchModeEnv(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping in short mode")
-	}
-
-	var tg *testgoData
-	testWith := func(before, after func()) func(*testing.T) {
-		return func(t *testing.T) {
-			tg = testgo(t)
-			defer tg.cleanup()
-			tg.tempFile("src/mycmd/x.go", `package main
-func main() {}`)
-			tg.setenv("GOPATH", tg.path("."))
-
-			tg.cd(tg.path("src/mycmd"))
-			tg.setenv("GOOS", "linux")
-			before()
-			tg.run("install", "mycmd")
-			after()
-			tg.wantStale("mycmd", "stale dependency", "should be stale after environment variable change")
-		}
-	}
-
-	t.Run("386", testWith(func() {
-		tg.setenv("GOARCH", "386")
-		tg.setenv("GO386", "387")
-	}, func() {
-		tg.setenv("GO386", "sse2")
-	}))
-
-	t.Run("arm", testWith(func() {
-		tg.setenv("GOARCH", "arm")
-		tg.setenv("GOARM", "5")
-	}, func() {
-		tg.setenv("GOARM", "7")
-	}))
-}
-
 func TestBuildmodePIE(t *testing.T) {
 	if testing.Short() && testenv.Builder() == "" {
 		t.Skipf("skipping in -short mode on non-builder")

src/cmd/go/testdata/script/build_cache_arch_mode.txt

@@ -0,0 +1,27 @@
+# Issue 9737: verify that GOARM and GO386 affect the computed build ID
+
+[short] skip
+
+# 386
+cd $GOPATH/src/mycmd
+env GOOS=linux
+env GOARCH=386
+env GO386=387
+go install mycmd
+env GO386=sse2
+stale mycmd
+
+# arm
+cd $GOPATH/src/mycmd
+env GOOS=linux
+env GOARCH=arm
+env GOARM=5
+go install mycmd
+env GOARM=7
+stale mycmd
+
+
+-- mycmd/x.go --
+package main
+
+func main() {}