Test Integration: hardcode binary tmp for darwin (dapr#7664)

On Darwin (MacOS), `os.TempDir()` nicely returns a truly ephemeral
process directory is `/var/folders/...` however in order to reap the
benefits of Go cache magic in integration tests we need a slightly more
permanent directory, i.e. `/tmp`. This directory will persist across
integration test runs and speed up the test execution boot times from
s to ms.

Signed-off-by: joshvanl <[email protected]>

Author: JoshVanL

tests/integration/framework/binary/binary.go

@@ -60,7 +60,13 @@ func Build(t *testing.T, name string) {
 
 		// Use a consistent temp dir for the binary so that the binary is cached on
 		// subsequent runs.
-		binPath := filepath.Join(os.TempDir(), "dapr_integration_tests/"+name)
+		var tmpdir string
+		if runtime.GOOS == "darwin" {
+			tmpdir = "/tmp"
+		} else {
+			tmpdir = os.TempDir()
+		}
+		binPath := filepath.Join(tmpdir, "dapr_integration_tests/"+name)
 		if runtime.GOOS == "windows" {
 			binPath += ".exe"
 		}