test: Move setEnv & unsetEnv functions

engine/engine_test.go

@@ -0,0 +1,18 @@
+package engine
+
+import (
+	"os"
+	"testing"
+)
+
+func setEnv(t *testing.T, key, value string) {
+	if err := os.Setenv(key, value); err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
+}
+
+func unsetEnv(t *testing.T, key string) {
+	if err := os.Unsetenv(key); err != nil {
+		t.Fatalf("unexpected error: %s", err)
+	}
+}

engine/id_test.go

@@ -68,18 +68,6 @@ func TestWorkingDirectoryWithUndefinedEnv(t *testing.T) {
 
 }
 
-func setEnv(t *testing.T, key, value string) {
-	if err := os.Setenv(key, value); err != nil {
-		t.Fatalf("unexpected error: %s", err)
-	}
-}
-
-func unsetEnv(t *testing.T, key string) {
-	if err := os.Unsetenv(key); err != nil {
-		t.Fatalf("unexpected error: %s", err)
-	}
-}
-
 func checkIDMatch(t *testing.T, key string, e int, callback func() (int, error)) {
 
 	setEnv(t, key, fmt.Sprint(e))