[test/util] Add ReadConf tests

libgin/util_test.go

@@ -1,9 +1,38 @@
 package libgin
 
 import (
+	"os"
 	"testing"
 )
 
+func Test_ReadConfDefault(t *testing.T) {
+	oskey := "test"
+	val := "tmp"
+	defval := "default"
+
+	testval := ReadConfDefault(oskey, defval)
+	if testval != defval {
+		t.Fatalf("Expected default value %q but got %q", defval, testval)
+	}
+
+	os.Setenv(oskey, val)
+	testval = ReadConfDefault(oskey, defval)
+	if testval != val {
+		t.Fatalf("Expected default value %q but got %q", val, testval)
+	}
+}
+
+func Test_ReadConf(t *testing.T) {
+	oskey := "test"
+	val := "tmp"
+	os.Setenv(oskey, val)
+
+	testval := ReadConf(oskey)
+	if val != testval {
+		t.Fatal("Could not read environment variable")
+	}
+}
+
 func Test_GetArchiveSize(t *testing.T) {
 	// URL is earliest archive with the new name format, so wont change.
 	// Older archives might be renamed to the new format soon.