my computer is about to die!!!

helper/helper_test.go

@@ -0,0 +1,21 @@
+package helper
+
+import (
+	"testing"
+)
+
+func TestJoinAsError(t *testing.T) {
+	var errs []string = nil
+	if JoinAsError(errs) != nil {
+		t.Error("expected no errors")
+	}
+	errs = make([]string, 0)
+	if JoinAsError(errs) != nil {
+		t.Error("expected no errors")
+	}
+
+	errs = []string{"a", "b"}
+	if JoinAsError(errs).Error() != "a\nb" {
+		t.Error("bad error")
+	}
+}