tests: add and use testutil package to reduce duplication

[safcm/safcm.git] / testutil / testutil.go

diff --git a/testutil/testutil.go b/testutil/testutil.go
new file mode 100644 (file)
index 0000000..8d2e86b
--- /dev/null
+++ b/testutil/testutil.go
@@ -0,0 +1,42 @@
+// Utility functions useful for tests
+
+// Copyright (C) 2021  Simon Ruderich
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package testutil
+
+import (
+       "fmt"
+       "reflect"
+       "testing"
+
+       "github.com/google/go-cmp/cmp"
+)
+
+func AssertEqual(t *testing.T, name string, act, exp interface{}) {
+       if !reflect.DeepEqual(act, exp) {
+               t.Errorf("%s: %s", name, cmp.Diff(exp, act))
+       }
+}
+
+func AssertErrorEqual(t *testing.T, name string, act, exp error) {
+       // Ugly but the simplest way to compare errors (including nil)
+       actStr := fmt.Sprintf("%s", act)
+       expStr := fmt.Sprintf("%s", exp)
+       if actStr != expStr {
+               t.Errorf("err = %s (%#v), want %s (%#v)",
+                       actStr, act, expStr, exp)
+       }
+}