add error pkg

internal/errors/unknown_test.go

@@ -0,0 +1,33 @@
+package errors_test
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	caos_errs "github.com/caos/utils/errors"
+)
+
+func TestUnknownError(t *testing.T) {
+	var err interface{}
+	err = new(caos_errs.UnknownError)
+	_, ok := err.(caos_errs.Unknown)
+	assert.True(t, ok)
+}
+
+func TestThrowUnknownf(t *testing.T) {
+	err := caos_errs.ThrowUnknownf(nil, "id", "msg")
+	_, ok := err.(*caos_errs.UnknownError)
+	assert.True(t, ok)
+}
+
+func TestIsUnknown(t *testing.T) {
+	err := caos_errs.ThrowUnknown(nil, "id", "msg")
+	ok := caos_errs.IsUnknown(err)
+	assert.True(t, ok)
+
+	err = errors.New("I am found!")
+	ok = caos_errs.IsUnknown(err)
+	assert.False(t, ok)
+}