Abstract hash function usage (#28138)

Refactor Hash interfaces and centralize hash function. This will allow
easier introduction of different hash function later on.

This forms the "no-op" part of the SHA256 enablement patch.

1 files changed, 21 insertions, 0 deletions

diff --git a/modules/git/object_id_test.go b/modules/git/object_id_test.go
new file mode 100644
index 0000000000..c78a215755
--- /dev/null
+++ b/modules/git/object_id_test.go
@@ -0,0 +1,21 @@
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package git
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestIsValidSHAPattern(t *testing.T) {
+	h := NewSha1().Type()
+	assert.True(t, h.IsValid("fee1"))
+	assert.True(t, h.IsValid("abc000"))
+	assert.True(t, h.IsValid("9023902390239023902390239023902390239023"))
+	assert.False(t, h.IsValid("90239023902390239023902390239023902390239023"))
+	assert.False(t, h.IsValid("abc"))
+	assert.False(t, h.IsValid("123g"))
+	assert.False(t, h.IsValid("some random text"))
+}