From a4b0c0edc55dbc3659f4b89fd8e56abad682fbc0 Mon Sep 17 00:00:00 2001
From: Lucas Hinderberger <git@lucas-hinderberger.de>
Date: Sat, 24 Feb 2024 00:06:53 +0100
Subject: [PATCH] Fixes #2452 - Skipping SHA256 tests if unsupported

The test suite was broken e.g. on Debian 12 due to requiring a very
recent version of Git installed on the system. This commit skips SHA256
tests in the git module, if a Git version older than 2.42 or gogit is used.
---
 modules/git/blame_sha256_test.go  |  2 ++
 modules/git/commit_sha256_test.go | 14 ++++++++++++++
 modules/git/utils_test.go         | 16 ++++++++++++++++
 3 files changed, 32 insertions(+)
 create mode 100644 modules/git/utils_test.go

diff --git a/modules/git/blame_sha256_test.go b/modules/git/blame_sha256_test.go
index 01de0454a..92f8b5b02 100644
--- a/modules/git/blame_sha256_test.go
+++ b/modules/git/blame_sha256_test.go
@@ -11,6 +11,8 @@ import (
 )
 
 func TestReadingBlameOutputSha256(t *testing.T) {
+	skipIfSHA256NotSupported(t)
+
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
diff --git a/modules/git/commit_sha256_test.go b/modules/git/commit_sha256_test.go
index 82112cb40..916169f4e 100644
--- a/modules/git/commit_sha256_test.go
+++ b/modules/git/commit_sha256_test.go
@@ -14,6 +14,8 @@ import (
 )
 
 func TestCommitsCountSha256(t *testing.T) {
+	skipIfSHA256NotSupported(t)
+
 	bareRepo1Path := filepath.Join(testReposDir, "repo1_bare_sha256")
 
 	commitsCount, err := CommitsCount(DefaultContext,
@@ -27,6 +29,8 @@ func TestCommitsCountSha256(t *testing.T) {
 }
 
 func TestCommitsCountWithoutBaseSha256(t *testing.T) {
+	skipIfSHA256NotSupported(t)
+
 	bareRepo1Path := filepath.Join(testReposDir, "repo1_bare_sha256")
 
 	commitsCount, err := CommitsCount(DefaultContext,
@@ -41,6 +45,8 @@ func TestCommitsCountWithoutBaseSha256(t *testing.T) {
 }
 
 func TestGetFullCommitIDSha256(t *testing.T) {
+	skipIfSHA256NotSupported(t)
+
 	bareRepo1Path := filepath.Join(testReposDir, "repo1_bare_sha256")
 
 	id, err := GetFullCommitID(DefaultContext, bareRepo1Path, "f004f4")
@@ -49,6 +55,8 @@ func TestGetFullCommitIDSha256(t *testing.T) {
 }
 
 func TestGetFullCommitIDErrorSha256(t *testing.T) {
+	skipIfSHA256NotSupported(t)
+
 	bareRepo1Path := filepath.Join(testReposDir, "repo1_bare_sha256")
 
 	id, err := GetFullCommitID(DefaultContext, bareRepo1Path, "unknown")
@@ -59,6 +67,8 @@ func TestGetFullCommitIDErrorSha256(t *testing.T) {
 }
 
 func TestCommitFromReaderSha256(t *testing.T) {
+	skipIfSHA256NotSupported(t)
+
 	commitString := `9433b2a62b964c17a4485ae180f45f595d3e69d31b786087775e28c6b6399df0 commit 1114
 tree e7f9e96dd79c09b078cac8b303a7d3b9d65ff9b734e86060a4d20409fd379f9e
 parent 26e9ccc29fad747e9c5d9f4c9ddeb7eff61cc45ef6a8dc258cbeb181afc055e8
@@ -131,6 +141,8 @@ signed commit`, commitFromReader.Signature.Payload)
 }
 
 func TestHasPreviousCommitSha256(t *testing.T) {
+	skipIfSHA256NotSupported(t)
+
 	bareRepo1Path := filepath.Join(testReposDir, "repo1_bare_sha256")
 
 	repo, err := openRepositoryWithDefaultContext(bareRepo1Path)
@@ -159,6 +171,8 @@ func TestHasPreviousCommitSha256(t *testing.T) {
 }
 
 func TestGetCommitFileStatusMergesSha256(t *testing.T) {
+	skipIfSHA256NotSupported(t)
+
 	bareRepo1Path := filepath.Join(testReposDir, "repo6_merge_sha256")
 
 	commitFileStatus, err := GetCommitFileStatus(DefaultContext, bareRepo1Path, "d2e5609f630dd8db500f5298d05d16def282412e3e66ed68cc7d0833b29129a1")
diff --git a/modules/git/utils_test.go b/modules/git/utils_test.go
new file mode 100644
index 000000000..3a05b6a29
--- /dev/null
+++ b/modules/git/utils_test.go
@@ -0,0 +1,16 @@
+// Copyright 2024 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package git
+
+import "testing"
+
+// This file contains utility functions that are used across multiple tests,
+// but not in production code.
+
+func skipIfSHA256NotSupported(t *testing.T) {
+	if isGogit || CheckGitVersionAtLeast("2.42") != nil {
+		t.Skip("skipping because installed Git version doesn't support SHA256")
+	}
+}
+