fix: make test suite run on older git version (#8188)

Ref: forgejo/forgejo#8140, forgejo/forgejo#8144
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/8188
Reviewed-by: Michael Kriese <michael.kriese@gmx.de>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>

modules/git/git.go

@@ -38,6 +38,7 @@ var (
 	InvertedGitFlushEnv    bool // 2.43.1
 	SupportCheckAttrOnBare bool // >= 2.40
 	SupportGitMergeTree    bool // >= 2.38
+	SupportGrepMaxCount    bool // >= 2.38
 
 	HasSSHExecutable bool
 
@@ -191,6 +192,7 @@ func InitFull(ctx context.Context) (err error) {
 
 	InvertedGitFlushEnv = CheckGitVersionEqual("2.43.1") == nil
 	SupportGitMergeTree = CheckGitVersionAtLeast("2.38") == nil
+	SupportGrepMaxCount = CheckGitVersionAtLeast("2.38") == nil
 
 	if setting.LFS.StartServer {
 		if CheckGitVersionAtLeast("2.1.2") != nil {

modules/git/grep.go

@@ -98,8 +98,7 @@ func GrepSearch(ctx context.Context, repo *Repository, search string, opts GrepO
 
 	cmd.AddOptionValues("--context", fmt.Sprint(opts.ContextLineNumber))
 
-	// --max-count requires at least git 2.38
-	if CheckGitVersionAtLeast("2.38.0") == nil {
+	if SupportGrepMaxCount {
 		cmd.AddOptionValues("--max-count", fmt.Sprint(opts.MatchesPerFile))
 	} else {
 		log.Warn("git-grep: --max-count requires at least git 2.38")

modules/git/grep_test.go

@@ -59,48 +59,55 @@ func TestGrepSearch(t *testing.T) {
 		},
 	}, res)
 
-	res, err = GrepSearch(t.Context(), repo, "world", GrepOptions{MatchesPerFile: 1})
-	require.NoError(t, err)
-	assert.Equal(t, []*GrepResult{
-		{
-			Filename:          "i-am-a-python.p",
-			LineNumbers:       []int{1},
-			LineCodes:         []string{"## This is a simple file to do a hello world"},
-			HighlightedRanges: [][3]int{{0, 39, 44}},
-		},
-		{
-			Filename:          "java-hello/main.java",
-			LineNumbers:       []int{1},
-			LineCodes:         []string{"public class HelloWorld"},
-			HighlightedRanges: [][3]int{{0, 18, 23}},
-		},
-		{
-			Filename:          "main.vendor.java",
-			LineNumbers:       []int{1},
-			LineCodes:         []string{"public class HelloWorld"},
-			HighlightedRanges: [][3]int{{0, 18, 23}},
-		},
-		{
-			Filename:          "python-hello/hello.py",
-			LineNumbers:       []int{1},
-			LineCodes:         []string{"## This is a simple file to do a hello world"},
-			HighlightedRanges: [][3]int{{0, 39, 44}},
-		},
-	}, res)
+	t.Run("Max count", func(t *testing.T) {
+		if !SupportGrepMaxCount {
+			t.Skip("Skipping, git grep --max-count is not supported")
+			return
+		}
 
-	res, err = GrepSearch(t.Context(), repo, "world", GrepOptions{
-		MatchesPerFile: 1,
-		Filename:       "java-hello/",
+		res, err = GrepSearch(t.Context(), repo, "world", GrepOptions{MatchesPerFile: 1})
+		require.NoError(t, err)
+		assert.Equal(t, []*GrepResult{
+			{
+				Filename:          "i-am-a-python.p",
+				LineNumbers:       []int{1},
+				LineCodes:         []string{"## This is a simple file to do a hello world"},
+				HighlightedRanges: [][3]int{{0, 39, 44}},
+			},
+			{
+				Filename:          "java-hello/main.java",
+				LineNumbers:       []int{1},
+				LineCodes:         []string{"public class HelloWorld"},
+				HighlightedRanges: [][3]int{{0, 18, 23}},
+			},
+			{
+				Filename:          "main.vendor.java",
+				LineNumbers:       []int{1},
+				LineCodes:         []string{"public class HelloWorld"},
+				HighlightedRanges: [][3]int{{0, 18, 23}},
+			},
+			{
+				Filename:          "python-hello/hello.py",
+				LineNumbers:       []int{1},
+				LineCodes:         []string{"## This is a simple file to do a hello world"},
+				HighlightedRanges: [][3]int{{0, 39, 44}},
+			},
+		}, res)
+
+		res, err = GrepSearch(t.Context(), repo, "world", GrepOptions{
+			MatchesPerFile: 1,
+			Filename:       "java-hello/",
+		})
+		require.NoError(t, err)
+		assert.Equal(t, []*GrepResult{
+			{
+				Filename:          "java-hello/main.java",
+				LineNumbers:       []int{1},
+				LineCodes:         []string{"public class HelloWorld"},
+				HighlightedRanges: [][3]int{{0, 18, 23}},
+			},
+		}, res)
 	})
-	require.NoError(t, err)
-	assert.Equal(t, []*GrepResult{
-		{
-			Filename:          "java-hello/main.java",
-			LineNumbers:       []int{1},
-			LineCodes:         []string{"public class HelloWorld"},
-			HighlightedRanges: [][3]int{{0, 18, 23}},
-		},
-	}, res)
 
 	res, err = GrepSearch(t.Context(), repo, "no-such-content", GrepOptions{})
 	require.NoError(t, err)

modules/git/repo_attribute_test.go

@@ -251,10 +251,14 @@ func TestGitAttributeCheckerError(t *testing.T) {
 		cancel()
 
 		ac, err := gitRepo.GitAttributeChecker("8fee858da5796dfb37704761701bb8e800ad9ef3", "linguist-language")
-		require.NoError(t, err)
+		if SupportCheckAttrOnBare {
+			require.NoError(t, err)
 
-		_, err = ac.CheckPath("i-am-a-python.p")
-		require.Error(t, err)
+			_, err = ac.CheckPath("i-am-a-python.p")
+			require.Error(t, err)
+		} else {
+			require.Error(t, err)
+		}
 	})
 
 	t.Run("Cancelled/DuringRun", func(t *testing.T) {

tests/integration/patch_status_test.go

@@ -32,10 +32,15 @@ func TestPatchStatus(t *testing.T) {
 		user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
 		session := loginUser(t, user2.Name)
 
+		var objectFormat optional.Option[string]
+		if git.SupportHashSha256 {
+			objectFormat = optional.Some("sha256")
+		}
+
 		repo, _, f := tests.CreateDeclarativeRepoWithOptions(t, user2, tests.DeclarativeRepoOptions{
 			AutoInit:     optional.Some(true),
 			EnabledUnits: optional.Some([]unit_model.Type{unit_model.TypeCode}),
-			ObjectFormat: optional.Some("sha256"),
+			ObjectFormat: objectFormat,
 			Files: optional.Some([]*files_service.ChangeRepoFile{
 				{
 					Operation:     "create",

tests/integration/repo_signed_tag_test.go

@@ -25,6 +25,10 @@ import (
 )
 
 func TestRepoSSHSignedTags(t *testing.T) {
+	if git.CheckGitVersionAtLeast("2.34") != nil {
+		t.Skip("Skipping, does not support SSH signing")
+		return
+	}
 	defer tests.PrepareTestEnv(t)()
 
 	// Preparations

tests/integration/signing_git_test.go

@@ -42,6 +42,10 @@ func TestInstanceSigning(t *testing.T) {
 		defer test.MockProtect(&setting.Repository.Signing.CRUDActions)()
 
 		t.Run("SSH", func(t *testing.T) {
+			if git.CheckGitVersionAtLeast("2.34") != nil {
+				t.Skip("Skipping, does not support git SSH signing")
+				return
+			}
 			defer tests.PrintCurrentTest(t)()
 
 			pubKeyContent, err := os.ReadFile("tests/integration/ssh-signing-key.pub")