1 files changed, 141 insertions, 4 deletions

diff --git a/services/gitdiff/gitdiff_test.go b/services/gitdiff/gitdiff_test.go
index 9826ece2dc..ad1d186e73 100644
--- a/services/gitdiff/gitdiff_test.go
+++ b/services/gitdiff/gitdiff_test.go
@@ -6,6 +6,7 @@
 package gitdiff
 
 import (
+	"encoding/json"
 	"fmt"
 	"html/template"
 	"strings"
@@ -14,11 +15,9 @@ import (
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/git"
 	"code.gitea.io/gitea/modules/setting"
-
-	"gopkg.in/ini.v1"
-
 	dmp "github.com/sergi/go-diff/diffmatchpatch"
 	"github.com/stretchr/testify/assert"
+	"gopkg.in/ini.v1"
 )
 
 func assertEqual(t *testing.T, s1 string, s2 template.HTML) {
@@ -77,7 +76,145 @@ func TestDiffToHTML(t *testing.T) {
 	}, DiffLineAdd))
 }
 
-func TestParsePatch(t *testing.T) {
+func TestParsePatch_singlefile(t *testing.T) {
+	type testcase struct {
+		name        string
+		gitdiff     string
+		wantErr     bool
+		addition    int
+		deletion    int
+		oldFilename string
+		filename    string
+	}
+
+	tests := []testcase{
+		{
+			name: "readme.md2readme.md",
+			gitdiff: `diff --git "a/README.md" "b/README.md"
+--- a/README.md
++++ b/README.md
+@@ -1,3 +1,6 @@
+ # gitea-github-migrator
++
++ Build Status
+- Latest Release
+ Docker Pulls
++ cut off
++ cut off
+`,
+			addition: 4,
+			deletion: 1,
+			filename: "README.md",
+		},
+		{
+			name: "A \\ B",
+			gitdiff: `diff --git "a/A \\ B" "b/A \\ B"
+--- "a/A \\ B"
++++ "b/A \\ B"
+@@ -1,3 +1,6 @@
+ # gitea-github-migrator
++
++ Build Status
+- Latest Release
+ Docker Pulls
++ cut off
++ cut off`,
+			addition: 4,
+			deletion: 1,
+			filename: "A \\ B",
+		},
+		{
+			name: "really weird filename",
+			gitdiff: `diff --git a/a b/file b/a a/file b/a b/file b/a a/file
+index d2186f1..f5c8ed2 100644
+--- a/a b/file b/a a/file	
++++ b/a b/file b/a a/file	
+@@ -1,3 +1,2 @@
+ Create a weird file.
+ 
+-and what does diff do here?
+\ No newline at end of file`,
+			addition:    0,
+			deletion:    1,
+			filename:    "a b/file b/a a/file",
+			oldFilename: "a b/file b/a a/file",
+		},
+		{
+			name: "delete file with blanks",
+			gitdiff: `diff --git a/file with blanks b/file with blanks
+deleted file mode 100644
+index 898651a..0000000
+--- a/file with blanks	
++++ /dev/null
+@@ -1,5 +0,0 @@
+-a blank file
+-
+-has a couple o line
+-
+-the 5th line is the last
+`,
+			addition: 0,
+			deletion: 5,
+			filename: "file with blanks",
+		},
+		{
+			name: "rename a—as",
+			gitdiff: `diff --git "a/\360\243\220\265b\342\200\240vs" "b/a\342\200\224as"
+similarity index 100%
+rename from "\360\243\220\265b\342\200\240vs"
+rename to "a\342\200\224as"
+`,
+			addition:    0,
+			deletion:    0,
+			oldFilename: "𣐵b†vs",
+			filename:    "a—as",
+		},
+		{
+			name: "rename with spaces",
+			gitdiff: `diff --git a/a b/file b/a a/file b/a b/a a/file b/b file
+similarity index 100%
+rename from a b/file b/a a/file
+rename to a b/a a/file b/b file
+`,
+			oldFilename: "a b/file b/a a/file",
+			filename:    "a b/a a/file b/b file",
+		},
+	}
+
+	for _, testcase := range tests {
+		t.Run(testcase.name, func(t *testing.T) {
+			got, err := ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, strings.NewReader(testcase.gitdiff))
+			if (err != nil) != testcase.wantErr {
+				t.Errorf("ParsePatch() error = %v, wantErr %v", err, testcase.wantErr)
+				return
+			}
+			gotMarshaled, _ := json.MarshalIndent(got, "  ", "  ")
+			if got.NumFiles != 1 {
+				t.Errorf("ParsePath() did not receive 1 file:\n%s", string(gotMarshaled))
+				return
+			}
+			if got.TotalAddition != testcase.addition {
+				t.Errorf("ParsePath() does not have correct totalAddition %d, wanted %d", got.TotalAddition, testcase.addition)
+			}
+			if got.TotalDeletion != testcase.deletion {
+				t.Errorf("ParsePath() did not have correct totalDeletion %d, wanted %d", got.TotalDeletion, testcase.deletion)
+			}
+			file := got.Files[0]
+			if file.Addition != testcase.addition {
+				t.Errorf("ParsePath() does not have correct file addition %d, wanted %d", file.Addition, testcase.addition)
+			}
+			if file.Deletion != testcase.deletion {
+				t.Errorf("ParsePath() did not have correct file deletion %d, wanted %d", file.Deletion, testcase.deletion)
+			}
+			if file.OldName != testcase.oldFilename {
+				t.Errorf("ParsePath() did not have correct OldName %s, wanted %s", file.OldName, testcase.oldFilename)
+			}
+			if file.Name != testcase.filename {
+				t.Errorf("ParsePath() did not have correct Name %s, wanted %s", file.Name, testcase.filename)
+			}
+		})
+	}
+
 	var diff = `diff --git "a/README.md" "b/README.md"
 --- a/README.md
 +++ b/README.md