Function TestUpdateHunkHeader

internal/git/patch_test.go:151–222

(t *testing.T)

}

func TestUpdateHunkHeader(t *testing.T) {
	repo := &Repository{}

	tests := []struct {
		name           string
		hunk           *Hunk
		expectedHeader string
	}{
		{
			name: "header with multi-line counts",
			hunk: &Hunk{
				OldLine: 10,
				OldCnt:  5,
				NewLine: 15,
				NewCnt:  7,
				Text:    []string{" existing content"},
				Display: []string{" existing content"},
			},
			expectedHeader: "@@ -10,5 +15,7 @@",
		},
		{
			name: "header with single line counts",
			hunk: &Hunk{
				OldLine: 5,
				OldCnt:  1,
				NewLine: 8,
				NewCnt:  1,
				Text:    []string{"+new line"},
				Display: []string{"+new line"},
			},
			expectedHeader: "@@ -5 +8 @@",
		},
		{
			name: "empty hunk",
			hunk: &Hunk{
				OldLine: 20,
				OldCnt:  3,
				NewLine: 25,
				NewCnt:  2,
			},
			expectedHeader: "@@ -20,3 +25,2 @@",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			originalTextLen := len(tt.hunk.Text)
			originalDisplayLen := len(tt.hunk.Display)

			repo.updateHunkHeader(tt.hunk)

			// Header should be inserted at the beginning
			if len(tt.hunk.Text) == 0 || tt.hunk.Text[0] != tt.expectedHeader {
				t.Errorf("Expected header %s, got %v", tt.expectedHeader, tt.hunk.Text)
			}

			// Length should increase by 1
			if len(tt.hunk.Text) != originalTextLen+1 {