add initial git support

internal/llm/tools/edit_test.go

@@ -459,51 +459,3 @@ func TestEditTool_Run(t *testing.T) {
 		assert.Equal(t, initialContent, string(fileContent))
 	})
 }
-
-func TestGenerateDiff(t *testing.T) {
-	testCases := []struct {
-		name         string
-		oldContent   string
-		newContent   string
-		expectedDiff string
-	}{
-		{
-			name:         "add content",
-			oldContent:   "Line 1\nLine 2\n",
-			newContent:   "Line 1\nLine 2\nLine 3\n",
-			expectedDiff: "Changes:\n  Line 1\n  Line 2\n+ Line 3\n",
-		},
-		{
-			name:         "remove content",
-			oldContent:   "Line 1\nLine 2\nLine 3\n",
-			newContent:   "Line 1\nLine 3\n",
-			expectedDiff: "Changes:\n  Line 1\n- Line 2\n  Line 3\n",
-		},
-		{
-			name:         "replace content",
-			oldContent:   "Line 1\nLine 2\nLine 3\n",
-			newContent:   "Line 1\nModified Line\nLine 3\n",
-			expectedDiff: "Changes:\n  Line 1\n- Line 2\n+ Modified Line\n  Line 3\n",
-		},
-		{
-			name:         "empty to content",
-			oldContent:   "",
-			newContent:   "Line 1\nLine 2\n",
-			expectedDiff: "Changes:\n+ Line 1\n+ Line 2\n",
-		},
-		{
-			name:         "content to empty",
-			oldContent:   "Line 1\nLine 2\n",
-			newContent:   "",
-			expectedDiff: "Changes:\n- Line 1\n- Line 2\n",
-		},
-	}
-
-	for _, tc := range testCases {
-		t.Run(tc.name, func(t *testing.T) {
-			diff := GenerateDiff(tc.oldContent, tc.newContent)
-			assert.Contains(t, diff, tc.expectedDiff)
-		})
-	}
-}
-