bendns' repos / dmp
my fork of dmp
Diffstat (limited to 'tests/test.rs')
-rw-r--r--tests/test.rs145
1 files changed, 145 insertions, 0 deletions
diff --git a/tests/test.rs b/tests/test.rs
index 5e96a5f..35cd52d 100644
--- a/tests/test.rs
+++ b/tests/test.rs
@@ -1357,3 +1357,148 @@ fn test_match_main() {
)
);
}
+
+// Test for Issue: https://github.com/AnubhabB/diff-match-patch-rs/issues/14
+#[test]
+fn test_patch_repeats_todo_import() -> Result<(), Error> {
+ let dmp = DiffMatchPatch::default();
+
+ // Create source and target strings
+ let source = r##"(
+import { useState, useEffect } from "react";
+import { v4 as uuidv4 } from "uuid";
+import { TodoInput } from "./components/TodoInput";
+import { TodoList, Todo } from "./components/TodoList";
+import { TodoFilter, FilterStatus } from "./components/TodoFilter";
+import { Card, CardHeader, CardTitle, CardContent } from "./components/ui/card";
+
+// Mock implementation of uuid since we don't have access to the actual package
+const mockUuid = (): string => {
+ return Math.random().toString(36).substring(2, 15) +
+ Math.random().toString(36).substring(2, 15);
+};
+
+export default function App() {
+ const [todos, setTodos] = useState<Todo[]>(() => {
+ // Try to load todos from localStorage on initial render
+ const savedTodos = localStorage.getItem("todos");
+ return savedTodos ? JSON.parse(savedTodos) : [
+ { id: mockUui)"##;
+
+ let target = r##"(
+import { useState, useEffect } from "react";
+import { TodoInput } from "./components/TodoInput";
+import { TodoList, Todo } from "./components/TodoList";
+import { TodoFilter, FilterStatus } from "./components/TodoFilter";
+import { Card, CardHeader, CardTitle, CardContent } from "./components/ui/card";
+
+// Mock implementation of uuid since we don't have access to the actual package
+const mockUuid = (): string => {
+ return Math.random().toString(36).substring(2, 15) +
+ Math.random().toString(36).substring(2, 15);
+};
+
+export default function App() {
+ const [todos, setTodos] = useState<Todo[]>(() => {
+ // Try to load todos from localStorage on initial render
+ const savedTodos = localStorage.getItem("todos");
+ return savedTodos ? JSON.parse(savedTodos) : [
+ { id: mockUuid(), text: "Learn React", completed: true },
+ { id: mockUuid(), text: "Build a todo app", completed: false },
+ { id: mockUuid(), text: "Deploy to production", completed: false },
+ ];
+ });
+
+ const [activeFilter, setActiveFilter] = useState<FilterStatus>("all");
+
+ // Save todos to localStorage whenever they change
+ useEffect(() => {
+ localStorage.setItem("todos", JSON.stringify(todos));
+ }, [todos]);
+
+ // Calculate counts for the filter component
+ const todoCount = {
+ all: todos.length,
+ active: todos.filter(todo => !todo.completed).length,
+ completed: todos.filter(todo => todo.completed).length,
+ };
+
+ // Add a new todo
+ const handleAddTodo = (text: string) => {
+ setTodos([
+ ...todos,
+ {
+ id: mockUuid(),
+ text,
+ completed: false,
+ },
+ ]);
+ };
+
+ // Toggle todo completion status
+ const handleToggleComplete = (id: string) => {
+ setTodos(
+ todos.map(todo =>
+ todo.id === id ? { ...todo, completed: !todo.completed } : todo
+ )
+ );
+ };
+
+ // Delete a todo
+ const handleDeleteTodo = (id: string) => {
+ setTodos(todos.filter(todo => todo.id !== id));
+ };
+
+ return (
+ <div className="min-h-screen bg-background flex items-center justify-center p-4">
+ <div className="w-full max-w-md">
+ <Card className="shadow-lg">
+ <CardHeader className="pb-3">
+ <CardTitle className="text-xl font-semibold text-center">Todo List</CardTitle>
+ </CardHeader>
+ <CardContent>
+ <TodoInput onAddTodo={handleAddTodo} />
+
+ <TodoList
+ todos={todos}
+ activeFilter={activeFilter}
+ onToggleComplete={handleToggleComplete}
+ onDelete={handleDeleteTodo}
+ />
+
+ {todos.length > 0 && (
+ <TodoFilter
+ activeFilter={activeFilter}
+ onFilterChange={setActiveFilter}
+ todoCount={todoCount}
+ />
+ )}
+ </CardContent>
+ </Card>
+ </div>
+ </div>
+ );
+}
+)"##;
+
+ // Create patches to transform source into target
+ let patches = dmp.patch_make(PatchInput::Texts::<Efficient>(source, target))?;
+
+ // Apply the patches to the source string
+ let (patched, results) = dmp.patch_apply(&patches, source)?;
+
+ // Verify all patches were applied successfully
+ assert!(results.iter().all(|&result| result));
+
+ // Verify the patched string equals the target
+ assert_eq!(target, patched);
+
+ // Also test with Compat mode
+ let patches_compat = dmp.patch_make(PatchInput::Texts::<Compat>(source, target))?;
+ let (patched_compat, results_compat) = dmp.patch_apply(&patches_compat, source)?;
+
+ assert!(results_compat.iter().all(|&result| result));
+ assert_eq!(target, patched_compat);
+
+ Ok(())
+}