fix overdue test case

correctly return pointer to Task inside TaskList.

README.md

@@ -3,7 +3,7 @@ go-todotxt
 
 A Go todo.txt library.  
 
-[![GoDoc](https://godoc.org/github.com/JamesClonk/go-todotxt?status.png)](https://godoc.org/github.com/JamesClonk/go-todotxt) [![Build Status](https://travis-ci.org/JamesClonk/go-todotxt.png?branch=master)](https://travis-ci.org/JamesClonk/go-todotxt) [![Codebot](https://codebot.io/badge/github.com/JamesClonk/go-todotxt.png)](http://codebot.io/doc/pkg/github.com/JamesClonk/go-todotxt "Codebot") [![Bitdeli Badge](https://d2weczhvl823v0.cloudfront.net/JamesClonk/go-todotxt/trend.png)](https://bitdeli.com/free "Bitdeli Badge")
+[![GoDoc](https://godoc.org/github.com/JamesClonk/go-todotxt?status.png)](https://godoc.org/github.com/JamesClonk/go-todotxt) [![Build Status](https://travis-ci.org/JamesClonk/go-todotxt.png?branch=master)](https://travis-ci.org/JamesClonk/go-todotxt)
 
 The *todotxt* package is a Go client library for Gina Trapani's [todo.txt](https://github.com/ginatrapani/todo.txt-cli/) files.
 It allows for parsing and manipulating of task lists and tasks in the todo.txt format.
@@ -35,16 +35,30 @@ go-todotxt requires Go1.1 or higher.
 			log.Fatal(err)
 		}
 
+		// tasklist now contains a slice of Tasks
 		fmt.Printf("Task 2, todo: %v\n", tasklist[1].Todo)
 		fmt.Printf("Task 3: %v\n", tasklist[2])
 		fmt.Printf("Task 4, has priority: %v\n\n", tasklist[3].HasPriority())
 		fmt.Print(tasklist)
 
 		// Filter list to get only completed tasks
-		completedList := testTasklist.Filter(func(t Task) bool {
+		completedList := tasklist.Filter(func(t Task) bool {
 			return t.Completed 
 		})
 		fmt.Print(completedList)
+
+		// Add a new empty Task to tasklist
+		task := NewTask()
+		tasklist.AddTask(&task)
+
+		// Or a parsed Task from a string
+		parsedTask, _ := ParseTask("x (C) 2014-01-01 Create golang library documentation @Go +go-todotxt due:2014-01-12")
+		tasklist.AddTask(parsed)
+
+		// Update an existing task
+		task, _ := tasklist.GetTask(2) // Task pointer
+		task.Todo = "Do something different.."
+		tasklist.WriteToFilename("todo.txt")
 	}
 ```
 

testdata/ouput_todo.txt

@@ -1,6 +1,6 @@
 2013-02-22 Pick up milk @GroceryStore
 x Download Todo.txt mobile app @Phone
-(B) 2013-12-01 Outline chapter 5 @Computer +Novel Level:5 private:false due:2014-02-17
+(C) 2013-12-01 Go home! @Computer +Novel Level:5 private:false due:2011-11-11
 x 2014-01-02 (B) 2013-12-30 Create golang library test cases @Go +go-todotxt
 x 2014-01-03 2014-01-01 Create some more golang library test cases @Go +go-todotxt
 (B) 2013-12-01 Outline chapter 5 @Computer +Novel Level:5 private:false due:2014-02-17

testdata/task_todo.txt

@@ -57,7 +57,7 @@ x 2014-01-03 2014-01-01 Create some more golang library test cases @Go +go-todot
 
 # Overdue test cases
 x 2014-01-04 (B) 2013-12-30 Create golang library @Go +go-todotxt due:2014-01-02
-(B) 2013-12-01 private:false Outline chapter 5 +Novel @Computer due:2017-07-17 Level:5 
+(B) 2013-12-01 private:false Outline chapter 5 +Novel @Computer due:2027-07-17 Level:5
 Research self-publishing services +Novel +Novel +Novel due:2014-01-01
 x 2014-01-03 2014-01-01 Create some more golang library test cases @Go +go-todotxt
 

todotxt.go

@@ -43,7 +43,7 @@ func (tasklist TaskList) String() (text string) {
 	return text
 }
 
-// AddTask appends a task to the current TaskList and takes care to set the Task.Id correctly, modifying the Task by the given pointer!
+// AddTask appends a Task to the current TaskList and takes care to set the Task.Id correctly, modifying the Task by the given pointer!
 func (tasklist *TaskList) AddTask(task *Task) {
 	task.Id = 0
 	for _, t := range *tasklist {
@@ -56,18 +56,19 @@ func (tasklist *TaskList) AddTask(task *Task) {
 	*tasklist = append(*tasklist, *task)
 }
 
-// GetTask returns task by given task 'id' from the TaskList. Returns an error if task could not be found.
+// GetTask returns a Task by given task 'id' from the TaskList. The returned Task pointer can be used to update the Task inside the TaskList.
+// Returns an error if Task could not be found.
 func (tasklist *TaskList) GetTask(id int) (*Task, error) {
-	for _, t := range *tasklist {
-		if t.Id == id {
-			return &t, nil
+	for i := range *tasklist {
+		if ([]Task(*tasklist))[i].Id == id {
+			return &([]Task(*tasklist))[i], nil
 		}
 	}
 	return nil, errors.New("task not found")
 }
 
-// RemoveTaskById removes any task with given task 'id' from the TaskList.
-// Returns an error if no task was removed.
+// RemoveTaskById removes any Task with given Task 'id' from the TaskList.
+// Returns an error if no Task was removed.
 func (tasklist *TaskList) RemoveTaskById(id int) error {
 	var newList TaskList
 
@@ -87,8 +88,8 @@ func (tasklist *TaskList) RemoveTaskById(id int) error {
 	return nil
 }
 
-// RemoveTask removes any task from the TaskList with the same String representation as the given task.
-// Returns an error if no task was removed.
+// RemoveTask removes any Task from the TaskList with the same String representation as the given Task.
+// Returns an error if no Task was removed.
 func (tasklist *TaskList) RemoveTask(task Task) error {
 	var newList TaskList
 

todotxt_test.go

@@ -329,6 +329,52 @@ func TestTaskListGetTask(t *testing.T) {
 	taskId++
 }
 
+func TestTaskListUpdateTask(t *testing.T) {
+	if err := testTasklist.LoadFromFilename(testInputTasklist); err != nil {
+		t.Fatal(err)
+	}
+
+	taskId := 3
+	task, err := testTasklist.GetTask(taskId)
+	if err != nil {
+		t.Error(err)
+	}
+	testExpected = "(B) 2013-12-01 Outline chapter 5 @Computer +Novel Level:5 private:false due:2014-02-17"
+	testGot = task.String()
+	if testGot != testExpected {
+		t.Errorf("Expected Task[%d] to be [%s], but got [%s]", taskId, testExpected, testGot)
+	}
+	testExpected = 3
+	testGot = testTasklist[taskId-1].Id
+	if testGot != testExpected {
+		t.Errorf("Expected Task[%d] to be [%d], but got [%d]", taskId, testExpected, testGot)
+	}
+
+	task.Priority = "C"
+	task.Todo = "Go home!"
+	date, err := time.Parse(DateLayout, "2011-11-11")
+	if err != nil {
+		t.Error(err)
+	}
+	task.DueDate = date
+	testGot := task
+
+	os.Remove(testOutput)
+	if err := testTasklist.WriteToFilename(testOutput); err != nil {
+		t.Fatal(err)
+	}
+	if err := testTasklist.LoadFromFilename(testOutput); err != nil {
+		t.Fatal(err)
+	}
+	testExpected, err := testTasklist.GetTask(taskId)
+	if err != nil {
+		t.Error(err)
+	}
+	if testGot.Task() != testExpected.Task() {
+		t.Errorf("Expected Task to be [%v]\n, but got [%v]", testExpected, testGot)
+	}
+}
+
 func TestTaskListRemoveTaskById(t *testing.T) {
 	if err := testTasklist.LoadFromFilename(testInputTasklist); err != nil {
 		t.Fatal(err)