pragprog.com/rggo/interacting/todo/todo_test.go

package todo_test

import (
	"os"
	"testing"

	"pragprog.com/rggo/interacting/todo"
)

func TestAdd(t *testing.T) {
	l := todo.List{}

	taskName := "New Task"
	l.Add(taskName)
	if l[0].Task != taskName {
		t.Errorf("Task name is not matching. Expected: %q, Got: %q", taskName, l[0].Task)
	}
}

func TestComplete(t *testing.T) {
	l := todo.List{}

	taskName := "New Task"
	l.Add(taskName)
	if l[0].Task != taskName {
		t.Errorf("Task name is not matching. Expected: %q, Got: %q", taskName, l[0].Task)
	}
	if l[0].Done {
		t.Errorf("Task should not be completed")
	}
	l.Complete(1)
	if !l[0].Done {
		t.Errorf("Task should be completed")
	}
}

func TestDelete(t *testing.T) {
	l := todo.List{}

	tasks := []string{
		"Task 1",
		"Task 2",
		"Task 3",
	}
	for _, task := range tasks {
		l.Add(task)
	}

	if l[0].Task != tasks[0] {
		t.Errorf("Task name is not matching. Expected: %q, Got: %q", tasks[0], l[0].Task)
	}

	l.Delete(2)
	if len(l) != 2 {
		t.Errorf("Expected list length: 2, Got: %d", len(l))
	}
	if l[1].Task != tasks[2] {
		t.Errorf("Task name is not matching. Expected: %q, Got: %q", tasks[2], l[1].Task)
	}
}

func TestSaveGet(t *testing.T) {
	l1 := todo.List{}
	l2 := todo.List{}

	taskName := "New Task"
	l1.Add(taskName)
	if l1[0].Task != taskName {
		t.Errorf("Task name is not matching. Expected: %q, Got: %q", taskName, l1[0].Task)
	}

	tf, err := os.CreateTemp("", "")
	if err != nil {
		t.Fatalf("Error creating temp file: %v", err)
	}
	defer os.Remove(tf.Name())

	if err := l1.Save(tf.Name()); err != nil {
		t.Fatalf("Error saving todo list: %v", err)
	}

	if err := l2.Get(tf.Name()); err != nil {
		t.Fatalf("Error getting todo list: %v", err)
	}

	if l1[0].Task != l2[0].Task {
		t.Errorf("Task name is not matching. Expected: %q, Got: %q", l1[0].Task, l2[0].Task)
	}

}