public void AGlobalUndoLimitShouldBeEnforced()
{
string key = "key";
var mockTask = new MockUnit();
string expectedValue1 = "1";
var target = new UndoService();
target.SetMaximumUndoCount(2, key);
Assert.AreEqual(0, target.GetUnitCount(UndoService.UnitType.Repeatable, key), "Repeatable unit count should be 0.");
Assert.AreEqual(0, target.GetUnitCount(UndoService.UnitType.Undoable, key), "Undoable unit count should be 0.");
Assert.AreEqual(0, target.GetUnitCount(UndoService.UnitType.Redoable, key), "Redoable unit count should be 0.");
for (int i = 0; i < 5; i++)
{
target.PerformUnit(mockTask, expectedValue1, key);
}
Assert.AreEqual(2, target.GetUnitCount(UndoService.UnitType.Repeatable, key), "Repeatable tasks.");
Assert.AreEqual(0, target.GetUnitCount(UndoService.UnitType.Undoable, key), "Undoable tasks.");
Assert.AreEqual(0, target.GetUnitCount(UndoService.UnitType.Redoable, key), "Redoable tasks.");
MockUndoableUnit mockUndoableUnit = new MockUndoableUnit();
for (int i = 0; i < 5; i++)
{
target.PerformUnit(mockUndoableUnit, i.ToString(), key);
}
Assert.AreEqual(2, target.GetUnitCount(UndoService.UnitType.Repeatable, key), "Repeatable tasks.");
Assert.AreEqual(2, target.GetUnitCount(UndoService.UnitType.Undoable, key), "Undoable tasks.");
}
void NonUndoableTasksShouldNotBeUndoable(object key)
{
var task1 = new MockUnit();
var target = new UndoService();
Assert.IsFalse(target.CanUndo(key));
target.PerformUnit(task1, "1", key);
Assert.IsFalse(target.CanUndo(key));
}
public void NonRepeatableTaskShouldNotBeRepeatable()
{
var task1 = new MockUnit();
var target = new UndoService();
object key = new object();
Assert.IsFalse(target.CanRepeat(key));
target.PerformUnit(task1, "1", key);
Assert.IsFalse(target.CanRepeat(key));
}
public void NonRepeatableGlobalTaskShouldNotBeRepeatable()
{
var task1 = new MockUnit();
var target = new UndoService();
string arg1 = "1";
Assert.IsFalse(target.CanRepeat(null));
target.PerformUnit(task1, arg1, null);
Assert.IsFalse(target.CanRepeat(null));
}
public void AGlobalTaskShouldBePerformed()
{
var mockTask = new MockUnit();
string expectedValue1 = "1";
var target = new UndoService();
target.PerformUnit(mockTask, expectedValue1, null);
Assert.AreEqual(mockTask.LastArgument, expectedValue1);
Assert.AreEqual(mockTask.ExecutionCount, 1);
}
void GetRepeatableTasksShouldReturnRepeatableTasks(object key)
{
var task1 = new MockUnit {
RepeatableTest = true
};
var target = new UndoService();
var list = target.GetRepeatableUnits(key);
Assert.IsTrue(list.Count() < 1);
target.PerformUnit(task1, string.Empty, key);
list = target.GetRepeatableUnits(key);
Assert.IsTrue(list.Count() > 0);
}
public void RepeatableTaskShouldBeRepeatable()
{
var task1 = new MockUnit {
RepeatableTest = true
};
var target = new UndoService();
object key = new object();
Assert.IsFalse(target.CanRepeat(key));
target.PerformUnit(task1, "1", key);
Assert.IsTrue(target.CanRepeat(key));
target.Repeat(key);
Assert.IsTrue(task1.ExecutionCount == 2);
}
public void RepeatableGlobalTaskShouldBeRepeatable()
{
var task1 = new MockUnit {
RepeatableTest = true
};
var target = new UndoService();
string arg1 = "1";
Assert.IsFalse(target.CanRepeat(null));
target.PerformUnit(task1, arg1, null);
Assert.IsTrue(target.CanRepeat(null));
target.Repeat(null);
Assert.IsTrue(task1.ExecutionCount == 2);
}
void PerformingTaskShouldClearUndoableList(object key)
{
/* First set up some undoable tasks. */
var task1 = new MockUndoableUnit();
var target = new UndoService();
target.PerformUnit(task1, "1", key);
Assert.IsTrue(target.CanUndo(key));
/* Perform a non-undoable unit. This must clear the undoable list. */
var task2 = new MockUnit {
RepeatableTest = true
};
target.PerformUnit(task2, "1", key);
Assert.IsFalse(target.CanUndo(key));
}