func TestStackPop(t *testing.T) { stack := stack.NewStack() stack.Push(42) stack.Push(2) var v int var empty bool v, empty = stack.Pop() if e := 2; v != e { t.Errorf("expected stack to pop the value: %d, got %d", e, v) } if empty != false { t.Error("expected stack to not be empty.") } if e := 1; stack.Count() != e { t.Errorf("expected stack count to be: %d, got %d", e, v) } v, empty = stack.Pop() if e := 42; v != e { t.Errorf("expected stack to pop the value: %d, got %d", e, v) } if empty != true { t.Error("expected stack to be empty.") } if e := 0; stack.Count() != e { t.Errorf("expected stack count to be: %d, got %d", e, v) } stack.Push(100) v, empty = stack.Pop() if e := 100; v != e { t.Errorf("expected stack to pop the value: %d, got %d", e, v) } if empty != true { t.Error("expected stack to be empty.") } if e := 0; stack.Count() != e { t.Errorf("expected stack count to be: %d, got %d", e, v) } v, empty = stack.Pop() if e := 0; v != e { t.Errorf("expected stack to pop the value: %d, got %d", e, v) } if empty != true { t.Error("expected stack to be empty.") } if e := 0; stack.Count() != e { t.Errorf("expected stack count to be: %d, got %d", e, v) } }
func TestManyPushes(t *testing.T) { count := 10000 stack := stack.NewStack() for i := 0; i < count; i++ { stack.Push(i + 1) } if a := stack.Count(); a != count { t.Errorf("Expected stack count to be %d, got %d", count, a) } for e := count; e > 0; e-- { if a, _ := stack.Pop(); a != e { t.Errorf("Expected stack to pop %d, got %d", e, a) } } }