Finished implementing the stack stack

1 files changed, 149 insertions, 0 deletions

diff --git a/pkg/stack/stack-stack_test.go b/pkg/stack/stack-stack_test.go
index 6c0c47f..d2a7949 100644
--- a/pkg/stack/stack-stack_test.go
+++ b/pkg/stack/stack-stack_test.go
@@ -100,3 +100,152 @@ func TestBegin(t *testing.T) {
 		require.Equal(t, expected, ss)
 	})
 }
+
+func TestEnd(t *testing.T) {
+	t.Run("empty", func(t *testing.T) {
+		expected := NewStackStack()
+		p := pointer.NewPointer()
+		ss := NewStackStack()
+		ss.Begin(p)
+		reflect := ss.End(p)
+		require.Equal(t, false, reflect)
+		require.Equal(t, expected, ss)
+	})
+	t.Run("drop", func(t *testing.T) {
+		expected := NewStackStack()
+		expected.head.Push(7)
+		expected.head.Push(12)
+		expected.head.Push(14)
+		expected.head.Push(-2)
+		expected.head.Push(5)
+		expected.head.Pop()
+		expected.head.Pop()
+		expected.head.Pop()
+		p := pointer.NewPointer()
+		ss := NewStackStack()
+		ss.head.Push(7)
+		ss.head.Push(12)
+		ss.head.Push(14)
+		ss.head.Push(-2)
+		ss.head.Push(5)
+		ss.head.Push(0)
+		ss.Begin(p)
+		ss.head.Push(18)
+		ss.head.Push(42)
+		ss.head.Push(-3)
+		reflect := ss.End(p)
+		require.Equal(t, false, reflect)
+		require.Equal(t, expected, ss)
+	})
+	t.Run("drop too much", func(t *testing.T) {
+		expected := NewStackStack()
+		p := pointer.NewPointer()
+		ss := NewStackStack()
+		ss.Begin(p)
+		ss.head.Push(-3)
+		reflect := ss.End(p)
+		require.Equal(t, false, reflect)
+		require.Equal(t, expected, ss)
+	})
+	t.Run("reflect", func(t *testing.T) {
+		expected := NewStackStack()
+		p := pointer.NewPointer()
+		ss := NewStackStack()
+		reflect := ss.End(p)
+		require.Equal(t, true, reflect)
+		require.Equal(t, expected, ss)
+	})
+	t.Run("transfert", func(t *testing.T) {
+		expected := NewStackStack()
+		expected.head.size = 5
+		expected.head.data = make([]int, 5)
+		expected.head.Push(7)
+		expected.head.Push(12)
+		expected.head.Push(14)
+		expected.head.Push(-2)
+		expected.head.Push(5)
+		p := pointer.NewPointer()
+		ss := NewStackStack()
+		ss.head.size = 4
+		ss.head.data = make([]int, 4)
+		ss.head.Push(7)
+		ss.head.Push(0)
+		ss.Begin(p)
+		ss.head.Push(0)
+		ss.head.Push(18)
+		ss.head.Push(42)
+		ss.head.Push(7)
+		ss.head.Push(12)
+		ss.head.Push(14)
+		ss.head.Push(-2)
+		ss.head.Push(5)
+		ss.head.Push(4)
+		reflect := ss.End(p)
+		require.Equal(t, false, reflect)
+		require.Equal(t, expected, ss)
+	})
+}
+
+func TestUnder(t *testing.T) {
+	t.Run("empty", func(t *testing.T) {
+		expected := NewStackStack()
+		ss := NewStackStack()
+		reflect := ss.Under()
+		require.Equal(t, true, reflect)
+		require.Equal(t, expected, ss)
+	})
+	t.Run("positive", func(t *testing.T) {
+		pe := pointer.NewPointer()
+		expected := NewStackStack()
+		expected.head.Push(1)
+		expected.head.Push(2)
+		expected.head.Push(3)
+		expected.head.Push(6)
+		expected.head.Push(0)
+		expected.Begin(pe)
+		expected.head.Push(0)
+		expected.head.Push(0)
+		expected.head.Push(6)
+		expected.head.next.Pop()
+		expected.head.next.Pop()
+		expected.head.next.Pop()
+		p := pointer.NewPointer()
+		ss := NewStackStack()
+		ss.head.Push(1)
+		ss.head.Push(2)
+		ss.head.Push(3)
+		ss.head.Push(6)
+		ss.head.Push(0)
+		ss.Begin(p)
+		ss.head.Push(3)
+		reflect := ss.Under()
+		require.Equal(t, false, reflect)
+		require.Equal(t, expected, ss)
+	})
+	t.Run("negative", func(t *testing.T) {
+		pe := pointer.NewPointer()
+		expected := NewStackStack()
+		expected.Begin(pe)
+		expected.head.next.Push(12)
+		expected.head.next.Push(5)
+		expected.head.next.Push(8)
+		expected.head.Push(8)
+		expected.head.Push(5)
+		expected.head.Push(12)
+		expected.head.Push(-3)
+		expected.head.Pop()
+		expected.head.Pop()
+		expected.head.Pop()
+		expected.head.Pop()
+		p := pointer.NewPointer()
+		ss := NewStackStack()
+		ss.Begin(p)
+		ss.head.Push(8)
+		ss.head.Push(5)
+		ss.head.Push(12)
+		ss.head.Push(-3)
+		reflect := ss.Under()
+		require.Equal(t, false, reflect)
+		require.Equal(t, expected, ss)
+	})
+}