package com.github.HarryHook.coding2017.basic;
import static org.junit.Assert.*;
import org.junit.Before;
import org.junit.Test;
import com.github.HarryHook.coding2017.basic.MyStack;
public class StackTest {
private MyStack stack;
@Before
public void setUpStack() {
stack = new MyStack();
}
@Test
public void testStackFunctional() {
assertEquals(true, stack.isEmpty());
stack.push(4);
stack.push(2);
assertEquals(2, stack.size());
assertEquals(false, stack.isEmpty());
int i = (Integer) stack.pop();
assertEquals(2, i);
i = (Integer) stack.peek();
assertEquals(4, i);
i = (Integer) stack.pop();
assertEquals(4, i);
assertEquals(0, stack.size());
assertEquals(true, stack.isEmpty());
}
}