Structures/src/TetsStructures/TestStack.java at master · njse22/Structures · GitHub

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package TetsStructures;

import static org.junit.jupiter.api.Assertions.assertFalse;

import static org.junit.jupiter.api.Assertions.assertTrue;

import org.junit.jupiter.api.Test;

import Stack.Stack;

class TestStack {

	private Stack<Integer> stack;

	private void stageOne() {
		stack = new Stack<Integer>();
	}

	@Test
	void test() {
		stageOne();

		assertTrue(stack.isEmpty());
		assertTrue(stack.getSize() == 0);

		stack.push(73);
		stack.push(37);
		stack.push(65);
		stack.push(21);
		stack.push(98);

		assertTrue(stack.getSize() == 5);
		assertFalse(stack.isEmpty());

		assertTrue( stack.topElement().getValue() == 98);
		stack.pop();

		assertTrue( stack.topElement().getValue() == 21);
		stack.pop();

		assertTrue( stack.topElement().getValue() == 65);
		stack.pop();

		assertTrue( stack.topElement().getValue() == 37);
		stack.pop();


		assertTrue( stack.topElement().getValue() == 73);
		stack.pop();

		assertTrue(stack.isEmpty());
		assertTrue(stack.getSize() == 0);


	}

}