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Make it possible to add objects to LinkedList.

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This commit is contained in:
Oleksii Trekhleb
2018-04-09 12:15:28 +03:00
parent cdf72208b3
commit 8c46dbfb6d
10 changed files with 206 additions and 191 deletions
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15
src/data-structures/stack/__test__/Stack.test.js
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@@ -13,7 +13,7 @@ describe('Stack', () => {
stack.push(1);
stack.push(2);
expect(stack.linkedList.toString()).toBe('1,2');
expect(stack.toString()).toBe('1,2');
});
it('should peek data from stack', () => {
@@ -49,4 +49,17 @@ describe('Stack', () => {
expect(stack.pop()).toBeNull();
expect(stack.isEmpty()).toBeTruthy();
});
it('should be possible to push/pop objects', () => {
const stack = new Stack();
stack.push({ value: 'test1', key: 'key1' });
stack.push({ value: 'test2', key: 'key2' });
const stringifier = value => `${value.key}:${value.value}`;
expect(stack.toString(stringifier)).toBe('key1:test1,key2:test2');
expect(stack.pop().value).toBe('test2');
expect(stack.pop().value).toBe('test1');
});
});