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Integrate codecov.

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This commit is contained in:
Oleksii Trekhleb 2018-04-04 07:39:42 +03:00
parent 7655accd66
commit c79dfac2c5
2 changed files with 31 additions and 0 deletions
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2
src/data-structures/heap/MinHeap.js
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@ -126,6 +126,8 @@ export default class MinHeap {
return 0;
}
// Min heap may be converted to max heap by simply changing this line to:
// a > b ? -1 : 1
return a < b ? -1 : 1;
}

29
src/data-structures/heap/__test__/MinHeap.test.js
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@ -26,6 +26,19 @@ describe('MinHeap', () => {
minHeap.add(1);
expect(minHeap.peek()).toBe(1);
expect(minHeap.toString()).toBe('1,3,10,5');
minHeap.add(1);
expect(minHeap.peek()).toBe(1);
expect(minHeap.toString()).toBe('1,1,10,5,3');
expect(minHeap.poll()).toBe(1);
expect(minHeap.toString()).toBe('1,3,10,5');
expect(minHeap.poll()).toBe(1);
expect(minHeap.toString()).toBe('3,5,10');
expect(minHeap.poll()).toBe(3);
expect(minHeap.toString()).toBe('5,10');
});
it('should poll items from the heap and heapify it down', () => {
@ -57,4 +70,20 @@ describe('MinHeap', () => {
expect(minHeap.poll()).toBeNull();
expect(minHeap.toString()).toBe('');
});
it('should heapify down through the right branch as well', () => {
const minHeap = new MinHeap();
minHeap.add(3);
minHeap.add(12);
minHeap.add(10);
expect(minHeap.toString()).toBe('3,12,10');
minHeap.add(11);
expect(minHeap.toString()).toBe('3,11,10,12');
expect(minHeap.poll()).toBe(3);
expect(minHeap.toString()).toBe('10,11,12');
});
});