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Avoid using toBeTruthy() and toBeFalsy() because of type coercion.

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Oleksii Trekhleb
2018-07-26 16:14:26 +03:00
parent 8da83cd9dc
commit 39acb2b65d
25 changed files with 367 additions and 367 deletions
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4
src/algorithms/graph/detect-cycle/__test__/detectUndirectedCycleUsingDisjointSet.test.js
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@@ -27,10 +27,10 @@ describe('detectUndirectedCycleUsingDisjointSet', () => {
.addEdge(edgeBC)
.addEdge(edgeCD);
expect(detectUndirectedCycleUsingDisjointSet(graph)).toBeFalsy();
expect(detectUndirectedCycleUsingDisjointSet(graph)).toBe(false);
graph.addEdge(edgeDE);
expect(detectUndirectedCycleUsingDisjointSet(graph)).toBeTruthy();
expect(detectUndirectedCycleUsingDisjointSet(graph)).toBe(true);
});
});

34
src/algorithms/math/is-power-of-two/__test__/isPowerOfTwo.test.js
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@@ -2,22 +2,22 @@ import isPowerOfTwo from '../isPowerOfTwo';
describe('isPowerOfTwo', () => {
it('should check if the number is made by multiplying twos', () => {
expect(isPowerOfTwo(-1)).toBeFalsy();
expect(isPowerOfTwo(0)).toBeFalsy();
expect(isPowerOfTwo(1)).toBeTruthy();
expect(isPowerOfTwo(2)).toBeTruthy();
expect(isPowerOfTwo(3)).toBeFalsy();
expect(isPowerOfTwo(4)).toBeTruthy();
expect(isPowerOfTwo(5)).toBeFalsy();
expect(isPowerOfTwo(6)).toBeFalsy();
expect(isPowerOfTwo(7)).toBeFalsy();
expect(isPowerOfTwo(8)).toBeTruthy();
expect(isPowerOfTwo(10)).toBeFalsy();
expect(isPowerOfTwo(12)).toBeFalsy();
expect(isPowerOfTwo(16)).toBeTruthy();
expect(isPowerOfTwo(31)).toBeFalsy();
expect(isPowerOfTwo(64)).toBeTruthy();
expect(isPowerOfTwo(1024)).toBeTruthy();
expect(isPowerOfTwo(1023)).toBeFalsy();
expect(isPowerOfTwo(-1)).toBe(false);
expect(isPowerOfTwo(0)).toBe(false);
expect(isPowerOfTwo(1)).toBe(true);
expect(isPowerOfTwo(2)).toBe(true);
expect(isPowerOfTwo(3)).toBe(false);
expect(isPowerOfTwo(4)).toBe(true);
expect(isPowerOfTwo(5)).toBe(false);
expect(isPowerOfTwo(6)).toBe(false);
expect(isPowerOfTwo(7)).toBe(false);
expect(isPowerOfTwo(8)).toBe(true);
expect(isPowerOfTwo(10)).toBe(false);
expect(isPowerOfTwo(12)).toBe(false);
expect(isPowerOfTwo(16)).toBe(true);
expect(isPowerOfTwo(31)).toBe(false);
expect(isPowerOfTwo(64)).toBe(true);
expect(isPowerOfTwo(1024)).toBe(true);
expect(isPowerOfTwo(1023)).toBe(false);
});
});

34
src/algorithms/math/is-power-of-two/__test__/isPowerOfTwoBitwise.test.js
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@@ -2,22 +2,22 @@ import isPowerOfTwoBitwise from '../isPowerOfTwoBitwise';
describe('isPowerOfTwoBitwise', () => {
it('should check if the number is made by multiplying twos', () => {
expect(isPowerOfTwoBitwise(-1)).toBeFalsy();
expect(isPowerOfTwoBitwise(0)).toBeFalsy();
expect(isPowerOfTwoBitwise(1)).toBeTruthy();
expect(isPowerOfTwoBitwise(2)).toBeTruthy();
expect(isPowerOfTwoBitwise(3)).toBeFalsy();
expect(isPowerOfTwoBitwise(4)).toBeTruthy();
expect(isPowerOfTwoBitwise(5)).toBeFalsy();
expect(isPowerOfTwoBitwise(6)).toBeFalsy();
expect(isPowerOfTwoBitwise(7)).toBeFalsy();
expect(isPowerOfTwoBitwise(8)).toBeTruthy();
expect(isPowerOfTwoBitwise(10)).toBeFalsy();
expect(isPowerOfTwoBitwise(12)).toBeFalsy();
expect(isPowerOfTwoBitwise(16)).toBeTruthy();
expect(isPowerOfTwoBitwise(31)).toBeFalsy();
expect(isPowerOfTwoBitwise(64)).toBeTruthy();
expect(isPowerOfTwoBitwise(1024)).toBeTruthy();
expect(isPowerOfTwoBitwise(1023)).toBeFalsy();
expect(isPowerOfTwoBitwise(-1)).toBe(false);
expect(isPowerOfTwoBitwise(0)).toBe(false);
expect(isPowerOfTwoBitwise(1)).toBe(true);
expect(isPowerOfTwoBitwise(2)).toBe(true);
expect(isPowerOfTwoBitwise(3)).toBe(false);
expect(isPowerOfTwoBitwise(4)).toBe(true);
expect(isPowerOfTwoBitwise(5)).toBe(false);
expect(isPowerOfTwoBitwise(6)).toBe(false);
expect(isPowerOfTwoBitwise(7)).toBe(false);
expect(isPowerOfTwoBitwise(8)).toBe(true);
expect(isPowerOfTwoBitwise(10)).toBe(false);
expect(isPowerOfTwoBitwise(12)).toBe(false);
expect(isPowerOfTwoBitwise(16)).toBe(true);
expect(isPowerOfTwoBitwise(31)).toBe(false);
expect(isPowerOfTwoBitwise(64)).toBe(true);
expect(isPowerOfTwoBitwise(1024)).toBe(true);
expect(isPowerOfTwoBitwise(1023)).toBe(false);
});
});

42
src/algorithms/math/primality-test/__test__/trialDivision.test.js
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@@ -4,30 +4,30 @@ import trialDivision from '../trialDivision';
* @param {function(n: number)} testFunction
*/
function primalityTest(testFunction) {
expect(testFunction(1)).toBeFalsy();
expect(testFunction(2)).toBeTruthy();
expect(testFunction(3)).toBeTruthy();
expect(testFunction(5)).toBeTruthy();
expect(testFunction(11)).toBeTruthy();
expect(testFunction(191)).toBeTruthy();
expect(testFunction(191)).toBeTruthy();
expect(testFunction(199)).toBeTruthy();
expect(testFunction(1)).toBe(false);
expect(testFunction(2)).toBe(true);
expect(testFunction(3)).toBe(true);
expect(testFunction(5)).toBe(true);
expect(testFunction(11)).toBe(true);
expect(testFunction(191)).toBe(true);
expect(testFunction(191)).toBe(true);
expect(testFunction(199)).toBe(true);
expect(testFunction(-1)).toBeFalsy();
expect(testFunction(0)).toBeFalsy();
expect(testFunction(4)).toBeFalsy();
expect(testFunction(6)).toBeFalsy();
expect(testFunction(12)).toBeFalsy();
expect(testFunction(14)).toBeFalsy();
expect(testFunction(25)).toBeFalsy();
expect(testFunction(192)).toBeFalsy();
expect(testFunction(200)).toBeFalsy();
expect(testFunction(400)).toBeFalsy();
expect(testFunction(-1)).toBe(false);
expect(testFunction(0)).toBe(false);
expect(testFunction(4)).toBe(false);
expect(testFunction(6)).toBe(false);
expect(testFunction(12)).toBe(false);
expect(testFunction(14)).toBe(false);
expect(testFunction(25)).toBe(false);
expect(testFunction(192)).toBe(false);
expect(testFunction(200)).toBe(false);
expect(testFunction(400)).toBe(false);
// It should also deal with floats.
expect(testFunction(0.5)).toBeFalsy();
expect(testFunction(1.3)).toBeFalsy();
expect(testFunction(10.5)).toBeFalsy();
expect(testFunction(0.5)).toBe(false);
expect(testFunction(1.3)).toBe(false);
expect(testFunction(10.5)).toBe(false);
}
describe('trialDivision', () => {

54
src/algorithms/string/regular-expression-matching/__test__/regularExpressionMatching.test.js
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@@ -2,33 +2,33 @@ import regularExpressionMatching from '../regularExpressionMatching';
describe('regularExpressionMatching', () => {
it('should match regular expressions in a string', () => {
expect(regularExpressionMatching('', '')).toBeTruthy();
expect(regularExpressionMatching('a', 'a')).toBeTruthy();
expect(regularExpressionMatching('aa', 'aa')).toBeTruthy();
expect(regularExpressionMatching('aab', 'aab')).toBeTruthy();
expect(regularExpressionMatching('aab', 'aa.')).toBeTruthy();
expect(regularExpressionMatching('aab', '.a.')).toBeTruthy();
expect(regularExpressionMatching('aab', '...')).toBeTruthy();
expect(regularExpressionMatching('a', 'a*')).toBeTruthy();
expect(regularExpressionMatching('aaa', 'a*')).toBeTruthy();
expect(regularExpressionMatching('aaab', 'a*b')).toBeTruthy();
expect(regularExpressionMatching('aaabb', 'a*b*')).toBeTruthy();
expect(regularExpressionMatching('aaabb', 'a*b*c*')).toBeTruthy();
expect(regularExpressionMatching('', 'a*')).toBeTruthy();
expect(regularExpressionMatching('xaabyc', 'xa*b.c')).toBeTruthy();
expect(regularExpressionMatching('aab', 'c*a*b*')).toBeTruthy();
expect(regularExpressionMatching('mississippi', 'mis*is*.p*.')).toBeTruthy();
expect(regularExpressionMatching('ab', '.*')).toBeTruthy();
expect(regularExpressionMatching('', '')).toBe(true);
expect(regularExpressionMatching('a', 'a')).toBe(true);
expect(regularExpressionMatching('aa', 'aa')).toBe(true);
expect(regularExpressionMatching('aab', 'aab')).toBe(true);
expect(regularExpressionMatching('aab', 'aa.')).toBe(true);
expect(regularExpressionMatching('aab', '.a.')).toBe(true);
expect(regularExpressionMatching('aab', '...')).toBe(true);
expect(regularExpressionMatching('a', 'a*')).toBe(true);
expect(regularExpressionMatching('aaa', 'a*')).toBe(true);
expect(regularExpressionMatching('aaab', 'a*b')).toBe(true);
expect(regularExpressionMatching('aaabb', 'a*b*')).toBe(true);
expect(regularExpressionMatching('aaabb', 'a*b*c*')).toBe(true);
expect(regularExpressionMatching('', 'a*')).toBe(true);
expect(regularExpressionMatching('xaabyc', 'xa*b.c')).toBe(true);
expect(regularExpressionMatching('aab', 'c*a*b*')).toBe(true);
expect(regularExpressionMatching('mississippi', 'mis*is*.p*.')).toBe(true);
expect(regularExpressionMatching('ab', '.*')).toBe(true);
expect(regularExpressionMatching('', 'a')).toBeFalsy();
expect(regularExpressionMatching('a', '')).toBeFalsy();
expect(regularExpressionMatching('aab', 'aa')).toBeFalsy();
expect(regularExpressionMatching('aab', 'baa')).toBeFalsy();
expect(regularExpressionMatching('aabc', '...')).toBeFalsy();
expect(regularExpressionMatching('aaabbdd', 'a*b*c*')).toBeFalsy();
expect(regularExpressionMatching('mississippi', 'mis*is*p*.')).toBeFalsy();
expect(regularExpressionMatching('ab', 'a*')).toBeFalsy();
expect(regularExpressionMatching('abba', 'a*b*.c')).toBeFalsy();
expect(regularExpressionMatching('abba', '.*c')).toBeFalsy();
expect(regularExpressionMatching('', 'a')).toBe(false);
expect(regularExpressionMatching('a', '')).toBe(false);
expect(regularExpressionMatching('aab', 'aa')).toBe(false);
expect(regularExpressionMatching('aab', 'baa')).toBe(false);
expect(regularExpressionMatching('aabc', '...')).toBe(false);
expect(regularExpressionMatching('aaabbdd', 'a*b*c*')).toBe(false);
expect(regularExpressionMatching('mississippi', 'mis*is*p*.')).toBe(false);
expect(regularExpressionMatching('ab', 'a*')).toBe(false);
expect(regularExpressionMatching('abba', 'a*b*.c')).toBe(false);
expect(regularExpressionMatching('abba', '.*c')).toBe(false);
});
});

20
src/algorithms/uncategorized/jump-game/__test__/backtrackingJumpGame.test.js
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@@ -2,16 +2,16 @@ import backtrackingJumpGame from '../backtrackingJumpGame';
describe('backtrackingJumpGame', () => {
it('should solve Jump Game problem in backtracking manner', () => {
expect(backtrackingJumpGame([1, 0])).toBeTruthy();
expect(backtrackingJumpGame([100, 0])).toBeTruthy();
expect(backtrackingJumpGame([2, 3, 1, 1, 4])).toBeTruthy();
expect(backtrackingJumpGame([1, 1, 1, 1, 1])).toBeTruthy();
expect(backtrackingJumpGame([1, 1, 1, 10, 1])).toBeTruthy();
expect(backtrackingJumpGame([1, 5, 2, 1, 0, 2, 0])).toBeTruthy();
expect(backtrackingJumpGame([1, 0])).toBe(true);
expect(backtrackingJumpGame([100, 0])).toBe(true);
expect(backtrackingJumpGame([2, 3, 1, 1, 4])).toBe(true);
expect(backtrackingJumpGame([1, 1, 1, 1, 1])).toBe(true);
expect(backtrackingJumpGame([1, 1, 1, 10, 1])).toBe(true);
expect(backtrackingJumpGame([1, 5, 2, 1, 0, 2, 0])).toBe(true);
expect(backtrackingJumpGame([1, 0, 1])).toBeFalsy();
expect(backtrackingJumpGame([3, 2, 1, 0, 4])).toBeFalsy();
expect(backtrackingJumpGame([0, 0, 0, 0, 0])).toBeFalsy();
expect(backtrackingJumpGame([5, 4, 3, 2, 1, 0, 0])).toBeFalsy();
expect(backtrackingJumpGame([1, 0, 1])).toBe(false);
expect(backtrackingJumpGame([3, 2, 1, 0, 4])).toBe(false);
expect(backtrackingJumpGame([0, 0, 0, 0, 0])).toBe(false);
expect(backtrackingJumpGame([5, 4, 3, 2, 1, 0, 0])).toBe(false);
});
});

20
src/algorithms/uncategorized/jump-game/__test__/dpBottomUpJumpGame.test.js
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@@ -2,16 +2,16 @@ import dpBottomUpJumpGame from '../dpBottomUpJumpGame';
describe('dpBottomUpJumpGame', () => {
it('should solve Jump Game problem in bottom-up dynamic programming manner', () => {
expect(dpBottomUpJumpGame([1, 0])).toBeTruthy();
expect(dpBottomUpJumpGame([100, 0])).toBeTruthy();
expect(dpBottomUpJumpGame([2, 3, 1, 1, 4])).toBeTruthy();
expect(dpBottomUpJumpGame([1, 1, 1, 1, 1])).toBeTruthy();
expect(dpBottomUpJumpGame([1, 1, 1, 10, 1])).toBeTruthy();
expect(dpBottomUpJumpGame([1, 5, 2, 1, 0, 2, 0])).toBeTruthy();
expect(dpBottomUpJumpGame([1, 0])).toBe(true);
expect(dpBottomUpJumpGame([100, 0])).toBe(true);
expect(dpBottomUpJumpGame([2, 3, 1, 1, 4])).toBe(true);
expect(dpBottomUpJumpGame([1, 1, 1, 1, 1])).toBe(true);
expect(dpBottomUpJumpGame([1, 1, 1, 10, 1])).toBe(true);
expect(dpBottomUpJumpGame([1, 5, 2, 1, 0, 2, 0])).toBe(true);
expect(dpBottomUpJumpGame([1, 0, 1])).toBeFalsy();
expect(dpBottomUpJumpGame([3, 2, 1, 0, 4])).toBeFalsy();
expect(dpBottomUpJumpGame([0, 0, 0, 0, 0])).toBeFalsy();
expect(dpBottomUpJumpGame([5, 4, 3, 2, 1, 0, 0])).toBeFalsy();
expect(dpBottomUpJumpGame([1, 0, 1])).toBe(false);
expect(dpBottomUpJumpGame([3, 2, 1, 0, 4])).toBe(false);
expect(dpBottomUpJumpGame([0, 0, 0, 0, 0])).toBe(false);
expect(dpBottomUpJumpGame([5, 4, 3, 2, 1, 0, 0])).toBe(false);
});
});

20
src/algorithms/uncategorized/jump-game/__test__/dpTopDownJumpGame.test.js
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@@ -2,16 +2,16 @@ import dpTopDownJumpGame from '../dpTopDownJumpGame';
describe('dpTopDownJumpGame', () => {
it('should solve Jump Game problem in top-down dynamic programming manner', () => {
expect(dpTopDownJumpGame([1, 0])).toBeTruthy();
expect(dpTopDownJumpGame([100, 0])).toBeTruthy();
expect(dpTopDownJumpGame([2, 3, 1, 1, 4])).toBeTruthy();
expect(dpTopDownJumpGame([1, 1, 1, 1, 1])).toBeTruthy();
expect(dpTopDownJumpGame([1, 1, 1, 10, 1])).toBeTruthy();
expect(dpTopDownJumpGame([1, 5, 2, 1, 0, 2, 0])).toBeTruthy();
expect(dpTopDownJumpGame([1, 0])).toBe(true);
expect(dpTopDownJumpGame([100, 0])).toBe(true);
expect(dpTopDownJumpGame([2, 3, 1, 1, 4])).toBe(true);
expect(dpTopDownJumpGame([1, 1, 1, 1, 1])).toBe(true);
expect(dpTopDownJumpGame([1, 1, 1, 10, 1])).toBe(true);
expect(dpTopDownJumpGame([1, 5, 2, 1, 0, 2, 0])).toBe(true);
expect(dpTopDownJumpGame([1, 0, 1])).toBeFalsy();
expect(dpTopDownJumpGame([3, 2, 1, 0, 4])).toBeFalsy();
expect(dpTopDownJumpGame([0, 0, 0, 0, 0])).toBeFalsy();
expect(dpTopDownJumpGame([5, 4, 3, 2, 1, 0, 0])).toBeFalsy();
expect(dpTopDownJumpGame([1, 0, 1])).toBe(false);
expect(dpTopDownJumpGame([3, 2, 1, 0, 4])).toBe(false);
expect(dpTopDownJumpGame([0, 0, 0, 0, 0])).toBe(false);
expect(dpTopDownJumpGame([5, 4, 3, 2, 1, 0, 0])).toBe(false);
});
});

20
src/algorithms/uncategorized/jump-game/__test__/greedyJumpGame.test.js
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@@ -2,16 +2,16 @@ import greedyJumpGame from '../greedyJumpGame';
describe('greedyJumpGame', () => {
it('should solve Jump Game problem in greedy manner', () => {
expect(greedyJumpGame([1, 0])).toBeTruthy();
expect(greedyJumpGame([100, 0])).toBeTruthy();
expect(greedyJumpGame([2, 3, 1, 1, 4])).toBeTruthy();
expect(greedyJumpGame([1, 1, 1, 1, 1])).toBeTruthy();
expect(greedyJumpGame([1, 1, 1, 10, 1])).toBeTruthy();
expect(greedyJumpGame([1, 5, 2, 1, 0, 2, 0])).toBeTruthy();
expect(greedyJumpGame([1, 0])).toBe(true);
expect(greedyJumpGame([100, 0])).toBe(true);
expect(greedyJumpGame([2, 3, 1, 1, 4])).toBe(true);
expect(greedyJumpGame([1, 1, 1, 1, 1])).toBe(true);
expect(greedyJumpGame([1, 1, 1, 10, 1])).toBe(true);
expect(greedyJumpGame([1, 5, 2, 1, 0, 2, 0])).toBe(true);
expect(greedyJumpGame([1, 0, 1])).toBeFalsy();
expect(greedyJumpGame([3, 2, 1, 0, 4])).toBeFalsy();
expect(greedyJumpGame([0, 0, 0, 0, 0])).toBeFalsy();
expect(greedyJumpGame([5, 4, 3, 2, 1, 0, 0])).toBeFalsy();
expect(greedyJumpGame([1, 0, 1])).toBe(false);
expect(greedyJumpGame([3, 2, 1, 0, 4])).toBe(false);
expect(greedyJumpGame([0, 0, 0, 0, 0])).toBe(false);
expect(greedyJumpGame([5, 4, 3, 2, 1, 0, 0])).toBe(false);
});
});