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$ curl repovive.com/roadmaps/javascript/testing-javascript/common-matchers

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$ curl repovive.com/roadmaps/javascript/testing-javascript/common-matchers

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Common Matchers - Testing JavaScript | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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Common Matchers

Ways to check values

Matchers define how to compare values:

expect(value).toBe(5);           // Strict equality
expect(value).toEqual({a: 1});   // Deep equality
expect(value).toBeTruthy();      // Truthy check
expect(value).toBeNull();        // Is null
expect(value).toBeDefined();     // Not undefined
expect(value).toContain('x');    // Array/string contains