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			26 lines
		
	
	
	
		
			1,008 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			26 lines
		
	
	
	
		
			1,008 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| test("length is 1", () => {
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|     expect(Array.isArray).toHaveLength(1);
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| });
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| 
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| test("arguments that evaluate to false", () => {
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|     expect(Array.isArray()).toBeFalse();
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|     expect(Array.isArray("1")).toBeFalse();
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|     expect(Array.isArray("foo")).toBeFalse();
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|     expect(Array.isArray(1)).toBeFalse();
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|     expect(Array.isArray(1, 2, 3)).toBeFalse();
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|     expect(Array.isArray(undefined)).toBeFalse();
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|     expect(Array.isArray(null)).toBeFalse();
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|     expect(Array.isArray(Infinity)).toBeFalse();
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|     expect(Array.isArray({})).toBeFalse();
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| });
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| 
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| test("arguments that evaluate to true", () => {
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|     expect(Array.isArray([])).toBeTrue();
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|     expect(Array.isArray([1])).toBeTrue();
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|     expect(Array.isArray([1, 2, 3])).toBeTrue();
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|     expect(Array.isArray(new Array())).toBeTrue();
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|     expect(Array.isArray(new Array(10))).toBeTrue();
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|     expect(Array.isArray(new Array("a", "b", "c"))).toBeTrue();
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|     // FIXME: Array.prototype is supposed to be an array!
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|     // expect(Array.isArray(Array.prototype)).toBeTrue();
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| });
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