33 lines
821 B
JavaScript
33 lines
821 B
JavaScript
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describe( 'coalescy', function () {
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beforeEach( function () {
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this.coalesce = require( '../index' );
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} );
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it( 'should return the first non null value', function () {
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var result = this.coalesce( null, [] );
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expect( result ).to.deep.equal( [] );
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result = this.coalesce( null, {} );
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expect( result ).to.deep.equal( {} );
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result = this.coalesce( null, [], {} );
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expect( result ).to.deep.equal( [] );
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result = this.coalesce( null, undefined, 0, {} );
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expect( result ).to.equal( 0 );
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var a = null,
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b,
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c = 0,
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d = 1;
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result = this.coalesce( a, b, c, d );
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expect( result ).to.equal( 0 );
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} );
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it( 'should return null when no arguments are passed', function () {
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var result = this.coalesce();
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expect( result ).to.equal( null );
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} );
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} );
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