test.js

/**
* @license Apache-2.0
*
* Copyright (c) 2023 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
*    http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

'use strict';

// MODULES //

var tape = require( 'tape' );
var add = require( '@stdlib/math/base/ops/add' );
var zerosnd = require( '@stdlib/array/base/zerosnd' );
var binarynd = require( './../lib' );


// TESTS //

tape( 'main export is a function', function test( t ) {
	t.ok( true, __filename );
	t.strictEqual( typeof binarynd, 'function', 'main export is a function' );
	t.end();
});

tape( 'the function applies a provided callback to nested input arrays and assigns results to a nested output array (0d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [];
	x = [];
	y = [];

	expected = [];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();
});

tape( 'the function applies a provided callback to nested input arrays and assigns results to a nested output array (1d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2 ];
	x = [ 1.0, 2.0 ];
	y = [ 3.0, 4.0 ];

	expected = [ 4.0, 6.0 ];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();
});

tape( 'the function applies a provided callback to nested input arrays and assigns results to a nested output array (2d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2 ];
	x = [
		[ 1.0, 2.0 ],
		[ 3.0, 4.0 ]
	];
	y = [
		[ 5.0, 6.0 ],
		[ 7.0, 8.0 ]
	];

	expected = [
		[ 6.0, 8.0 ],
		[ 10.0, 12.0 ]
	];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );

	shape = [ 2, 3 ];
	x = [
		[ 1.0, 2.0, 3.0 ],
		[ 3.0, 4.0, 5.0 ]
	];
	y = [
		[ 1.0, 2.0, 3.0 ],
		[ 3.0, 4.0, 5.0 ]
	];

	expected = [
		[ 2.0, 4.0, 6.0 ],
		[ 6.0, 8.0, 10.0 ]
	];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();
});

tape( 'the function applies a provided callback to nested input arrays and assigns results to a nested output array (3d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2 ];
	x = [
		[
			[ 1.0, 2.0 ],
			[ 3.0, 4.0 ]
		],
		[
			[ 1.0, 2.0 ],
			[ 3.0, 4.0 ]
		]
	];
	y = [
		[
			[ 5.0, 6.0 ],
			[ 7.0, 8.0 ]
		],
		[
			[ 5.0, 6.0 ],
			[ 7.0, 8.0 ]
		]
	];

	expected = [
		[
			[ 6.0, 8.0 ],
			[ 10.0, 12.0 ]
		],
		[
			[ 6.0, 8.0 ],
			[ 10.0, 12.0 ]
		]
	];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );

	shape = [ 2, 2, 3 ];
	x = [
		[
			[ 1.0, 2.0, 3.0 ],
			[ 3.0, 4.0, 5.0 ]
		],
		[
			[ 1.0, 2.0, 3.0 ],
			[ 3.0, 4.0, 5.0 ]
		]
	];
	y = [
		[
			[ 1.0, 2.0, 3.0 ],
			[ 3.0, 4.0, 5.0 ]
		],
		[
			[ 1.0, 2.0, 3.0 ],
			[ 3.0, 4.0, 5.0 ]
		]
	];

	expected = [
		[
			[ 2.0, 4.0, 6.0 ],
			[ 6.0, 8.0, 10.0 ]
		],
		[
			[ 2.0, 4.0, 6.0 ],
			[ 6.0, 8.0, 10.0 ]
		]
	];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();
});

tape( 'the function applies a provided callback to nested input arrays and assigns results to a nested output array (4d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2 ];
	x = [
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		],
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		]
	];
	y = [
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		],
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		]
	];

	expected = [
		[
			[
				[ 2.0, 4.0 ],
				[ 6.0, 8.0 ]
			],
			[
				[ 2.0, 4.0 ],
				[ 6.0, 8.0 ]
			]
		],
		[
			[
				[ 2.0, 4.0 ],
				[ 6.0, 8.0 ]
			],
			[
				[ 2.0, 4.0 ],
				[ 6.0, 8.0 ]
			]
		]
	];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );

	shape = [ 1, 2, 2, 3 ];
	x = [
		[
			[
				[ 1.0, 2.0, 3.0 ],
				[ 3.0, 4.0, 5.0 ]
			],
			[
				[ 1.0, 2.0, 3.0 ],
				[ 3.0, 4.0, 5.0 ]
			]
		]
	];
	y = [
		[
			[
				[ 1.0, 2.0, 3.0 ],
				[ 3.0, 4.0, 5.0 ]
			],
			[
				[ 1.0, 2.0, 3.0 ],
				[ 3.0, 4.0, 5.0 ]
			]
		]
	];

	expected = [
		[
			[
				[ 2.0, 4.0, 6.0 ],
				[ 6.0, 8.0, 10.0 ]
			],
			[
				[ 2.0, 4.0, 6.0 ],
				[ 6.0, 8.0, 10.0 ]
			]
		]
	];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();
});

tape( 'the function applies a provided callback to nested input arrays and assigns results to a nested output array', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 1, 1, 1, 1, 3 ];
	x = [
		[
			[
				[
					[ 1.0, 1.0, 1.0 ]
				]
			]
		]
	];
	y = [
		[
			[
				[
					[ 1.0, 1.0, 1.0 ]
				]
			]
		]
	];

	expected = [
		[
			[
				[
					[ 2.0, 2.0, 2.0 ]
				]
			]
		]
	];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );

	shape = [ 2, 1, 2, 3, 1 ];
	x = [
		[
			[
				[
					[ 1.0 ],
					[ 1.0 ],
					[ 1.0 ]
				],
				[
					[ 1.0 ],
					[ 1.0 ],
					[ 1.0 ]
				]
			]
		],
		[
			[
				[
					[ 1.0 ],
					[ 1.0 ],
					[ 1.0 ]
				],
				[
					[ 1.0 ],
					[ 1.0 ],
					[ 1.0 ]
				]
			]
		]
	];
	y = [
		[
			[
				[
					[ 1.0 ],
					[ 1.0 ],
					[ 1.0 ]
				],
				[
					[ 1.0 ],
					[ 1.0 ],
					[ 1.0 ]
				]
			]
		],
		[
			[
				[
					[ 1.0 ],
					[ 1.0 ],
					[ 1.0 ]
				],
				[
					[ 1.0 ],
					[ 1.0 ],
					[ 1.0 ]
				]
			]
		]
	];

	expected = [
		[
			[
				[
					[ 2.0 ],
					[ 2.0 ],
					[ 2.0 ]
				],
				[
					[ 2.0 ],
					[ 2.0 ],
					[ 2.0 ]
				]
			]
		],
		[
			[
				[
					[ 2.0 ],
					[ 2.0 ],
					[ 2.0 ]
				],
				[
					[ 2.0 ],
					[ 2.0 ],
					[ 2.0 ]
				]
			]
		]
	];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );

	shape = [ 1, 2, 2, 3, 2 ];
	x = [
		[
			[
				[
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ]
				],
				[
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ]
				]
			],
			[
				[
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ]
				],
				[
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ]
				]
			]
		]
	];
	y = [
		[
			[
				[
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ]
				],
				[
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ]
				]
			],
			[
				[
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ]
				],
				[
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ],
					[ 1.0, 1.0 ]
				]
			]
		]
	];

	expected = [
		[
			[
				[
					[ 2.0, 2.0 ],
					[ 2.0, 2.0 ],
					[ 2.0, 2.0 ]
				],
				[
					[ 2.0, 2.0 ],
					[ 2.0, 2.0 ],
					[ 2.0, 2.0 ]
				]
			],
			[
				[
					[ 2.0, 2.0 ],
					[ 2.0, 2.0 ],
					[ 2.0, 2.0 ]
				],
				[
					[ 2.0, 2.0 ],
					[ 2.0, 2.0 ],
					[ 2.0, 2.0 ]
				]
			]
		]
	];

	z = zerosnd( shape );
	binarynd( [ x, y, z ], shape, add );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();
});

tape( 'the function does not invoke a provided callback if provided a shape having a first element equal to zero (1d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2 ];
	x = [ 1.0, 2.0 ];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 0 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a first element equal to zero (2d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2 ];
	x = [
		[ 1.0, 2.0 ],
		[ 3.0, 4.0 ]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 0, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a second element equal to zero (2d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2 ];
	x = [
		[ 1.0, 2.0 ],
		[ 3.0, 4.0 ]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 0 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a first element equal to zero (3d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2 ];
	x = [
		[
			[ 1.0, 2.0 ],
			[ 3.0, 4.0 ]
		],
		[
			[ 1.0, 2.0 ],
			[ 3.0, 4.0 ]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 0, 2, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a second element equal to zero (3d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2 ];
	x = [
		[
			[ 1.0, 2.0 ],
			[ 3.0, 4.0 ]
		],
		[
			[ 1.0, 2.0 ],
			[ 3.0, 4.0 ]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 0, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a third element equal to zero (3d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2 ];
	x = [
		[
			[ 1.0, 2.0 ],
			[ 3.0, 4.0 ]
		],
		[
			[ 1.0, 2.0 ],
			[ 3.0, 4.0 ]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 2, 0 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a first element equal to zero (4d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2 ];
	x = [
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		],
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 0, 2, 2, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a second element equal to zero (4d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2 ];
	x = [
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		],
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 0, 2, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a third element equal to zero (4d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2 ];
	x = [
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		],
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 2, 0, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a fourth element equal to zero (4d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2 ];
	x = [
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		],
		[
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			],
			[
				[ 1.0, 2.0 ],
				[ 3.0, 4.0 ]
			]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 2, 2, 0 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a first element equal to zero (5d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2, 2 ];
	x = [
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		],
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 0, 2, 2, 2, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a second element equal to zero (5d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2, 2 ];
	x = [
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		],
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 0, 2, 2, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a third element equal to zero (5d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2, 2 ];
	x = [
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		],
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 2, 0, 2, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a fourth element equal to zero (5d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2, 2 ];
	x = [
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		],
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 2, 2, 0, 2 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});

tape( 'the function does not invoke a provided callback if provided a shape having a fifth element equal to zero (5d)', function test( t ) {
	var expected;
	var shape;
	var x;
	var y;
	var z;

	shape = [ 2, 2, 2, 2, 2 ];
	x = [
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		],
		[
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			],
			[
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				],
				[
					[ 1.0, 2.0 ],
					[ 3.0, 4.0 ]
				]
			]
		]
	];
	y = x;

	expected = zerosnd( shape );

	z = zerosnd( shape );
	binarynd( [ x, y, z ], [ 2, 2, 2, 2, 0 ], clbk );

	t.deepEqual( z, expected, 'returns expected value' );
	t.end();

	function clbk() {
		t.ok( false, 'should not invoke callback' );
	}
});