/*
* @license Apache-2.0
*
* Copyright (c) 2022 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.
*/

/* eslint-disable space-in-parens */

import zeros = require( './../../../../zeros' );
import expandDimensions = require( './index' );


// TESTS //

// The function returns an ndarray...
{
	const x = zeros( [ 2, 2 ], {
		'dtype': 'float64'
	});

	expandDimensions( x, 1, false ); // $ExpectType float64ndarray
}

// The compiler throws an error if the function is not provided a first argument which is an ndarray...
{
	expandDimensions( '5', 1, false ); // $ExpectError
	expandDimensions( 5, 1, false ); // $ExpectError
	expandDimensions( true, 1, false ); // $ExpectError
	expandDimensions( false, 1, false ); // $ExpectError
	expandDimensions( void 0, 1, false ); // $ExpectError
	expandDimensions( null, 1, false ); // $ExpectError
	expandDimensions( {}, 1, false ); // $ExpectError
	expandDimensions( [ '5' ], 1, false ); // $ExpectError
	expandDimensions( ( x: number ): number => x, 1, false ); // $ExpectError
}

// The compiler throws an error if the function is not provided a second argument which is a number...
{
	const x = zeros( [ 2, 2 ] );

	expandDimensions( x, '5', false ); // $ExpectError
	expandDimensions( x, true, false ); // $ExpectError
	expandDimensions( x, false, false ); // $ExpectError
	expandDimensions( x, void 0, false ); // $ExpectError
	expandDimensions( x, null, false ); // $ExpectError
	expandDimensions( x, {}, false ); // $ExpectError
	expandDimensions( x, [ '5' ], false ); // $ExpectError
	expandDimensions( x, ( x: number ): number => x, false ); // $ExpectError
}

// The compiler throws an error if the function is not provided a third argument which is a boolean...
{
	const x = zeros( [ 2, 2 ] );

	expandDimensions( x, 1, '5' ); // $ExpectError
	expandDimensions( x, 1, 5 ); // $ExpectError
	expandDimensions( x, 1, void 0 ); // $ExpectError
	expandDimensions( x, 1, null ); // $ExpectError
	expandDimensions( x, 1, {} ); // $ExpectError
	expandDimensions( x, 1, [ '5' ] ); // $ExpectError
	expandDimensions( x, 1, ( x: number ): number => x ); // $ExpectError
}

// The compiler throws an error if the function is provided an unsupported number of arguments...
{
	const x = zeros( [ 2, 2 ] );

	expandDimensions(); // $ExpectError
	expandDimensions( x ); // $ExpectError
	expandDimensions( x, 1 ); // $ExpectError
	expandDimensions( x, 1, false, [ 1, 2, 3 ] ); // $ExpectError
}