/*
* @license Apache-2.0
*
* Copyright (c) 2026 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 unflatten = require( './index' );


// TESTS //

// The function returns an ndarray...
{
	const x = zeros( [ 6 ], {
		'dtype': 'float64'
	});

	unflatten( x, 0, [ 2, 3 ] ); // $ExpectType float64ndarray
}

// The compiler throws an error if the function is not provided a first argument which is an ndarray...
{
	unflatten( '5', 0, [ 2, 3 ] ); // $ExpectError
	unflatten( 5, 0, [ 2, 3 ] ); // $ExpectError
	unflatten( true, 0, [ 2, 3 ] ); // $ExpectError
	unflatten( false, 0, [ 2, 3 ] ); // $ExpectError
	unflatten( null, 0, [ 2, 3 ] ); // $ExpectError
	unflatten( {}, 0, [ 2, 3 ] ); // $ExpectError
	unflatten( [ '5' ], 0, [ 2, 3 ] ); // $ExpectError
	unflatten( ( x: number ): number => x, 0, [ 2, 3 ] ); // $ExpectError
}

// The compiler throws an error if the function is not provided a second argument which is a number...
{
	const x = zeros( [ 6 ], {
		'dtype': 'float64'
	});

	unflatten( x, '5', [ 2, 3 ] ); // $ExpectError
	unflatten( x, true, [ 2, 3 ] ); // $ExpectError
	unflatten( x, false, [ 2, 3 ] ); // $ExpectError
	unflatten( x, null, [ 2, 3 ] ); // $ExpectError
	unflatten( x, {}, [ 2, 3 ] ); // $ExpectError
	unflatten( x, [ '5' ], [ 2, 3 ] ); // $ExpectError
	unflatten( x, ( x: number ): number => x, [ 2, 3 ] ); // $ExpectError
}

// The compiler throws an error if the function is not provided a third argument which is an array-like object of numbers...
{
	const x = zeros( [ 6 ], {
		'dtype': 'float64'
	});

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

// The compiler throws an error if the function is provided an unsupported number of arguments...
{
	const x = zeros( [ 6 ], {
		'dtype': 'float64'
	});

	unflatten(); // $ExpectError
	unflatten( x ); // $ExpectError
	unflatten( x, 0 ); // $ExpectError
	unflatten( x, 0, [ 2, 3 ], {} ); // $ExpectError
}