text: /**
  * @license Apache-2.0
  *
  * Copyright (c) 2018 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 rand = require( '@stdlib/random-base-hypergeometric' );
  var validate = require( './../lib/validate.js' );
  
  
  // TESTS //
  
  tape( 'main export is a function', function test( t ) {
  	t.ok( true, __filename );
  	t.equal( typeof validate, 'function', 'main export is a function' );
  	t.end();
  });
  
  tape( 'the function returns an error if provided an options argument which is not an object', function test( t ) {
  	var values;
  	var err;
  	var i;
  
  	values = [
  		'5',
  		5,
  		NaN,
  		true,
  		false,
  		void 0,
  		null,
  		[],
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		err = validate( {}, values[ i ] );
  		t.equals( err instanceof TypeError, true, 'returns a type error when provided '+values[i] );
  	}
  	t.end();
  });
  
  tape( 'the function returns an error if provided an `objectMode` option which is not a boolean primitive', function test( t ) {
  	var values;
  	var err;
  	var i;
  
  	values = [
  		'5',
  		5,
  		NaN,
  		void 0,
  		null,
  		[],
  		{},
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		err = validate( {}, {
  			'objectMode': values[ i ]
  		});
  		t.equal( err instanceof TypeError, true, 'returns a type error when provided '+values[i] );
  	}
  	t.end();
  });
  
  tape( 'the function returns an error if provided a `highWaterMark` option which is not a nonnegative number', function test( t ) {
  	var values;
  	var err;
  	var i;
  
  	values = [
  		'5',
  		-5,
  		NaN,
  		true,
  		false,
  		void 0,
  		null,
  		[],
  		{},
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		err = validate( {}, {
  			'highWaterMark': values[ i ]
  		});
  		t.equal( err instanceof TypeError, true, 'returns a type error when provided '+values[i] );
  	}
  	t.end();
  });
  
  tape( 'the function returns an error if provided an `encoding` option which is neither a string nor `null`', function test( t ) {
  	var values;
  	var err;
  	var i;
  
  	values = [
  		5,
  		NaN,
  		true,
  		false,
  		void 0,
  		[],
  		{},
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		err = validate( {}, {
  			'encoding': values[ i ]
  		});
  		t.equal( err instanceof TypeError, true, 'returns a type error when provided '+values[i] );
  	}
  	t.end();
  });
  
  tape( 'the function returns an error if provided a `sep` option which is not a string', function test( t ) {
  	var values;
  	var err;
  	var i;
  
  	values = [
  		5,
  		NaN,
  		true,
  		false,
  		null,
  		void 0,
  		[],
  		{},
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		err = validate( {}, {
  			'sep': values[ i ]
  		});
  		t.equal( err instanceof TypeError, true, 'returns a type error when provided '+values[i] );
  	}
  	t.end();
  });
  
  tape( 'the function returns an error if provided an `siter` option which is not a positive integer', function test( t ) {
  	var values;
  	var err;
  	var i;
  
  	values = [
  		'5',
  		-5,
  		3.14,
  		NaN,
  		true,
  		false,
  		void 0,
  		null,
  		[],
  		{},
  		function noop() {}
  	];
  
  	for ( i = 0; i < values.length; i++ ) {
  		err = validate( {}, {
  			'siter': values[ i ]
  		});
  		t.equal( err instanceof TypeError, true, 'returns a type error when provided '+values[i] );
  	}
  	t.end();
  });
  
  tape( 'the function sets the `iter` option', function test( t ) {
  	var options;
  	var opts;
  	var err;
  
  	opts = {};
  	options = {
  		'iter': 10
  	};
  
  	err = validate( opts, options );
  	t.equal( err, null, 'returns expected value' );
  	t.deepEqual( opts, options, 'sets option values' );
  	t.end();
  });
  
  tape( 'the function sets the `prng` option', function test( t ) {
  	var options;
  	var opts;
  	var err;
  
  	opts = {};
  	options = {
  		'prng': rand.PRNG
  	};
  
  	err = validate( opts, options );
  	t.equal( err, null, 'returns expected value' );
  	t.deepEqual( opts, options, 'sets option values' );
  	t.end();
  });
  
  tape( 'the function sets the `seed` option', function test( t ) {
  	var options;
  	var opts;
  	var err;
  
  	opts = {};
  	options = {
  		'seed': rand.seed
  	};
  
  	err = validate( opts, options );
  	t.equal( err, null, 'returns expected value' );
  	t.deepEqual( opts, options, 'sets option values' );
  	t.end();
  });
  
  tape( 'the function sets the `state` option', function test( t ) {
  	var options;
  	var opts;
  	var err;
  
  	opts = {};
  	options = {
  		'state': rand.state
  	};
  
  	err = validate( opts, options );
  	t.equal( err, null, 'returns expected value' );
  	t.deepEqual( opts, options, 'sets option values' );
  	t.end();
  });
  
  tape( 'the function sets the `copy` option', function test( t ) {
  	var options;
  	var opts;
  	var err;
  
  	opts = {};
  	options = {
  		'copy': true
  	};
  
  	err = validate( opts, options );
  	t.equal( err, null, 'returns expected value' );
  	t.deepEqual( opts, options, 'sets option values' );
  	t.end();
  });
  
  tape( 'the function returns null if all options are valid', function test( t ) {
  	var options;
  	var opts;
  	var err;
  
  	options = {
  		'objectMode': true,
  		'highWaterMark': 64,
  		'encoding': null,
  		'sep': '\n',
  		'siter': 10,
  		'iter': 100,
  		'state': rand.state,
  		'seed': rand.seed,
  		'prng': rand.PRNG,
  		'copy': true
  	};
  	opts = {};
  	err = validate( opts, options );
  
  	t.equal( err, null, 'returns null' );
  	t.deepEqual( opts, options, 'sets option values' );
  
  	options = {
  		'objectMode': false,
  		'highWaterMark': 64,
  		'encoding': 'utf8',
  		'sep': '\t',
  		'siter': 10,
  		'iter': 100,
  		'state': rand.state,
  		'seed': rand.seed,
  		'prng': rand.PRNG,
  		'copy': false
  	};
  	opts = {};
  	err = validate( opts, options );
  
  	t.equal( err, null, 'returns null' );
  	t.deepEqual( opts, options, 'sets option values' );
  
  	t.end();
  });
  
  tape( 'the function ignores unrecognized/unsupported options', function test( t ) {
  	var options;
  	var opts;
  	var err;
  
  	options = {
  		'beep': true,
  		'boop': 'bop'
  	};
  	opts = {};
  	err = validate( opts, options );
  
  	t.equal( err, null, 'returns null' );
  	t.deepEqual( opts, {}, 'does not set any option values' );
  	t.end();
  });
  