/**

* @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 replace = require( './../lib' );

// TESTS //

tape( 'main export is a function', function test( t ) {

t.ok( true, __filename );

t.strictEqual( typeof replace, 'function', 'main export is a function' );

t.end();

});

tape( 'the function throws an error if the first argument is not a string', function test( t ) {

var values;

var i;

values = [

5,

null,

true,

false,

void 0,

NaN,

[],

{},

function noop() {},

/ /g

];

for ( i = 0; i < values.length; i++ ) {

t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );

}

t.end();

function badValue( value ) {

return function badValue() {

replace( value, '', '' );

};

}

});

tape( 'the function throws an error if the second argument is not a string or regular expression', function test( t ) {

var values;

var i;

values = [

5,

null,

true,

false,

void 0,

NaN,

[],

{},

function noop() {}

];

for ( i = 0; i < values.length; i++ ) {

t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );

}

t.end();

function badValue( value ) {

return function badValue() {

replace( 'string', value, '' );

};

}

});

tape( 'the function throws an error if the third argument is not a function or string', function test( t ) {

var values;

var i;

values = [

5,

null,

true,

false,

void 0,

NaN,

[],

{}

];

for ( i = 0; i < values.length; i++ ) {

t.throws( badValue( values[i] ), TypeError, 'throws an error when provided '+values[i] );

}

t.end();

function badValue( value ) {

return function badValue() {

replace( 'string', 'str', value );

};

}

});

tape( 'the function replaces all occurrences of a string search value', function test( t ) {

var out;

out = replace( 'abc abc abc', 'b', '' );

t.strictEqual( out, 'ac ac ac', 'returns expected value' );

out = replace( 'abc abc abc', 'b', 'cd' );

t.strictEqual( out, 'acdc acdc acdc', 'returns expected value' );

out = replace( 'Et tu, Brute?', 'Brute?', 'Caesar?' );

t.strictEqual( out, 'Et tu, Caesar?', 'returns expected value' );

t.end();

});

tape( 'the function replaces matches of a regular expression', function test( t ) {

var expected;

var out;

out = replace( 'aBcDeFgHiJkLmNoPqRsTuVwXYZ', /[A-Z]+/, '' );

expected = 'acDeFgHiJkLmNoPqRsTuVwXYZ';

t.strictEqual( out, expected, 'replaces letters matching the regular expression (first occurrence)' );

out = replace( 'aBcDeFgHiJkLmNoPqRsTuVwXYZ', /[A-Z]+/g, '' );

expected = 'acegikmoqsuw';

t.strictEqual( out, expected, 'replaces letters matching the regular expression (global)' );

t.end();

});

tape( 'the function replaces matches with values returned by a replacer function', function test( t ) {

var expected;

var out;

var str;

str = 'Oranges and lemons say the bells of St. Clement\'s';

out = replace( str, /([^\s]+)/gi, replacer );

expected = '/Oranges/ /and/ /lemons/ /say/ /the/ /bells/ /of/ /St./ /Clement\'s/';

t.strictEqual( out, expected, 'replaces matches using replacer function' );

t.end();

function replacer( match, p1 ) {

return '/' + p1 + '/';

}

});