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* @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 isPositiveInteger = require( '@stdlib/assert/is-positive-integer' );
var isObject = require( '@stdlib/assert/is-plain-object' );
var isBoolean = require( '@stdlib/assert/is-boolean' ).isPrimitive;
var hasOwnProp = require( '@stdlib/assert/has-own-property' );
var roundn = require( '@stdlib/math/base/special/roundn' );
var format = require( '@stdlib/string/format' );
// MAIN //
/**
* Pretty-print output of test.
*
* @param {Object} [opts] - options object
* @param {PositiveInteger} [opts.digits=4] - number of digits after the decimal point
* @param {boolean} [opts.decision=true] - boolean indicating whether to print the test decision
* @throws {TypeError} options argument must be an object
* @throws {TypeError} must provide valid options
* @returns {string} formatted output
*/
function print( opts ) { // eslint-disable-line stdlib/no-redeclare
/* eslint-disable no-invalid-this */
var decision;
var dgts;
var str;
dgts = 4;
decision = true;
if ( arguments.length > 0 ) {
if ( !isObject( opts ) ) {
throw new TypeError( format( 'invalid argument. First argument must be an object. Value: `%s`.', opts ) );
}
if ( hasOwnProp( opts, 'digits' ) ) {
if ( !isPositiveInteger( opts.digits ) ) {
throw new TypeError( format( 'invalid option. `%s` option must be a positive integer. Option: `%s`.', 'digits', opts.digits ) );
}
dgts = opts.digits;
}
if ( hasOwnProp( opts, 'decision' ) ) {
if ( !isBoolean( opts.decision ) ) {
throw new TypeError( format( 'invalid option. `%s` option must be a boolean. Option: `%s`.', 'decision', opts.decision ) );
}
decision = opts.decision;
}
}
str = '';
str += this.method;
str += '\n\n';
str += 'Null hypothesis: the CDF of `x` is ';
switch ( this.alternative ) {
case 'less':
str += 'greater than or equal to ';
break;
case 'greater':
str += 'less than or equal to ';
break;
case 'two-sided':
default:
str += 'equal to ';
break;
}
str += 'the reference CDF';
str += '\n\n';
str += ' pValue: ' + roundn( this.pValue, -dgts ) + '\n';
str += ' statistic: ' + roundn( this.statistic, -dgts );
str += '\n\n';
if ( decision ) {
str += 'Test Decision: ';
if ( this.rejected ) {
str += 'Reject null in favor of alternative at ' + (this.alpha*100) + '% significance level';
} else {
str += 'Fail to reject null in favor of alternative at ' + (this.alpha*100) + '% significance level';
}
str += '\n';
}
return str;
}
// EXPORTS //
module.exports = print;
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