Update validate function and fix tests

Author: Planeshifter

lib/node_modules/@stdlib/stats/kde2d/lib/validate.js

@@ -27,7 +27,8 @@ var isPositiveInteger = require( '@stdlib/assert/is-positive-integer' );
 var isPositiveNumberArray = require( '@stdlib/assert/is-positive-number-array' );
 var isFunction = require( '@stdlib/assert/is-function' );
 var isError = require( '@stdlib/assert/is-error' );
-var isNumber = require( '@stdlib/assert/is-number' );
+var isNumber = require( '@stdlib/assert/is-number' ).isPrimitive;
+var isnan = require( '@stdlib/assert/is-nan' );
 var getKernel = require( './get_kernel.js' );
 
 
@@ -68,7 +69,7 @@ function validate( opts, options ) {
 		if ( !isPositiveNumberArray( opts.h) ) {
 			return new TypeError( 'invaild option. `h` must be an array of positive values. Option: `' + opts.n + '`.');
 		}
-		if ( opts.h.length !== 2) {
+		if ( opts.h.length !== 2 ) {
 			return new TypeError( 'invalid option. `h` must be an array of length two. Option: `' + opts.n + '`.');
 		}
 	}
@@ -80,25 +81,25 @@ function validate( opts, options ) {
 	}
 	if ( hasOwnProp( options, 'xMax' ) ) {
 		opts.xMax = options.xMax;
-		if (!isNumber(opts.xMax)) {
+		if ( !isNumber( opts.xMax ) || isnan( opts.xMax ) ) {
 			return new TypeError( 'invalid option. `xMax` must be a number. Option: `' + opts.xMax + '`.' );
 		}
 	}
 	if ( hasOwnProp( options, 'xMin' ) ) {
 		opts.xMin = options.xMin;
-		if (!isNumber(opts.xMin)) {
+		if ( !isNumber( opts.xMin ) || isnan( opts.xMin ) ) {
 			return new TypeError( 'invalid option. `xMin` must be a number. Option: `' + opts.xMin + '`.' );
 		}
 	}
 	if ( hasOwnProp( options, 'yMax' ) ) {
 		opts.yMax = options.yMax;
-		if (!isNumber(opts.yMax)) {
+		if ( !isNumber( opts.yMax ) || isnan( opts.yMax ) ) {
 			return new TypeError( 'invalid option. `yMax` must be a number. Option: `' + opts.yMax + '`.' );
 		}
 	}
 	if ( hasOwnProp( options, 'yMin' ) ) {
 		opts.yMin = options.yMin;
-		if (!isNumber(opts.yMin)) {
+		if ( !isNumber( opts.yMin ) || isnan( opts.yMin ) ) {
 			return new TypeError( 'invalid option. `yMin` must be a number. Option: `' + opts.yMin + '`.' );
 		}
 	}

lib/node_modules/@stdlib/stats/kde2d/test/test.validate.js

@@ -21,6 +21,7 @@
 // MODULES //
 
 var tape = require( 'tape' );
+var gaussian = require( './../lib/gaussian.js' );
 var validate = require( './../lib/validate.js' );
 
 
@@ -93,7 +94,7 @@ tape( 'the function returns a type error if provided an `h` option which is not
 	t.end();
 });
 
-tape( 'the function returns a type error if provided an `h` option that is a positiveNumberArray not of length 2', function test( t ) {
+tape( 'the function returns a type error if provided an `h` option that is a positive number array not of length two', function test( t ) {
 	var values;
 	var err;
 	var i;
@@ -321,7 +322,7 @@ tape( 'the function returns a type error if provided a `kernel` option that does
 	t.end();
 });
 
-tape( 'the function returns a type error if provided a `kernel` option not a string or function', function test( t ) {
+tape( 'the function returns a type error if provided a `kernel` option that is not a string or function', function test( t ) {
 	var values;
 	var err;
 	var i;
@@ -349,7 +350,7 @@ tape( 'the function returns `null` if all options are valid', function test( t )
 	var err;
 
 	options = {
-		'h': [0.1, 0.1],
+		'h': [ 0.1, 0.1 ],
 		'n': 35,
 		'xMin': 35,
 		'xMax': 40,
@@ -360,10 +361,13 @@ tape( 'the function returns `null` if all options are valid', function test( t )
 	opts = {};
 
 	expected = {
-		'h': options.h,
+		'h': [ 0.1, 0.1 ],
 		'n': options.n,
-		'xLim': options.xLim,
-		'yLim': options.yLim
+		'xMin': options.xMin,
+		'xMax': options.xMax,
+		'yMin': options.yMin,
+		'yMax': options.yMax,
+		'kernel': gaussian
 	};
 
 	err = validate( opts, options );