[TESTS] getType.

lib/getType.js

@@ -21,11 +21,7 @@ var ITYPES = require( './itypes.js' );
 * @returns {String|Null} data type
 */
 function getType( x ) {
-	var type = ITYPES[ typeName( x ) ];
-	if ( type ) {
-		return type;
-	}
-	return null;
+	return ITYPES[ typeName( x ) ] || null;
 } // end FUNCTION getType()
 
 

test/test.getType.js

@@ -0,0 +1,59 @@
+/* global require, describe, it */
+'use strict';
+
+// MODULES //
+
+var // Expectation library:
+	chai = require( 'chai' ),
+
+	// Module to be tested:
+	getType = require( './../lib/getType.js' );
+
+
+// VARIABLES //
+
+var expect = chai.expect,
+	assert = chai.assert;
+
+
+// TESTS //
+
+describe( 'getType', function tests() {
+
+	it( 'should export a function', function test() {
+		expect( getType ).to.be.a( 'function' );
+	});
+
+	it( 'should correctly return the corresponding data type for a typed array', function test() {
+		assert.strictEqual( getType( new Int8Array( 10 ) ), 'int8', 'int8' );
+		assert.strictEqual( getType( new Uint8Array( 10 ) ), 'uint8', 'uint8' );
+		assert.strictEqual( getType( new Uint8ClampedArray( 10 ) ), 'uint8_clamped', 'uint8_clamped' );
+		assert.strictEqual( getType( new Int16Array( 10 ) ), 'int16', 'int16' );
+		assert.strictEqual( getType( new Uint16Array( 10 ) ), 'uint16', 'uint16' );
+		assert.strictEqual( getType( new Int32Array( 10 ) ), 'int32', 'int32' );
+		assert.strictEqual( getType( new Uint32Array( 10 ) ), 'uint32', 'uint32' );
+		assert.strictEqual( getType( new Float32Array( 10 ) ), 'float32', 'float32' );
+		assert.strictEqual( getType( new Float64Array( 10 ) ), 'float64', 'float64' );
+	});
+
+	it( 'should return null for unrecognized/unsupported input types', function test() {
+		var values = [
+			'5',
+			5,
+			NaN,
+			null,
+			undefined,
+			{},
+			function(){},
+			[],
+			new Number( 5 ),
+			new Boolean( 5 ),
+			new String( '5' )
+		];
+
+		for ( var i = 0; i < values.length; i++ ) {
+			assert.isNull( getType( values[ i ] ), values[ i ] );
+		}
+	});
+
+});