Add tests

Author: kgryte

lib/node_modules/@stdlib/array/complex64/test/test.from.js

@@ -545,6 +545,85 @@ tape( 'the method supports providing a "map" function which is invoked for each
 	}
 });
 
+tape( 'the method supports providing a `this` context for a provided map function', function test( t ) {
+	var arr;
+	var ctx;
+
+	ctx = {
+		'count': 0
+	};
+	arr = Complex64Array.from( [ 1.0, 2.0, 3.0, 4.0 ], clbk, ctx );
+	t.strictEqual( arr instanceof Complex64Array, true, 'returns expected value' );
+	t.strictEqual( ctx.count, 4, 'returns expected value' );
+
+	t.end();
+
+	function clbk( v ) {
+		this.count += 1; // eslint-disable-line no-invalid-this
+		return v;
+	}
+});
+
+tape( 'the method supports providing a `this` context for a provided map function (iterable)', function test( t ) {
+	var Complex64Array;
+	var iter;
+	var ctx;
+	var arr;
+
+	Complex64Array = proxyquire( './../lib/main.js', {
+		'@stdlib/assert/has-iterator-symbol-support': hasSupport,
+		'@stdlib/symbol/iterator': '__SYMBOL_ITERATOR__'
+	});
+
+	iter = {
+		'next': next,
+		'i': 0,
+		'N': 4
+	};
+	ctx = {
+		'count': 0
+	};
+
+	arr = Complex64Array.from( createIterable( iter ), clbk, ctx );
+	t.strictEqual( arr instanceof Complex64Array, true, 'returns expected value' );
+	t.strictEqual( ctx.count, 4, 'returns expected value' );
+
+	t.end();
+
+	function hasSupport() {
+		return true;
+	}
+
+	function createIterable( iterator ) {
+		var it = {};
+		it[ '__SYMBOL_ITERATOR__' ] = iterable;
+		return it;
+
+		function iterable() {
+			return iterator;
+		}
+	}
+
+	function next() {
+		iter.i += 1;
+		if ( iter.i <= iter.N ) {
+			return {
+				'value': [ 1.0, 1.0 ]
+			};
+		}
+		return {
+			'done': true
+		};
+	}
+
+	function clbk( v ) {
+		this.count += 1; // eslint-disable-line no-invalid-this
+		v[ 0 ] += 1.0;
+		v[ 1 ] += 1.0;
+		return v;
+	}
+});
+
 tape( 'the method throws an error if provided an array-like object having an odd length', function test( t ) {
 	var values;
 	var i;