test: add missing test cases

Author: headlessNode

lib/node_modules/@stdlib/ndarray/flatten-by/lib/index.js

@@ -22,7 +22,7 @@
 * Flatten an ndarray according to a callback function.
 *
 * @module @stdlib/ndarray/flatten-by
-*s
+*
 * @example
 * var array = require( '@stdlib/ndarray/array' );
 * var ndarray2array = require( '@stdlib/ndarray/to-array' );

lib/node_modules/@stdlib/ndarray/flatten-by/test/test.js

@@ -139,6 +139,69 @@ tape( 'the function throws an error if provided an options argument which is not
 	}
 });
 
+tape( 'the function throws an error if provided an invalid `depth` option', function test( t ) {
+	var values;
+	var opts;
+	var i;
+
+	values = [
+		'5',
+		-5,
+		NaN,
+		true,
+		false,
+		null,
+		void 0,
+		[],
+		{},
+		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() {
+			opts = {
+				'depth': value
+			};
+			flattenBy( zeros( [ 2 ] ), opts, clbk );
+		};
+	}
+});
+
+tape( 'the function throws an error if provided an invalid `order` option', function test( t ) {
+	var values;
+	var opts;
+	var i;
+
+	values = [
+		'5',
+		NaN,
+		true,
+		false,
+		null,
+		void 0,
+		[],
+		{},
+		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() {
+			opts = {
+				'order': value
+			};
+			flattenBy( zeros( [ 2 ] ), opts, clbk );
+		};
+	}
+});
+
 tape( 'by default, the function flattens all dimensions of a provided input ndarray in lexicographic order (row-major, contiguous)', function test( t ) {
 	var expected;
 	var xbuf;