Add tests

Author: kgryte

lib/node_modules/@stdlib/iter/shift/test/test.js

@@ -394,6 +394,57 @@ tape( 'the function returns an iterator protocol-compliant object (value+done)',
 	t.end();
 });
 
+tape( 'the function returns an iterator protocol-compliant object (value+done; single element iterator)', function test( t ) {
+	var expected;
+	var values;
+	var actual;
+	var it;
+	var i;
+
+	values = [ 1 ];
+	expected = [
+		{
+			'done': true
+		}
+	];
+
+	it = iterShift( createIterator( values ) );
+	t.equal( it.next.length, 0, 'has zero arity' );
+
+	actual = [];
+	for ( i = 0; i < expected.length; i++ ) {
+		actual.push( it.next() );
+	}
+	t.deepEqual( actual, expected, 'returns expected values' );
+	t.end();
+});
+
+tape( 'the function returns an iterator protocol-compliant object (value+done; two element iterator)', function test( t ) {
+	var expected;
+	var values;
+	var actual;
+	var it;
+	var i;
+
+	values = [ 1, 2 ];
+	expected = [
+		{
+			'value': 2,
+			'done': true
+		}
+	];
+
+	it = iterShift( createIterator( values ) );
+	t.equal( it.next.length, 0, 'has zero arity' );
+
+	actual = [];
+	for ( i = 0; i < expected.length; i++ ) {
+		actual.push( it.next() );
+	}
+	t.deepEqual( actual, expected, 'returns expected values' );
+	t.end();
+});
+
 tape( 'the function returns an iterator protocol-compliant object (value+done; callback)', function test( t ) {
 	var expected;
 	var values;