Added contains operator

pkg/yqlib/operator_with_test.go

@@ -11,6 +11,22 @@ var withOperatorScenarios = []expressionScenario{
 			"D0, P[], (doc)::a: {deeply: {nested: 'newValue'}}\n",
 		},
 	},
+	{
+		description: "Update multiple deeply nested properties",
+		document:    `a: {deeply: {nested: value, other: thing}}`,
+		expression:  `with(.a.deeply ; .nested = "newValue" | .other= "newThing")`,
+		expected: []string{
+			"D0, P[], (doc)::a: {deeply: {nested: newValue, other: newThing}}\n",
+		},
+	},
+	{
+		description: "Update array elements relatively",
+		document:    `myArray: [{a: apple},{a: banana}]`,
+		expression:  `with(.myArray[] ; .b = .a + " yum")`,
+		expected: []string{
+			"D0, P[], (doc)::myArray: [{a: apple, b: apple yum}, {a: banana, b: banana yum}]\n",
+		},
+	},
 }
 
 func TestWithOperatorScenarios(t *testing.T) {