Add AND logical operator support (#1539)

Signed-off-by: Max Goncharenko <kacejot@fex.net>

pkg/engine/validate/pattern.go

@@ -154,17 +154,29 @@ func validateValueWithNilPattern(log logr.Logger, value interface{}) bool {
 
 // Handler for pattern values during validation process
 func validateValueWithStringPatterns(log logr.Logger, value interface{}, pattern string) bool {
-	statements := strings.Split(pattern, "|")
-	for _, statement := range statements {
-		statement = strings.Trim(statement, " ")
-		if validateValueWithStringPattern(log, value, statement) {
+	conditions := strings.Split(pattern, "|")
+	for _, condition := range conditions {
+		condition = strings.Trim(condition, " ")
+		if checkForAndConditionsAndValidate(log, value, condition) {
 			return true
 		}
 	}
 
 	return false
 }
 
+func checkForAndConditionsAndValidate(log logr.Logger, value interface{}, pattern string) bool {
+	conditions := strings.Split(pattern, "&")
+	for _, condition := range conditions {
+		condition = strings.Trim(condition, " ")
+		if !validateValueWithStringPattern(log, value, condition) {
+			return false
+		}
+	}
+
+	return true
+}
+
 // Handler for single pattern value during validation process
 // Detects if pattern has a number
 func validateValueWithStringPattern(log logr.Logger, value interface{}, pattern string) bool {

pkg/engine/validate/pattern_test.go

@@ -196,6 +196,22 @@ func TestValidateValueWithPattern_StringsLogicalOr(t *testing.T) {
 	assert.Assert(t, ValidateValueWithPattern(log.Log, value, pattern))
 }
 
+func TestValidateValueWithPattern_StringsLogicalAnd(t *testing.T) {
+	pattern := ">1 & <20"
+	value := "10"
+	assert.Assert(t, ValidateValueWithPattern(log.Log, value, pattern))
+}
+
+func TestValidateValueWithPattern_StringsAllLogicalOperators(t *testing.T) {
+	pattern := ">1 & <20 | >31 & <33"
+	value := "10"
+	assert.Assert(t, ValidateValueWithPattern(log.Log, value, pattern))
+	value = "32"
+	assert.Assert(t, ValidateValueWithPattern(log.Log, value, pattern))
+	value = "21"
+	assert.Assert(t, !ValidateValueWithPattern(log.Log, value, pattern))
+}
+
 func TestValidateValueWithPattern_EqualTwoFloats(t *testing.T) {
 	assert.Assert(t, ValidateValueWithPattern(log.Log, 7.0, 7.000))
 }