azurerm_sql_virtual_network_rule name validation

azurerm/internal/services/sql/resource_arm_sql_virtual_network_rule.go

@@ -217,16 +217,22 @@ func ValidateSqlVirtualNetworkRuleName(v interface{}, k string) (warnings []stri
 			"%q cannot be an empty string: %q", k, value))
 	}
 
-	// Cannot be more than 128 characters
-	if len(value) > 128 {
+	// Cannot be shorter than 2 characters
+	if len(value) == 1 {
 		errors = append(errors, fmt.Errorf(
-			"%q cannot be longer than 128 characters: %q", k, value))
+			"%q cannot be shorter than 2 characters: %q", k, value))
 	}
 
-	// Must only contain alphanumeric characters or hyphens
-	if !regexp.MustCompile(`^[A-Za-z0-9-]*$`).MatchString(value) {
+	// Cannot be more than 64 characters
+	if len(value) > 64 {
 		errors = append(errors, fmt.Errorf(
-			"%q can only contain alphanumeric characters and hyphens: %q",
+			"%q cannot be longer than 64 characters: %q", k, value))
+	}
+
+	// Must only contain alphanumeric characters, underscores, periods or hyphens
+	if !regexp.MustCompile(`^[A-Za-z0-9-\._]*$`).MatchString(value) {
+		errors = append(errors, fmt.Errorf(
+			"%q can only contain alphanumeric characters, underscores, periods and hyphens: %q",
 			k, value))
 	}
 
@@ -236,10 +242,16 @@ func ValidateSqlVirtualNetworkRuleName(v interface{}, k string) (warnings []stri
 			"%q cannot end with a hyphen: %q", k, value))
 	}
 
-	// Cannot start with a number or hyphen
-	if regexp.MustCompile(`^[0-9-]`).MatchString(value) {
+	// Cannot end in a period
+	if regexp.MustCompile(`\.$`).MatchString(value) {
+		errors = append(errors, fmt.Errorf(
+			"%q cannot end with a period: %q", k, value))
+	}
+
+	// Cannot start with a period, underscore or hyphen
+	if regexp.MustCompile(`^[\._-]`).MatchString(value) {
 		errors = append(errors, fmt.Errorf(
-			"%q cannot start with a number or hyphen: %q", k, value))
+			"%q cannot start with a period, underscore or hyphen: %q", k, value))
 	}
 
 	// There are multiple returns in the case that there is more than one invalid

azurerm/internal/services/sql/tests/resource_arm_sql_virtual_network_rule_test.go

@@ -209,13 +209,13 @@ func TestResourceAzureRMSqlVirtualNetworkRule_invalidNameValidation(t *testing.T
 		Value    string
 		ErrCount int
 	}{
-		// Must only contain alphanumeric characters or hyphens (4 cases)
+		// Must only contain alphanumeric characters, periods, underscores or hyphens (4 cases)
 		{
 			Value:    "test!Rule",
 			ErrCount: 1,
 		},
 		{
-			Value:    "test_Rule",
+			Value:    "test&Rule",
 			ErrCount: 1,
 		},
 		{
@@ -226,24 +226,38 @@ func TestResourceAzureRMSqlVirtualNetworkRule_invalidNameValidation(t *testing.T
 			Value:    "test'Rule",
 			ErrCount: 1,
 		},
-		// Cannot be more than 128 characters (1 case - ensure starts with a letter)
+		// Cannot be more than 64 characters (1 case - ensure starts with a letter)
 		{
-			Value:    fmt.Sprintf("v%s", acctest.RandString(128)),
+			Value:    fmt.Sprintf("v%s", acctest.RandString(64)),
 			ErrCount: 1,
 		},
 		// Cannot be empty (1 case)
 		{
 			Value:    "",
 			ErrCount: 1,
 		},
+		// Cannot be single character (1 case)
+		{
+			Value:    "a",
+			ErrCount: 1,
+		},
 		// Cannot end in a hyphen (1 case)
 		{
 			Value:    "testRule-",
 			ErrCount: 1,
 		},
-		// Cannot start with a number or hyphen (2 cases)
+		// Cannot end in a period (1 case)
+		{
+			Value:    "testRule.",
+			ErrCount: 1,
+		},
+		// Cannot start with a period, underscore or hyphen (3 cases)
+		{
+			Value:    ".testRule",
+			ErrCount: 1,
+		},
 		{
-			Value:    "7testRule",
+			Value:    "_testRule",
 			ErrCount: 1,
 		},
 		{
@@ -295,24 +309,54 @@ func TestResourceAzureRMSqlVirtualNetworkRule_validNameValidation(t *testing.T)
 			Value:    "this----1s----a----ru1e",
 			ErrCount: 0,
 		},
-		// Test numbers (except for first character)
+		// Test underscores
 		{
-			Value:    "v1108501298509850810258091285091820-5",
+			Value:    "this_is_a_rule",
+			ErrCount: 0,
+		},
+		// Test ending with underscore
+		{
+			Value:    "this_is_a_rule_",
+			ErrCount: 0,
+		},
+		// Test multiple underscoress in a row
+		{
+			Value:    "this____1s____a____ru1e",
+			ErrCount: 0,
+		},
+		// Test periods
+		{
+			Value:    "this.is.a.rule",
+			ErrCount: 0,
+		},
+		// Test multiple periods in a row
+		{
+			Value:    "this....1s....a....ru1e",
+			ErrCount: 0,
+		},
+		// Test numbers
+		{
+			Value:    "1108501298509850810258091285091820-5",
 			ErrCount: 0,
 		},
 		// Test a lot of hyphens and numbers
 		{
 			Value:    "x-5-4-1-2-5-2-6-1-5-2-5-1-2-5-6-2-2",
 			ErrCount: 0,
 		},
-		// Test exactly 128 characters
+		// Test a lot of underscores and numbers
+		{
+			Value:    "x_5_4_1_2_5_2_6_1_5_2_5_1_2_5_6_2_2",
+			ErrCount: 0,
+		},
+		// Test a lot of periods and numbers
 		{
-			Value:    fmt.Sprintf("v%s", acctest.RandString(127)),
+			Value:    "x.5.4.1.2.5.2.6.1.5.2.5.1.2.5.6.2.2",
 			ErrCount: 0,
 		},
-		// Test short, 1-letter name
+		// Test exactly 64 characters
 		{
-			Value:    "V",
+			Value:    fmt.Sprintf("v%s", acctest.RandString(63)),
 			ErrCount: 0,
 		},
 	}