Validates PostgreSQL table name (#19602)

internal/event/target/postgresql_test.go

@@ -36,3 +36,19 @@ func TestPostgreSQLRegistration(t *testing.T) {
 		t.Fatal("postgres driver not registered")
 	}
 }
+
+func TestPsqlTableNameValidation(t *testing.T) {
+	validTables := []string{"táblë", "table", "TableName", "\"Table name\"", "\"✅✅\"", "table$one", "\"táblë\""}
+	invalidTables := []string{"table name", "table \"name\"", "✅✅", "$table$"}
+
+	for _, name := range validTables {
+		if err := validatePsqlTableName(name); err != nil {
+			t.Errorf("Should be valid: %s - %s", name, err)
+		}
+	}
+	for _, name := range invalidTables {
+		if err := validatePsqlTableName(name); err != errInvalidPsqlTablename {
+			t.Errorf("Should be invalid: %s - %s", name, err)
+		}
+	}
+}