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// Copyright 2025 Oxibase Contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//! DDL Function Tests
//!
//! Tests for CREATE/DROP FUNCTION DDL execution edge cases and error handling.
use oxibase::Database;
#[cfg(test)]
mod ddl_function_tests {
use super::*;
#[test]
fn test_create_function_invalid_language() {
let db = Database::open("memory://invalid_lang_test").unwrap();
// Try to create function with unsupported language
let result = db.execute(
r#"
CREATE FUNCTION test_func() RETURNS INTEGER
LANGUAGE INVALID_LANG AS 'return 42'
"#,
(),
);
// May succeed at creation and fail at execution
if result.is_ok() {
let exec_result: Result<i64, _> = db.query_one("SELECT test_func()", ());
assert!(
exec_result.is_err(),
"Should fail when executing with unsupported language"
);
} else {
// If creation fails, that's also acceptable
assert!(result.is_err());
}
}
#[test]
fn test_create_function_duplicate_without_if_not_exists() {
let db = Database::open("memory://duplicate_func_test").unwrap();
// Create function
db.execute(
r#"
CREATE FUNCTION test_func() RETURNS INTEGER
LANGUAGE RHAI AS '42'
"#,
(),
)
.unwrap();
// Try to create again without IF NOT EXISTS - should fail
let result = db.execute(
r#"
CREATE FUNCTION test_func() RETURNS INTEGER
LANGUAGE RHAI AS '43'
"#,
(),
);
assert!(result.is_err());
}
#[test]
fn test_create_function_duplicate_with_if_not_exists() {
let db = Database::open("memory://duplicate_if_not_exists_test").unwrap();
// Create function
db.execute(
r#"
CREATE FUNCTION test_func() RETURNS INTEGER
LANGUAGE RHAI AS '42'
"#,
(),
)
.unwrap();
// Try to create again with IF NOT EXISTS - should succeed
let result = db.execute(
r#"
CREATE FUNCTION IF NOT EXISTS test_func() RETURNS INTEGER
LANGUAGE RHAI AS '43'
"#,
(),
);
assert!(result.is_ok());
// Function should still return original value (not replaced)
let value: i64 = db.query_one("SELECT test_func()", ()).unwrap();
assert_eq!(value, 42);
}
#[test]
fn test_create_function_invalid_syntax_validation() {
let db = Database::open("memory://syntax_validation_test").unwrap();
// Try to create function with invalid syntax in body
let result = db.execute(
r#"
CREATE FUNCTION invalid_func() RETURNS INTEGER
LANGUAGE RHAI AS '1 +'
"#,
(),
);
// May succeed at creation and fail at execution
if result.is_ok() {
let exec_result: Result<i64, _> = db.query_one("SELECT invalid_func()", ());
assert!(
exec_result.is_err(),
"Should fail when executing invalid syntax"
);
} else {
// If creation fails, that's also acceptable
assert!(result.is_err());
}
}
#[test]
fn test_create_function_empty_body() {
let db = Database::open("memory://empty_body_test").unwrap();
// Try to create function with empty body
let result = db.execute(
r#"
CREATE FUNCTION empty_func() RETURNS INTEGER
LANGUAGE RHAI AS ''
"#,
(),
);
// This might succeed or fail depending on backend validation
// At minimum, it should not crash
if result.is_ok() {
// If it succeeds, executing should handle empty script gracefully
let exec_result: Result<i64, _> = db.query_one("SELECT empty_func()", ());
// Should either return NULL or error gracefully
assert!(exec_result.is_ok() || exec_result.is_err());
}
}
// Note: Schema-qualified functions may not be fully implemented yet
// #[test]
// fn test_create_function_schema_not_exists() {
// let db = Database::open("memory://schema_not_exists_test").unwrap();
// // Implementation depends on schema support
// }
#[test]
fn test_drop_function_not_exists() {
let db = Database::open("memory://drop_not_exists_test").unwrap();
// Try to drop non-existent function
let result = db.execute("DROP FUNCTION nonexistent_func", ());
assert!(result.is_err());
let err_msg = result.unwrap_err().to_string();
assert!(err_msg.contains("not found") || err_msg.contains("does not exist"));
}
#[test]
fn test_drop_function_if_exists() {
let db = Database::open("memory://drop_if_exists_test").unwrap();
// Drop non-existent function with IF EXISTS - should succeed
let result = db.execute("DROP FUNCTION IF EXISTS nonexistent_func", ());
assert!(result.is_ok());
}
#[test]
fn test_create_function_case_insensitive_language() {
let db = Database::open("memory://case_insensitive_lang_test").unwrap();
// Test case insensitive language names
let result = db.execute(
r#"
CREATE FUNCTION test_func() RETURNS INTEGER
LANGUAGE rhai AS '42'
"#,
(),
);
assert!(result.is_ok());
}
#[test]
fn test_create_function_malformed_signature() {
let db = Database::open("memory://malformed_sig_test").unwrap();
// Missing closing parenthesis
let result = db.execute(
r#"
CREATE FUNCTION test_func(a INTEGER RETURNS INTEGER
LANGUAGE RHAI AS '42'
"#,
(),
);
assert!(result.is_err());
}
}