tegdb 0.5.0

The name TegridyDB (short for TegDB) is inspired by the Tegridy Farm in South Park and tries to correct some of the wrong database implementations, such as null support, implicit conversion support, etc.
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mod test_helpers {
    include!("../common/test_helpers.rs");
}
use test_helpers::run_with_both_backends;

use tegdb::{Database, Result, SqlValue};

#[test]
fn test_multiple_where_conditions_and() -> Result<()> {
    run_with_both_backends("test_multiple_where_conditions_and", |db_path| {
        let mut db = Database::open(db_path)?;

        db.execute("CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT(32), price REAL, category TEXT(32))")?;
        db.execute("INSERT INTO products (id, name, price, category) VALUES (1, 'Laptop', 999.99, 'Electronics'), (2, 'Mouse', 29.99, 'Electronics'), (3, 'Desk', 199.99, 'Furniture')")?;

        // Multiple AND conditions
        let result =
            db.query("SELECT name FROM products WHERE category = 'Electronics' AND price > 50.0")?;
        assert_eq!(result.len(), 1);
        assert_eq!(result.rows()[0][0], SqlValue::Text("Laptop".to_string()));

        // Three AND conditions
        let result = db.query(
            "SELECT name FROM products WHERE category = 'Electronics' AND price > 50.0 AND id < 10",
        )?;
        assert_eq!(result.len(), 1);

        Ok(())
    })
}

#[test]
fn test_multiple_where_conditions_or() -> Result<()> {
    run_with_both_backends("test_multiple_where_conditions_or", |db_path| {
        let mut db = Database::open(db_path)?;

        db.execute("CREATE TABLE items (id INTEGER PRIMARY KEY, status TEXT(32), value INTEGER)")?;
        db.execute("INSERT INTO items (id, status, value) VALUES (1, 'active', 100), (2, 'inactive', 200), (3, 'pending', 150)")?;

        // OR conditions
        let result =
            db.query("SELECT id FROM items WHERE status = 'active' OR status = 'pending'")?;
        assert_eq!(result.len(), 2);

        // Multiple OR conditions
        let result =
            db.query("SELECT id FROM items WHERE value = 100 OR value = 200 OR value = 300")?;
        assert_eq!(result.len(), 2);

        Ok(())
    })
}

#[test]
fn test_nested_where_conditions() -> Result<()> {
    run_with_both_backends("test_nested_where_conditions", |db_path| {
        let mut db = Database::open(db_path)?;

        db.execute("CREATE TABLE employees (id INTEGER PRIMARY KEY, department TEXT(32), salary REAL, age INTEGER)")?;
        db.execute("INSERT INTO employees (id, department, salary, age) VALUES (1, 'Engineering', 100000, 30), (2, 'Sales', 80000, 25), (3, 'Engineering', 120000, 35)")?;

        // Nested parentheses with AND and OR
        let result = db.query("SELECT id FROM employees WHERE (department = 'Engineering' AND salary > 90000) OR (department = 'Sales' AND age < 30)")?;
        assert_eq!(result.len(), 3); // All three match

        // Complex nested condition
        let result = db.query("SELECT id FROM employees WHERE ((department = 'Engineering') AND (salary > 110000 OR age > 32))")?;
        assert_eq!(result.len(), 1);
        assert_eq!(result.rows()[0][0], SqlValue::Integer(3));

        Ok(())
    })
}

#[test]
fn test_order_by_multiple_columns() -> Result<()> {
    run_with_both_backends("test_order_by_multiple_columns", |db_path| {
        let mut db = Database::open(db_path)?;

        db.execute("CREATE TABLE students (id INTEGER PRIMARY KEY, name TEXT(32), grade INTEGER, score REAL)")?;
        db.execute("INSERT INTO students (id, name, grade, score) VALUES (1, 'Alice', 10, 95.5), (2, 'Bob', 10, 88.0), (3, 'Charlie', 9, 92.0), (4, 'David', 10, 88.0)")?;

        // Order by multiple columns - grade first, then score
        let result =
            db.query("SELECT name, grade, score FROM students ORDER BY grade, score DESC")?;
        let rows = result.rows();
        assert_eq!(rows.len(), 4);

        // Verify ordering: grade 9 first, then grade 10 sorted by score descending
        assert_eq!(rows[0][1], SqlValue::Integer(9)); // Charlie
        assert_eq!(rows[1][1], SqlValue::Integer(10)); // Alice (higher score)
        assert_eq!(rows[2][1], SqlValue::Integer(10)); // Bob or David
        assert_eq!(rows[3][1], SqlValue::Integer(10)); // Bob or David

        Ok(())
    })
}

#[test]
fn test_order_by_ascending_descending() -> Result<()> {
    run_with_both_backends("test_order_by_ascending_descending", |db_path| {
        let mut db = Database::open(db_path)?;

        db.execute("CREATE TABLE numbers (id INTEGER PRIMARY KEY, value INTEGER)")?;
        db.execute("INSERT INTO numbers (id, value) VALUES (1, 30), (2, 10), (3, 20)")?;

        // Ascending order
        let result = db.query("SELECT value FROM numbers ORDER BY value ASC")?;
        let rows = result.rows();
        assert_eq!(rows[0][0], SqlValue::Integer(10));
        assert_eq!(rows[1][0], SqlValue::Integer(20));
        assert_eq!(rows[2][0], SqlValue::Integer(30));

        // Descending order
        let result = db.query("SELECT value FROM numbers ORDER BY value DESC")?;
        let rows = result.rows();
        assert_eq!(rows[0][0], SqlValue::Integer(30));
        assert_eq!(rows[1][0], SqlValue::Integer(20));
        assert_eq!(rows[2][0], SqlValue::Integer(10));

        Ok(())
    })
}

#[test]
fn test_order_by_different_data_types() -> Result<()> {
    run_with_both_backends("test_order_by_different_data_types", |db_path| {
        let mut db = Database::open(db_path)?;

        db.execute("CREATE TABLE mixed (id INTEGER PRIMARY KEY, int_val INTEGER, real_val REAL, text_val TEXT(32))")?;
        db.execute("INSERT INTO mixed (id, int_val, real_val, text_val) VALUES (1, 30, 3.5, 'zebra'), (2, 10, 1.2, 'apple'), (3, 20, 2.8, 'banana')")?;

        // Order by INTEGER
        let result = db.query("SELECT int_val FROM mixed ORDER BY int_val")?;
        let rows = result.rows();
        assert_eq!(rows[0][0], SqlValue::Integer(10));
        assert_eq!(rows[1][0], SqlValue::Integer(20));
        assert_eq!(rows[2][0], SqlValue::Integer(30));

        // Order by REAL
        let result = db.query("SELECT real_val FROM mixed ORDER BY real_val")?;
        let rows = result.rows();
        if let (SqlValue::Real(v1), SqlValue::Real(v2), SqlValue::Real(v3)) =
            (&rows[0][0], &rows[1][0], &rows[2][0])
        {
            assert!(v1 < v2 && v2 < v3);
        }

        // Order by TEXT
        let result = db.query("SELECT text_val FROM mixed ORDER BY text_val")?;
        let rows = result.rows();
        assert_eq!(rows[0][0], SqlValue::Text("apple".to_string()));
        assert_eq!(rows[1][0], SqlValue::Text("banana".to_string()));
        assert_eq!(rows[2][0], SqlValue::Text("zebra".to_string()));

        Ok(())
    })
}

#[test]
fn test_where_with_arithmetic_expressions() -> Result<()> {
    run_with_both_backends("test_where_with_arithmetic_expressions", |db_path| {
        let mut db = Database::open(db_path)?;

        db.execute("CREATE TABLE calculations (id INTEGER PRIMARY KEY, a INTEGER, b INTEGER)")?;
        db.execute(
            "INSERT INTO calculations (id, a, b) VALUES (1, 10, 5), (2, 20, 10), (3, 15, 3)",
        )?;

        // WHERE with addition
        let result = db.query("SELECT id FROM calculations WHERE a + b > 20")?;
        assert_eq!(result.len(), 2);

        // WHERE with subtraction
        let result = db.query("SELECT id FROM calculations WHERE a - b < 10")?;
        assert_eq!(result.len(), 1);

        // WHERE with multiplication
        let result = db.query("SELECT id FROM calculations WHERE a * b = 200")?;
        assert_eq!(result.len(), 1);
        assert_eq!(result.rows()[0][0], SqlValue::Integer(2));

        // WHERE with division
        let result = db.query("SELECT id FROM calculations WHERE a / b = 5")?;
        assert_eq!(result.len(), 1);

        Ok(())
    })
}

#[test]
fn test_where_with_function_calls() -> Result<()> {
    run_with_both_backends("test_where_with_function_calls", |db_path| {
        let mut db = Database::open(db_path)?;

        // Register extension for function testing
        db.execute("CREATE EXTENSION tegdb_string")?;

        db.execute("CREATE TABLE users (id INTEGER PRIMARY KEY, name TEXT(32), email TEXT(50))")?;
        db.execute("INSERT INTO users (id, name, email) VALUES (1, 'alice', 'ALICE@EXAMPLE.COM'), (2, 'Bob', 'bob@example.com')")?;

        // WHERE with UPPER function
        let result = db.query("SELECT id FROM users WHERE UPPER(name) = 'ALICE'")?;
        assert_eq!(result.len(), 1);
        assert_eq!(result.rows()[0][0], SqlValue::Integer(1));

        // WHERE with LENGTH function
        let result = db.query("SELECT id FROM users WHERE LENGTH(name) > 3")?;
        assert_eq!(result.len(), 1);
        assert_eq!(result.rows()[0][0], SqlValue::Integer(1));

        Ok(())
    })
}

#[test]
fn test_select_with_computed_columns() -> Result<()> {
    run_with_both_backends("test_select_with_computed_columns", |db_path| {
        let mut db = Database::open(db_path)?;

        db.execute("CREATE TABLE sales (id INTEGER PRIMARY KEY, quantity INTEGER, price REAL)")?;
        db.execute("INSERT INTO sales (id, quantity, price) VALUES (1, 5, 10.0), (2, 3, 15.0)")?;

        // Computed column with multiplication
        let result = db.query("SELECT id, quantity * price AS total FROM sales")?;
        assert_eq!(result.len(), 2);
        assert_eq!(result.rows()[0][1], SqlValue::Real(50.0));
        assert_eq!(result.rows()[1][1], SqlValue::Real(45.0));

        // Computed column with addition
        let result = db.query("SELECT id, quantity + 10 AS adjusted_quantity FROM sales")?;
        assert_eq!(result.len(), 2);
        assert_eq!(result.rows()[0][1], SqlValue::Integer(15));
        assert_eq!(result.rows()[1][1], SqlValue::Integer(13));

        Ok(())
    })
}

#[test]
fn test_complex_query_combinations() -> Result<()> {
    run_with_both_backends("test_complex_query_combinations", |db_path| {
        let mut db = Database::open(db_path)?;

        db.execute("CREATE TABLE orders (id INTEGER PRIMARY KEY, customer_id INTEGER, amount REAL, status TEXT(32))")?;
        db.execute("INSERT INTO orders (id, customer_id, amount, status) VALUES (1, 1, 100.0, 'completed'), (2, 1, 200.0, 'pending'), (3, 2, 150.0, 'completed'), (4, 2, 50.0, 'cancelled')")?;

        // Complex query: WHERE with AND/OR, ORDER BY, LIMIT
        let result = db.query("SELECT id, amount FROM orders WHERE (status = 'completed' OR status = 'pending') AND amount > 100.0 ORDER BY amount DESC LIMIT 2")?;
        assert_eq!(result.len(), 2);

        // Verify ordering
        let rows = result.rows();
        if let (SqlValue::Real(a1), SqlValue::Real(a2)) = (&rows[0][1], &rows[1][1]) {
            assert!(a1 >= a2);
        }

        Ok(())
    })
}

#[test]
fn test_multiple_table_operations_in_sequence() -> Result<()> {
    run_with_both_backends("test_multiple_table_operations_in_sequence", |db_path| {
        let mut db = Database::open(db_path)?;

        // Create multiple tables
        db.execute("CREATE TABLE table1 (id INTEGER PRIMARY KEY, value INTEGER)")?;
        db.execute("CREATE TABLE table2 (id INTEGER PRIMARY KEY, value INTEGER)")?;
        db.execute("CREATE TABLE table3 (id INTEGER PRIMARY KEY, value INTEGER)")?;

        // Insert into each table
        for i in 1..=5 {
            db.execute(&format!(
                "INSERT INTO table1 (id, value) VALUES ({}, {})",
                i,
                i * 10
            ))?;
            db.execute(&format!(
                "INSERT INTO table2 (id, value) VALUES ({}, {})",
                i,
                i * 20
            ))?;
            db.execute(&format!(
                "INSERT INTO table3 (id, value) VALUES ({}, {})",
                i,
                i * 30
            ))?;
        }

        // Query each table
        let result1 = db.query("SELECT COUNT(*) FROM table1")?;
        assert_eq!(result1.rows()[0][0], SqlValue::Integer(5));

        let result2 = db.query("SELECT SUM(value) FROM table2")?;
        assert_eq!(result2.rows()[0][0], SqlValue::Real(300.0)); // Sum of 20, 40, 60, 80, 100

        let result3 = db.query("SELECT AVG(value) FROM table3")?;
        assert_eq!(result3.rows()[0][0], SqlValue::Real(90.0)); // Average of 30, 60, 90, 120, 150

        // Update operations
        db.execute("UPDATE table1 SET value = 999 WHERE id = 1")?;
        let result = db.query("SELECT value FROM table1 WHERE id = 1")?;
        assert_eq!(result.rows()[0][0], SqlValue::Integer(999));

        // Delete operations
        db.execute("DELETE FROM table2 WHERE id > 3")?;
        let result = db.query("SELECT COUNT(*) FROM table2")?;
        assert_eq!(result.rows()[0][0], SqlValue::Integer(3));

        Ok(())
    })
}