egglog-core-relations 2.0.0

egglog is a language that combines the benefits of equality saturation and datalog. It can be used for analysis, optimization, and synthesis of programs. It is the successor to the popular rust library egg.
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use super::{BaseValuePrinter, BaseValues};
use rand::{Rng, SeedableRng};

#[test]
fn base_printing() {
    let mut bases = BaseValues::default();
    bases.register_type::<i64>();
    let ty = bases.get_ty::<i64>();
    let val = bases.get(24i64);
    assert_eq!(
        format!(
            "{:?}",
            BaseValuePrinter {
                base: &bases,
                ty,
                val
            }
        ),
        "24"
    );
}

#[test]
fn roundtrip_small_integers() {
    let mut bases = BaseValues::default();
    let mut rng = rand::rngs::StdRng::seed_from_u64(42);

    // Test u8
    bases.register_type::<u8>();
    for val in [0u8, 1, 127, 255] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u8>(boxed);
        assert_eq!(val, unboxed);
    }
    // Random u8 samples
    for _ in 0..100 {
        let val: u8 = rng.random();
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u8>(boxed);
        assert_eq!(val, unboxed);
    }

    // Test u16
    bases.register_type::<u16>();
    for val in [0u16, 1, 255, 256, 65535] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u16>(boxed);
        assert_eq!(val, unboxed);
    }
    // Random u16 samples
    for _ in 0..100 {
        let val: u16 = rng.random();
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u16>(boxed);
        assert_eq!(val, unboxed);
    }

    // Test u32
    bases.register_type::<u32>();
    for val in [0u32, 1, 255, 65536, 2147483647, 4294967295] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u32>(boxed);
        assert_eq!(val, unboxed);
    }
    // Random u32 samples
    for _ in 0..100 {
        let val: u32 = rng.random();
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u32>(boxed);
        assert_eq!(val, unboxed);
    }

    // Test i8
    bases.register_type::<i8>();
    for val in [-128i8, -1, 0, 1, 127] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i8>(boxed);
        assert_eq!(val, unboxed);
    }
    // Random i8 samples
    for _ in 0..100 {
        let val: i8 = rng.random();
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i8>(boxed);
        assert_eq!(val, unboxed);
    }

    // Test i16
    bases.register_type::<i16>();
    for val in [-32768i16, -1, 0, 1, 32767] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i16>(boxed);
        assert_eq!(val, unboxed);
    }
    // Random i16 samples
    for _ in 0..100 {
        let val: i16 = rng.random();
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i16>(boxed);
        assert_eq!(val, unboxed);
    }

    // Test i32
    bases.register_type::<i32>();
    for val in [-2147483648i32, -1, 0, 1, 2147483647] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i32>(boxed);
        assert_eq!(val, unboxed);
    }
    // Random i32 samples
    for _ in 0..100 {
        let val: i32 = rng.random();
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i32>(boxed);
        assert_eq!(val, unboxed);
    }
}

#[test]
fn roundtrip_bool() {
    let mut bases = BaseValues::default();
    bases.register_type::<bool>();

    for val in [true, false] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<bool>(boxed);
        assert_eq!(val, unboxed);
    }

    // Random bool samples
    let mut rng = rand::rngs::StdRng::seed_from_u64(42);
    for _ in 0..100 {
        let val: bool = rng.random();
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<bool>(boxed);
        assert_eq!(val, unboxed);
    }
}

#[test]
fn roundtrip_unit() {
    let mut bases = BaseValues::default();
    bases.register_type::<()>();

    let val = ();
    let boxed = bases.get(val);
    bases.unwrap::<()>(boxed);
}

#[test]
fn roundtrip_medium_integers_unboxable() {
    let mut bases = BaseValues::default();
    let mut rng = rand::rngs::StdRng::seed_from_u64(42);

    // Test u64 values that fit in 31 bits (unboxable)
    bases.register_type::<u64>();
    for val in [0u64, 1, 1000, 2147483647] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u64>(boxed);
        assert_eq!(val, unboxed);
    }
    for _ in 0..100 {
        let val: u64 = rng.random_range(0..=2147483647);
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u64>(boxed);
        assert_eq!(val, unboxed);
    }

    bases.register_type::<i64>();
    for val in [0, 1, 1000, 2147483647] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i64>(boxed);
        assert_eq!(val, unboxed);
    }
    for _ in 0..100 {
        let val: i64 = rng.random_range(0..=2147483647);
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i64>(boxed);
        assert_eq!(val, unboxed);
    }

    bases.register_type::<usize>();
    for val in [0usize, 1, 1000, 2147483647] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<usize>(boxed);
        assert_eq!(val, unboxed);
    }
    for _ in 0..100 {
        let val: usize = rng.random_range(0..=2147483647);
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<usize>(boxed);
        assert_eq!(val, unboxed);
    }

    bases.register_type::<isize>();
    for val in [0, 1, 1000, 2147483647] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<isize>(boxed);
        assert_eq!(val, unboxed);
    }
    // Random isize samples (31-bit range)
    for _ in 0..100 {
        let val: isize = rng.random_range::<i32, _>(0..=2147483647) as isize;
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<isize>(boxed);
        assert_eq!(val, unboxed);
    }
}

#[test]
fn roundtrip_medium_integers_interned() {
    let mut bases = BaseValues::default();
    let mut rng = rand::rngs::StdRng::seed_from_u64(42);

    // Test u64 values that don't fit in 31 bits (need interning)
    bases.register_type::<u64>();
    for val in [2147483648u64, 4294967296, u64::MAX] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u64>(boxed);
        assert_eq!(val, unboxed);
    }
    // Random u64 samples (large values)
    for _ in 0..100 {
        let val: u64 = rng.random_range(2147483648..=u64::MAX);
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<u64>(boxed);
        assert_eq!(val, unboxed);
    }

    // Test i64 values that don't fit in 31 bits (need interning)
    bases.register_type::<i64>();
    for val in [-2147483649i64, i64::MIN, i64::MAX] {
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i64>(boxed);
        assert_eq!(val, unboxed);
    }
    // Random i64 samples (values outside 31-bit range)
    for _ in 0..50 {
        let val: i64 = rng.random_range(i64::MIN..0);
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i64>(boxed);
        assert_eq!(val, unboxed);
    }
    for _ in 0..50 {
        let val: i64 = rng.random_range(2147483648..=i64::MAX);
        let boxed = bases.get(val);
        let unboxed = bases.unwrap::<i64>(boxed);
        assert_eq!(val, unboxed);
    }

    // Test large usize values (need interning on 64-bit systems)
    bases.register_type::<usize>();
    if std::mem::size_of::<usize>() == 8 {
        for val in [2147483648usize, usize::MAX] {
            let boxed = bases.get(val);
            let unboxed = bases.unwrap::<usize>(boxed);
            assert_eq!(val, unboxed);
        }
        // Random usize samples (large values)
        for _ in 0..100 {
            let val: usize = rng.random_range(2147483648..=usize::MAX);
            let boxed = bases.get(val);
            let unboxed = bases.unwrap::<usize>(boxed);
            assert_eq!(val, unboxed);
        }
    }

    // Test large isize values (need interning on 64-bit systems)
    bases.register_type::<isize>();
    if std::mem::size_of::<isize>() == 8 {
        for val in [-2147483649isize, isize::MIN, isize::MAX] {
            let boxed = bases.get(val);
            let unboxed = bases.unwrap::<isize>(boxed);
            assert_eq!(val, unboxed);
        }
        // Random isize samples (values outside 31-bit range)
        for _ in 0..50 {
            let val: isize = rng.random_range(isize::MIN as i64..0) as isize;
            let boxed = bases.get(val);
            let unboxed = bases.unwrap::<isize>(boxed);
            assert_eq!(val, unboxed);
        }
        for _ in 0..50 {
            let val: isize = rng.random_range(2147483648..=isize::MAX as i64) as isize;
            let boxed = bases.get(val);
            let unboxed = bases.unwrap::<isize>(boxed);
            assert_eq!(val, unboxed);
        }
    }
}