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// ============================================================================
// Tests for Dequantization Functions (PMAT-802: T-COV-95)
// ============================================================================
#[cfg(test)]
mod tests {
use super::*;
// -------------------------------------------------------------------------
// f16_to_f32 Tests
// -------------------------------------------------------------------------
#[test]
fn test_f16_to_f32_zero() {
assert!((f16_to_f32(0x0000) - 0.0).abs() < 0.0001);
}
#[test]
fn test_f16_to_f32_negative_zero() {
let result = f16_to_f32(0x8000);
assert!(result == 0.0 || result == -0.0);
}
#[test]
fn test_f16_to_f32_one() {
assert!((f16_to_f32(0x3C00) - 1.0).abs() < 0.0001);
}
#[test]
fn test_f16_to_f32_negative_one() {
assert!((f16_to_f32(0xBC00) - (-1.0)).abs() < 0.0001);
}
#[test]
fn test_f16_to_f32_infinity() {
assert!(f16_to_f32(0x7C00).is_infinite());
assert!(f16_to_f32(0x7C00) > 0.0);
}
#[test]
fn test_f16_to_f32_neg_infinity() {
assert!(f16_to_f32(0xFC00).is_infinite());
assert!(f16_to_f32(0xFC00) < 0.0);
}
#[test]
fn test_f16_to_f32_nan() {
assert!(f16_to_f32(0x7C01).is_nan());
}
#[test]
fn test_f16_to_f32_subnormal() {
let result = f16_to_f32(0x0001);
assert!(result > 0.0);
assert!(result < 0.001);
}
// -------------------------------------------------------------------------
// dequantize_q4_0 Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_q4_0_empty() {
let result = dequantize_q4_0(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_q4_0_invalid_length() {
let result = dequantize_q4_0(&[0; 17]); // Not multiple of 18
assert!(result.is_err());
}
#[test]
fn test_dequantize_q4_0_zeros() {
// One block: 2 (scale) + 16 (quants) = 18 bytes
let data = vec![0u8; 18];
let result = dequantize_q4_0(&data).expect("result");
assert_eq!(result.len(), 32);
// With scale=0, all values should be 0 (or close due to -8 offset)
}
#[test]
fn test_dequantize_q4_0_one_block() {
// scale = 1.0 (f16: 0x3C00)
let mut data = vec![0u8; 18];
data[0] = 0x00;
data[1] = 0x3C; // f16 for 1.0
let result = dequantize_q4_0(&data).expect("result");
assert_eq!(result.len(), 32);
}
// -------------------------------------------------------------------------
// dequantize_q8_0 Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_q8_0_empty() {
let result = dequantize_q8_0(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_q8_0_invalid_length() {
let result = dequantize_q8_0(&[0; 33]); // Not multiple of 34
assert!(result.is_err());
}
#[test]
fn test_dequantize_q8_0_zeros() {
// One block: 2 (scale) + 32 (quants) = 34 bytes
let data = vec![0u8; 34];
let result = dequantize_q8_0(&data).expect("result");
assert_eq!(result.len(), 32);
assert!(result.iter().all(|&x| x == 0.0));
}
#[test]
fn test_dequantize_q8_0_one_block() {
// scale = 1.0 (f16: 0x3C00)
let mut data = vec![0u8; 34];
data[0] = 0x00;
data[1] = 0x3C; // f16 for 1.0
// quants[0] = 1 (as i8)
data[2] = 1;
let result = dequantize_q8_0(&data).expect("result");
assert_eq!(result.len(), 32);
assert!((result[0] - 1.0).abs() < 0.01);
}
// -------------------------------------------------------------------------
// dequantize_f16 Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_f16_empty() {
let result = dequantize_f16(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_f16_invalid_length() {
let result = dequantize_f16(&[0]); // Not multiple of 2
assert!(result.is_err());
}
#[test]
fn test_dequantize_f16_zeros() {
let data = vec![0u8; 4]; // 2 values
let result = dequantize_f16(&data).expect("result");
assert_eq!(result.len(), 2);
assert!(result.iter().all(|&x| x == 0.0));
}
#[test]
fn test_dequantize_f16_one() {
// f16 for 1.0 = 0x3C00
let data = vec![0x00, 0x3C];
let result = dequantize_f16(&data).expect("result");
assert_eq!(result.len(), 1);
assert!((result[0] - 1.0).abs() < 0.0001);
}
// -------------------------------------------------------------------------
// dequantize_q4_1 Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_q4_1_empty() {
let result = dequantize_q4_1(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_q4_1_invalid_length() {
let result = dequantize_q4_1(&[0; 19]); // Not multiple of 20
assert!(result.is_err());
}
#[test]
fn test_dequantize_q4_1_zeros() {
let data = vec![0u8; 20];
let result = dequantize_q4_1(&data).expect("result");
assert_eq!(result.len(), 32);
}
// -------------------------------------------------------------------------
// dequantize_q5_0 Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_q5_0_empty() {
let result = dequantize_q5_0(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_q5_0_invalid_length() {
let result = dequantize_q5_0(&[0; 21]); // Not multiple of 22
assert!(result.is_err());
}
#[test]
fn test_dequantize_q5_0_zeros() {
let data = vec![0u8; 22];
let result = dequantize_q5_0(&data).expect("result");
assert_eq!(result.len(), 32);
}
// -------------------------------------------------------------------------
// dequantize_q5_1 Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_q5_1_empty() {
let result = dequantize_q5_1(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_q5_1_invalid_length() {
let result = dequantize_q5_1(&[0; 23]); // Not multiple of 24
assert!(result.is_err());
}
#[test]
fn test_dequantize_q5_1_zeros() {
let data = vec![0u8; 24];
let result = dequantize_q5_1(&data).expect("result");
assert_eq!(result.len(), 32);
}
// -------------------------------------------------------------------------
// dequantize_q4_k Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_q4_k_empty() {
let result = dequantize_q4_k(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_q4_k_invalid_length() {
let result = dequantize_q4_k(&[0; 100]); // Not multiple of 144
assert!(result.is_err());
}
#[test]
fn test_dequantize_q4_k_zeros() {
let data = vec![0u8; 144]; // One super-block
let result = dequantize_q4_k(&data).expect("result");
assert_eq!(result.len(), QK_K);
}
// -------------------------------------------------------------------------
// dequantize_q5_k Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_q5_k_empty() {
let result = dequantize_q5_k(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_q5_k_invalid_length() {
let result = dequantize_q5_k(&[0; 100]); // Not multiple of 176
assert!(result.is_err());
}
#[test]
fn test_dequantize_q5_k_zeros() {
let data = vec![0u8; 176]; // One super-block
let result = dequantize_q5_k(&data).expect("result");
assert_eq!(result.len(), QK_K);
}
// -------------------------------------------------------------------------
// dequantize_q6_k Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_q6_k_empty() {
let result = dequantize_q6_k(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_q6_k_invalid_length() {
let result = dequantize_q6_k(&[0; 100]); // Not multiple of 210
assert!(result.is_err());
}
#[test]
fn test_dequantize_q6_k_zeros() {
let data = vec![0u8; 210]; // One super-block
let result = dequantize_q6_k(&data).expect("result");
assert_eq!(result.len(), QK_K);
}
// -------------------------------------------------------------------------
// dequantize_q2_k Tests
// -------------------------------------------------------------------------
#[test]
fn test_dequantize_q2_k_empty() {
let result = dequantize_q2_k(&[]).expect("result");
assert!(result.is_empty());
}
#[test]
fn test_dequantize_q2_k_invalid_length() {
let result = dequantize_q2_k(&[0; 50]); // Not multiple of 84
assert!(result.is_err());
}
#[test]
fn test_dequantize_q2_k_zeros() {
let data = vec![0u8; 84]; // One super-block
let result = dequantize_q2_k(&data).expect("result");
assert_eq!(result.len(), QK_K);
}
// -------------------------------------------------------------------------
// read_f16 Tests
// -------------------------------------------------------------------------
#[test]
fn test_read_f16_zero() {
let result = read_f16(&[0x00, 0x00]);
assert!((result - 0.0).abs() < 0.0001);
}
#[test]
fn test_read_f16_one() {
let result = read_f16(&[0x00, 0x3C]); // f16 for 1.0
assert!((result - 1.0).abs() < 0.0001);
}
}