urandom 0.2.2

Produce and consume randomness, to convert them to useful types and distributions, and some randomness-related algorithms.
Documentation 
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use super::*;

#[test]
fn chacha20_test_vectors() {
	#[track_caller]
	fn check(state: ChaChaCore, expected: [u32; 16]) {
		let mut result = RANDOM;
		chacha_block(&mut state.clone(), &mut result, 20);
		println!("state: {:?},\nresult: [\n\t{:x?},\n\t{:x?},\n\t{:x?},\n\t{:x?},\n]", state, result[0], result[1], result[2], result[3]);
		assert_eq!(expected, result[0]);
	}
	check(
		ChaChaCore::new([0x03020100, 0x07060504, 0x0b0a0908, 0x0f0e0d0c, 0x13121110, 0x17161514, 0x1b1a1918, 0x1f1e1d1c], 0x0900000000000001, 0x000000004a000000),
		[
			0xe4e7f110, 0x15593bd1, 0x1fdd0f50, 0xc47120a3,
			0xc7f4d1c7, 0x0368c033, 0x9aaa2204, 0x4e6cd4c3,
			0x466482d2, 0x09aa9f07, 0x05d7c214, 0xa2028bd9,
			0xd19c12b5, 0xb94e16de, 0xe883d0cb, 0x4e3c50a2,
		]
	);
	check(
		ChaChaCore::new([0, 0, 0, 0, 0, 0, 0, 0], 0, 0),
		[
			0xade0b876, 0x903df1a0, 0xe56a5d40, 0x28bd8653,
			0xb819d2bd, 0x1aed8da0, 0xccef36a8, 0xc70d778b,
			0x7c5941da, 0x8d485751, 0x3fe02477, 0x374ad8b8,
			0xf4b8436a, 0x1ca11815, 0x69b687c3, 0x8665eeb2,
		]
	);
	check(
		ChaChaCore::new([0, 0, 0, 0, 0, 0, 0, 0], 1, 0),
		[
			0xbee7079f, 0x7a385155, 0x7c97ba98, 0x0d082d73,
			0xa0290fcb, 0x6965e348, 0x3e53c612, 0xed7aee32,
			0x7621b729, 0x434ee69c, 0xb03371d5, 0xd539d874,
			0x281fed31, 0x45fb0a51, 0x1f0ae1ac, 0x6f4d794b,
		]
	);
	check(
		ChaChaCore::new([0, 0, 0, 0, 0, 0, 0, 0x01000000], 1, 0),
		[
			0x2452eb3a, 0x9249f8ec, 0x8d829d9b, 0xddd4ceb1,
			0xe8252083, 0x60818b01, 0xf38422b8, 0x5aaa49c9,
			0xbb00ca8e, 0xda3ba7b4, 0xc4b592d1, 0xfdf2732f,
			0x4436274e, 0x2561b3c8, 0xebdd4aa6, 0xa0136c00,
		]
	);
	check(
		ChaChaCore::new([0x0000ff00, 0, 0, 0, 0, 0, 0, 0], 2, 0),
		[
			0xfb4dd572, 0x4bc42ef1, 0xdf922636, 0x327f1394,
			0xa78dea8f, 0x5e269039, 0xa1bebbc1, 0xcaf09aae,
			0xa25ab213, 0x48a6b46c, 0x1b9d9bcb, 0x092c5be6,
			0x546ca624, 0x1bec45d5, 0x87f47473, 0x96f0992e,
		]
	);
	check(
		ChaChaCore::new([0, 0, 0, 0, 0, 0, 0, 0], 0, 0x0200000000000000),
		[
			0x374dc6c2, 0x3736d58c, 0xb904e24a, 0xcd3f93ef,
			0x88228b1a, 0x96a4dfb3, 0x5b76ab72, 0xc727ee54,
			0x0e0e978a, 0xf3145c95, 0x1b748ea8, 0xf786c297,
			0x99c28f5f, 0x628314e8, 0x398a19fa, 0x6ded1b53,
		]
	);
}

#[test]
fn test_randomness() {
	let mut rand = ChaCha20::new();
	let mut words1 = [0; 16 * CN];
	for i in 0..INDEX as usize {
		words1[i] = rand.next_u32();
	}
	let mut words2 = [0; 16 * CN];
	for i in 0..INDEX as usize {
		words2[i] = rand.next_u32();
	}
	assert_ne!(words1, words2);
}

#[test]
fn test_fill_bytes() {
	crate::rng::tests::check_fill_bytes(&mut ChaCha20::new());
}

#[cfg(feature = "serde")]
#[test]
fn serde() {
	crate::rng::tests::check_serde_initial_state(ChaCha12::new());
	crate::rng::tests::check_serde_middle_state(ChaCha12::new());
}