Added property tests for Oct32 encoding/decoding.
Tests random vectors, and makes sure that encoding/decoding round trip only introduces precision errors below a certain threshold. Pretty confident that the implementation is correct now.
This commit is contained in:
parent
8e15dba29d
commit
a6cae26c34
268
Cargo.lock
generated
268
Cargo.lock
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@ -18,10 +18,23 @@ name = "base64"
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@ -55,6 +73,14 @@ dependencies = [
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@ -68,6 +94,25 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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[[package]]
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|
||||
"checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
|
||||
"checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
|
||||
"checksum half 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1aad9c31c71e74a1476316df059e235b67a3b625dd9e404bf94b1c19789f880b"
|
||||
"checksum lazy_static 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c8f31047daa365f19be14b47c29df4f7c3b581832407daabe6ae77397619237d"
|
||||
"checksum libc 0.2.38 (registry+https://github.com/rust-lang/crates.io-index)" = "84a7beecb6b131a81c7d6c7b90cdaa1155b8531b4808bd3bc23bf4b3c33f4d9e"
|
||||
"checksum nom 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf51a729ecf40266a2368ad335a5fdde43471f545a967109cd62146ecf8b66ff"
|
||||
"checksum num-traits 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "0b3a5d7cc97d6d30d8b9bc8fa19bf45349ffe46241e8816f50f62f6d6aaabee1"
|
||||
"checksum num_cpus 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c51a3322e4bca9d212ad9a158a02abc6934d005490c054a2778df73a70aa0a30"
|
||||
"checksum openexr 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f9e3b9ae4f3eec70bc20117e11b24dd3acd629707a0a96d07f78b02910f0f480"
|
||||
"checksum openexr-sys 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "96a68b449953411a919eea06547a3b4a1ee6195b41ada68d432826caeedb75bd"
|
||||
"checksum pkg-config 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "3a8b4c6b8165cd1a1cd4b9b120978131389f64bdaf456435caa41e630edba903"
|
||||
"checksum png_encode_mini 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "116ae962ea1a679f99915c2c53dc470b45aaf6b42e607580d16fce8c6248f666"
|
||||
"checksum proptest 0.8.7 (registry+https://github.com/rust-lang/crates.io-index)" = "926d0604475349f463fe44130aae73f2294b5309ab2ca0310b998bd334ef191f"
|
||||
"checksum quick-error 1.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9274b940887ce9addde99c4eee6b5c44cc494b182b97e73dc8ffdcb3397fd3f0"
|
||||
"checksum rand 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e464cd887e869cddcae8792a4ee31d23c7edd516700695608f5b98c67ee0131c"
|
||||
"checksum rand 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ae9d223d52ae411a33cf7e54ec6034ec165df296ccd23533d671a28252b6f66a"
|
||||
"checksum rand_chacha 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "771b009e3a508cb67e8823dda454aaa5368c7bc1c16829fb77d3e980440dd34a"
|
||||
"checksum rand_core 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1961a422c4d189dfb50ffa9320bf1f2a9bd54ecb92792fb9477f99a1045f3372"
|
||||
"checksum rand_core 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0905b6b7079ec73b314d4c748701f6931eb79fd97c668caa3f1899b22b32c6db"
|
||||
"checksum rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7b40677c7be09ae76218dc623efbf7b18e34bced3f38883af07bb75630a21bc4"
|
||||
"checksum rand_isaac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "ded997c9d5f13925be2a6fd7e66bf1872597f759fd9dd93513dd7e92e5a5ee08"
|
||||
"checksum rand_pcg 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "086bd09a33c7044e56bb44d5bdde5a60e7f119a9e95b0775f545de759a32fe05"
|
||||
"checksum rand_xorshift 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "effa3fcaa47e18db002bdde6060944b6d2f9cfd8db471c30e873448ad9187be3"
|
||||
"checksum redox_syscall 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)" = "0d92eecebad22b767915e4d529f89f28ee96dbbf5a4810d2b844373f136417fd"
|
||||
"checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
|
||||
"checksum regex-syntax 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)" = "fbc557aac2b708fe84121caf261346cc2eed71978024337e42eb46b8a252ac6e"
|
||||
"checksum remove_dir_all 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3488ba1b9a2084d38645c4c08276a1752dcbf2c7130d74f1569681ad5d2799c5"
|
||||
"checksum rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)" = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
|
||||
"checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
|
||||
"checksum rusty-fork 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9591f190d2852720b679c21f66ad929f9f1d7bb09d1193c26167586029d8489c"
|
||||
"checksum safemem 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e27a8b19b835f7aea908818e871f5cc3a5a186550c30773be987e155e8163d8f"
|
||||
"checksum scoped_threadpool 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "1d51f5df5af43ab3f1360b429fa5e0152ac5ce8c0bd6485cae490332e96846a8"
|
||||
"checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
|
||||
"checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
|
||||
"checksum strsim 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bb4f380125926a99e52bc279241539c018323fab05ad6368b56f93d9369ff550"
|
||||
"checksum tempfile 3.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "7e91405c14320e5c79b3d148e1c86f40749a36e490642202a31689cb1a3452b2"
|
||||
"checksum termion 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "689a3bdfaab439fd92bc87df5c4c78417d3cbe537487274e9b0b2dce76e92096"
|
||||
"checksum textwrap 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c0b59b6b4b44d867f1370ef1bd91bfb262bf07bf0ae65c202ea2fbc16153b693"
|
||||
"checksum time 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)" = "a15375f1df02096fb3317256ce2cee6a1f42fc84ea5ad5fc8c421cfe40c73098"
|
||||
"checksum ucd-util 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "535c204ee4d8434478593480b8f86ab45ec9aae0e83c568ca81abf0fd0e88f86"
|
||||
"checksum unicode-width 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "bf3a113775714a22dcb774d8ea3655c53a32debae63a063acc00a91cc586245f"
|
||||
"checksum vec_map 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "887b5b631c2ad01628bbbaa7dd4c869f80d3186688f8d0b6f58774fbe324988c"
|
||||
"checksum wait-timeout 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "b9f3bf741a801531993db6478b95682117471f76916f5e690dd8d45395b09349"
|
||||
"checksum winapi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "04e3bd221fcbe8a271359c04f21a76db7d0c6028862d1bb5512d85e1e2eb5bb3"
|
||||
"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||
"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
|
|
|
|||
|
|
@ -7,3 +7,6 @@ license = "MIT"
|
|||
[lib]
|
||||
name = "oct32norm"
|
||||
path = "src/lib.rs"
|
||||
|
||||
[dev-dependencies]
|
||||
proptest = "0.8"
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
# Seeds for failure cases proptest has generated in the past. It is
|
||||
# automatically read and these particular cases re-run before any
|
||||
# novel cases are generated.
|
||||
#
|
||||
# It is recommended to check this file in to source control so that
|
||||
# everyone who runs the test benefits from these saved cases.
|
||||
xs 2999539226 326675911 3987401019 2999607733 # shrinks to v = (-0.41956997, 0.0, 0.0)
|
||||
xs 3917888384 62374025 2334923077 3025250995 # shrinks to v = (-0.14978456, 0.6395848, -0.5405228)
|
||||
xs 577284199 2546407762 2751612650 3421307724 # shrinks to v = (0.3486824, -0.9764652, 0.4179709)
|
||||
73
sub_crates/oct32norm/tests/proptest_tests.rs
Normal file
73
sub_crates/oct32norm/tests/proptest_tests.rs
Normal file
|
|
@ -0,0 +1,73 @@
|
|||
#[macro_use]
|
||||
extern crate proptest;
|
||||
extern crate oct32norm;
|
||||
|
||||
use oct32norm::{decode, encode};
|
||||
use proptest::test_runner::Config;
|
||||
|
||||
/// Calculates the cosine of the angle between the two vectors,
|
||||
/// and checks to see if it's greater than the passed cos.
|
||||
fn cos_gt(a: (f32, f32, f32), b: (f32, f32, f32), cos: f64) -> bool {
|
||||
fn normalize(v: (f32, f32, f32)) -> (f64, f64, f64) {
|
||||
let norm =
|
||||
((v.0 as f64 * v.0 as f64) + (v.1 as f64 * v.1 as f64) + (v.2 as f64 * v.2 as f64))
|
||||
.sqrt();
|
||||
(v.0 as f64 / norm, v.1 as f64 / norm, v.2 as f64 / norm)
|
||||
}
|
||||
let a = normalize(a);
|
||||
let b = normalize(b);
|
||||
let cos2 = (a.0 * b.0) + (a.1 * b.1) + (a.2 * b.2);
|
||||
let r = cos2 > cos as f64;
|
||||
|
||||
if !r {
|
||||
println!("cos: {}, left: {:?}, right: {:?}", cos2, a, b);
|
||||
}
|
||||
|
||||
r
|
||||
}
|
||||
|
||||
/// Checks if the difference between the two vectors on all axes is
|
||||
/// less than delta. Both vectors are L1-normalized first.
|
||||
fn l1_delta_lt(a: (f32, f32, f32), b: (f32, f32, f32), delta: f32) -> bool {
|
||||
fn l1_normalize(v: (f32, f32, f32)) -> (f32, f32, f32) {
|
||||
let l1_norm = v.0.abs() + v.1.abs() + v.2.abs();
|
||||
(v.0 / l1_norm, v.1 / l1_norm, v.2 / l1_norm)
|
||||
}
|
||||
|
||||
let a = l1_normalize(a);
|
||||
let b = l1_normalize(b);
|
||||
|
||||
let rx = (a.0 - b.0).abs() < delta;
|
||||
let ry = (a.1 - b.1).abs() < delta;
|
||||
let rz = (a.2 - b.2).abs() < delta;
|
||||
|
||||
let r = rx && ry && rz;
|
||||
|
||||
if !r {
|
||||
println!("left: {:?}, right: {:?}", a, b);
|
||||
}
|
||||
|
||||
r
|
||||
}
|
||||
|
||||
proptest! {
|
||||
#![proptest_config(Config::with_cases(4096))]
|
||||
|
||||
#[test]
|
||||
fn pt_roundtrip_angle_precision(v in (-1.0f32..1.0, -1.0f32..1.0, -1.0f32..1.0)) {
|
||||
let oct = encode(v);
|
||||
let v2 = decode(oct);
|
||||
|
||||
// Check if the angle between the original and the roundtrip
|
||||
// is less than 0.004 degrees
|
||||
assert!(cos_gt(v, v2, 0.9999999976));
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn pt_roundtrip_component_precision(v in (-1.0f32..1.0, -1.0f32..1.0, -1.0f32..1.0)) {
|
||||
let oct = encode(v);
|
||||
let v2 = decode(oct);
|
||||
|
||||
assert!(l1_delta_lt(v, v2, 0.00005));
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user