| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/ring-0.16.20/src/test.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>test.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../ring/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../ring/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="comment">// Copyright 2015-2016 Brian Smith. |
| // |
| // Permission to use, copy, modify, and/or distribute this software for any |
| // purpose with or without fee is hereby granted, provided that the above |
| // copyright notice and this permission notice appear in all copies. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES |
| // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY |
| // SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION |
| // OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN |
| // CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| |
| </span><span class="doccomment">//! Testing framework. |
| //! |
| //! Unlike the rest of *ring*, this testing framework uses panics pretty |
| //! liberally. It was originally designed for internal use--it drives most of |
| //! *ring*'s internal tests, and so it is optimized for getting *ring*'s tests |
| //! written quickly at the expense of some usability. The documentation is |
| //! lacking. The best way to learn it is to look at some examples. The digest |
| //! tests are the most complicated because they use named sections. Other tests |
| //! avoid named sections and so are easier to understand. |
| //! |
| //! # Examples |
| //! |
| //! ## Writing Tests |
| //! |
| //! Input files look like this: |
| //! |
| //! ```text |
| //! # This is a comment. |
| //! |
| //! HMAC = SHA1 |
| //! Input = "My test data" |
| //! Key = "" |
| //! Output = 61afdecb95429ef494d61fdee15990cabf0826fc |
| //! |
| //! HMAC = SHA256 |
| //! Input = "Sample message for keylen<blocklen" |
| //! Key = 000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F |
| //! Output = A28CF43130EE696A98F14A37678B56BCFCBDD9E5CF69717FECF5480F0EBDF790 |
| //! ``` |
| //! |
| //! Test cases are separated with blank lines. Note how the bytes of the `Key` |
| //! attribute are specified as a quoted string in the first test case and as |
| //! hex in the second test case; you can use whichever form is more convenient |
| //! and you can mix and match within the same file. The empty sequence of bytes |
| //! can only be represented with the quoted string form (`""`). |
| //! |
| //! Here's how you would consume the test data: |
| //! |
| //! ```ignore |
| //! use ring::test; |
| //! |
| //! test::run(test::test_file!("hmac_tests.txt"), |section, test_case| { |
| //! assert_eq!(section, ""); // This test doesn't use named sections. |
| //! |
| //! let digest_alg = test_case.consume_digest_alg("HMAC"); |
| //! let input = test_case.consume_bytes("Input"); |
| //! let key = test_case.consume_bytes("Key"); |
| //! let output = test_case.consume_bytes("Output"); |
| //! |
| //! // Do the actual testing here |
| //! }); |
| //! ``` |
| //! |
| //! Note that `consume_digest_alg` automatically maps the string "SHA1" to a |
| //! reference to `digest::SHA1_FOR_LEGACY_USE_ONLY`, "SHA256" to |
| //! `digest::SHA256`, etc. |
| //! |
| //! ## Output When a Test Fails |
| //! |
| //! When a test case fails, the framework automatically prints out the test |
| //! case. If the test case failed with a panic, then the backtrace of the panic |
| //! will be printed too. For example, let's say the failing test case looks |
| //! like this: |
| //! |
| //! ```text |
| //! Curve = P-256 |
| //! a = 2b11cb945c8cf152ffa4c9c2b1c965b019b35d0b7626919ef0ae6cb9d232f8af |
| //! b = 18905f76a53755c679fb732b7762251075ba95fc5fedb60179e730d418a9143c |
| //! r = 18905f76a53755c679fb732b7762251075ba95fc5fedb60179e730d418a9143c |
| //! ``` |
| //! If the test fails, this will be printed (if `$RUST_BACKTRACE` is `1`): |
| //! |
| //! ```text |
| //! src/example_tests.txt: Test panicked. |
| //! Curve = P-256 |
| //! a = 2b11cb945c8cf152ffa4c9c2b1c965b019b35d0b7626919ef0ae6cb9d232f8af |
| //! b = 18905f76a53755c679fb732b7762251075ba95fc5fedb60179e730d418a9143c |
| //! r = 18905f76a53755c679fb732b7762251075ba95fc5fedb60179e730d418a9143c |
| //! thread 'example_test' panicked at 'Test failed.', src\test.rs:206 |
| //! stack backtrace: |
| //! 0: 0x7ff654a05c7c - std::rt::lang_start::h61f4934e780b4dfc |
| //! 1: 0x7ff654a04f32 - std::rt::lang_start::h61f4934e780b4dfc |
| //! 2: 0x7ff6549f505d - std::panicking::rust_panic_with_hook::hfe203e3083c2b544 |
| //! 3: 0x7ff654a0825b - rust_begin_unwind |
| //! 4: 0x7ff6549f63af - std::panicking::begin_panic_fmt::h484cd47786497f03 |
| //! 5: 0x7ff654a07e9b - rust_begin_unwind |
| //! 6: 0x7ff654a0ae95 - core::panicking::panic_fmt::h257ceb0aa351d801 |
| //! 7: 0x7ff654a0b190 - core::panicking::panic::h4bb1497076d04ab9 |
| //! 8: 0x7ff65496dc41 - from_file<closure> |
| //! at C:\Users\Example\example\<core macros>:4 |
| //! 9: 0x7ff65496d49c - example_test |
| //! at C:\Users\Example\example\src\example.rs:652 |
| //! 10: 0x7ff6549d192a - test::stats::Summary::new::ha139494ed2e4e01f |
| //! 11: 0x7ff6549d51a2 - test::stats::Summary::new::ha139494ed2e4e01f |
| //! 12: 0x7ff654a0a911 - _rust_maybe_catch_panic |
| //! 13: 0x7ff6549d56dd - test::stats::Summary::new::ha139494ed2e4e01f |
| //! 14: 0x7ff654a03783 - std::sys::thread::Thread::new::h2b08da6cd2517f79 |
| //! 15: 0x7ff968518101 - BaseThreadInitThunk |
| //! ``` |
| //! |
| //! Notice that the output shows the name of the data file |
| //! (`src/example_tests.txt`), the test inputs that led to the failure, and the |
| //! stack trace to the line in the test code that panicked: entry 9 in the |
| //! stack trace pointing to line 652 of the file `example.rs`. |
| |
| </span><span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">use </span>alloc::{format, string::String, vec::Vec}; |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">use crate</span>::{bits, digest, error}; |
| |
| <span class="attribute">#[cfg(any(feature = <span class="string">"std"</span>, feature = <span class="string">"test_logging"</span>))] |
| </span><span class="kw">extern crate </span>std; |
| |
| <span class="doccomment">/// `compile_time_assert_clone::<T>();` fails to compile if `T` doesn't |
| /// implement `Clone`. |
| </span><span class="kw">pub fn </span>compile_time_assert_clone<T: Clone>() {} |
| |
| <span class="doccomment">/// `compile_time_assert_copy::<T>();` fails to compile if `T` doesn't |
| /// implement `Copy`. |
| </span><span class="kw">pub fn </span>compile_time_assert_copy<T: Copy>() {} |
| |
| <span class="doccomment">/// `compile_time_assert_send::<T>();` fails to compile if `T` doesn't |
| /// implement `Send`. |
| </span><span class="kw">pub fn </span>compile_time_assert_send<T: Send>() {} |
| |
| <span class="doccomment">/// `compile_time_assert_sync::<T>();` fails to compile if `T` doesn't |
| /// implement `Sync`. |
| </span><span class="kw">pub fn </span>compile_time_assert_sync<T: Sync>() {} |
| |
| <span class="doccomment">/// `compile_time_assert_std_error_error::<T>();` fails to compile if `T` |
| /// doesn't implement `std::error::Error`. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"std"</span>)] |
| </span><span class="kw">pub fn </span>compile_time_assert_std_error_error<T: std::error::Error>() {} |
| |
| <span class="doccomment">/// A test case. A test case consists of a set of named attributes. Every |
| /// attribute in the test case must be consumed exactly once; this helps catch |
| /// typos and omissions. |
| /// |
| /// Requires the `alloc` default feature to be enabled. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| #[derive(Debug)] |
| </span><span class="kw">pub struct </span>TestCase { |
| attributes: Vec<(String, String, bool)>, |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">impl </span>TestCase { |
| <span class="doccomment">/// Maps the string "true" to true and the string "false" to false. |
| </span><span class="kw">pub fn </span>consume_bool(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>str) -> bool { |
| <span class="kw">match </span><span class="self">self</span>.consume_string(key).as_ref() { |
| <span class="string">"true" </span>=> <span class="bool-val">true</span>, |
| <span class="string">"false" </span>=> <span class="bool-val">false</span>, |
| s => <span class="macro">panic!</span>(<span class="string">"Invalid bool value: {}"</span>, s), |
| } |
| } |
| |
| <span class="doccomment">/// Maps the strings "SHA1", "SHA256", "SHA384", and "SHA512" to digest |
| /// algorithms, maps "SHA224" to `None`, and panics on other (erroneous) |
| /// inputs. "SHA224" is mapped to None because *ring* intentionally does |
| /// not support SHA224, but we need to consume test vectors from NIST that |
| /// have SHA224 vectors in them. |
| </span><span class="kw">pub fn </span>consume_digest_alg(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span><span class="lifetime">'static </span>digest::Algorithm> { |
| <span class="kw">let </span>name = <span class="self">self</span>.consume_string(key); |
| <span class="kw">match </span>name.as_ref() { |
| <span class="string">"SHA1" </span>=> <span class="prelude-val">Some</span>(<span class="kw-2">&</span>digest::SHA1_FOR_LEGACY_USE_ONLY), |
| <span class="string">"SHA224" </span>=> <span class="prelude-val">None</span>, <span class="comment">// We actively skip SHA-224 support. |
| </span><span class="string">"SHA256" </span>=> <span class="prelude-val">Some</span>(<span class="kw-2">&</span>digest::SHA256), |
| <span class="string">"SHA384" </span>=> <span class="prelude-val">Some</span>(<span class="kw-2">&</span>digest::SHA384), |
| <span class="string">"SHA512" </span>=> <span class="prelude-val">Some</span>(<span class="kw-2">&</span>digest::SHA512), |
| <span class="string">"SHA512_256" </span>=> <span class="prelude-val">Some</span>(<span class="kw-2">&</span>digest::SHA512_256), |
| <span class="kw">_ </span>=> <span class="macro">panic!</span>(<span class="string">"Unsupported digest algorithm: {}"</span>, name), |
| } |
| } |
| |
| <span class="doccomment">/// Returns the value of an attribute that is encoded as a sequence of an |
| /// even number of hex digits, or as a double-quoted UTF-8 string. The |
| /// empty (zero-length) value is represented as "". |
| </span><span class="kw">pub fn </span>consume_bytes(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>str) -> Vec<u8> { |
| <span class="kw">let </span>s = <span class="self">self</span>.consume_string(key); |
| <span class="kw">if </span>s.starts_with(<span class="string">'\"'</span>) { |
| <span class="comment">// The value is a quoted UTF-8 string. |
| |
| </span><span class="kw">let </span><span class="kw-2">mut </span>bytes = Vec::with_capacity(s.as_bytes().len() - <span class="number">2</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>s = s.as_bytes().iter().skip(<span class="number">1</span>); |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>b = <span class="kw">match </span>s.next() { |
| <span class="prelude-val">Some</span>(<span class="string">b'\\'</span>) => { |
| <span class="kw">match </span>s.next() { |
| <span class="comment">// We don't allow all octal escape sequences, only "\0" for null. |
| </span><span class="prelude-val">Some</span>(<span class="string">b'0'</span>) => <span class="number">0u8</span>, |
| <span class="prelude-val">Some</span>(<span class="string">b't'</span>) => <span class="string">b'\t'</span>, |
| <span class="prelude-val">Some</span>(<span class="string">b'n'</span>) => <span class="string">b'\n'</span>, |
| <span class="comment">// "\xHH" |
| </span><span class="prelude-val">Some</span>(<span class="string">b'x'</span>) => { |
| <span class="kw">let </span>hi = s.next().expect(<span class="string">"Invalid hex escape sequence in string."</span>); |
| <span class="kw">let </span>lo = s.next().expect(<span class="string">"Invalid hex escape sequence in string."</span>); |
| <span class="kw">if let </span>(<span class="prelude-val">Ok</span>(hi), <span class="prelude-val">Ok</span>(lo)) = (from_hex_digit(<span class="kw-2">*</span>hi), from_hex_digit(<span class="kw-2">*</span>lo)) |
| { |
| (hi << <span class="number">4</span>) | lo |
| } <span class="kw">else </span>{ |
| <span class="macro">panic!</span>(<span class="string">"Invalid hex escape sequence in string."</span>); |
| } |
| } |
| <span class="kw">_ </span>=> { |
| <span class="macro">panic!</span>(<span class="string">"Invalid hex escape sequence in string."</span>); |
| } |
| } |
| } |
| <span class="prelude-val">Some</span>(<span class="string">b'"'</span>) => { |
| <span class="kw">if </span>s.next().is_some() { |
| <span class="macro">panic!</span>(<span class="string">"characters after the closing quote of a quoted string."</span>); |
| } |
| <span class="kw">break</span>; |
| } |
| <span class="prelude-val">Some</span>(b) => <span class="kw-2">*</span>b, |
| <span class="prelude-val">None </span>=> <span class="macro">panic!</span>(<span class="string">"Missing terminating '\"' in string literal."</span>), |
| }; |
| bytes.push(b); |
| } |
| bytes |
| } <span class="kw">else </span>{ |
| <span class="comment">// The value is hex encoded. |
| </span><span class="kw">match </span>from_hex(<span class="kw-2">&</span>s) { |
| <span class="prelude-val">Ok</span>(s) => s, |
| <span class="prelude-val">Err</span>(err_str) => { |
| <span class="macro">panic!</span>(<span class="string">"{} in {}"</span>, err_str, s); |
| } |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Returns the value of an attribute that is an integer, in decimal |
| /// notation. |
| </span><span class="kw">pub fn </span>consume_usize(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>str) -> usize { |
| <span class="kw">let </span>s = <span class="self">self</span>.consume_string(key); |
| s.parse::<usize>().unwrap() |
| } |
| |
| <span class="doccomment">/// Returns the value of an attribute that is an integer, in decimal |
| /// notation, as a bit length. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">pub fn </span>consume_usize_bits(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>str) -> bits::BitLength { |
| <span class="kw">let </span>s = <span class="self">self</span>.consume_string(key); |
| <span class="kw">let </span>bits = s.parse::<usize>().unwrap(); |
| bits::BitLength::from_usize_bits(bits) |
| } |
| |
| <span class="doccomment">/// Returns the raw value of an attribute, without any unquoting or |
| /// other interpretation. |
| </span><span class="kw">pub fn </span>consume_string(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>str) -> String { |
| <span class="self">self</span>.consume_optional_string(key) |
| .unwrap_or_else(|| <span class="macro">panic!</span>(<span class="string">"No attribute named \"{}\""</span>, key)) |
| } |
| |
| <span class="doccomment">/// Like `consume_string()` except it returns `None` if the test case |
| /// doesn't have the attribute. |
| </span><span class="kw">pub fn </span>consume_optional_string(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Option</span><String> { |
| <span class="kw">for </span>(name, value, consumed) <span class="kw">in </span><span class="kw-2">&mut </span><span class="self">self</span>.attributes { |
| <span class="kw">if </span>key == name { |
| <span class="kw">if </span><span class="kw-2">*</span>consumed { |
| <span class="macro">panic!</span>(<span class="string">"Attribute {} was already consumed"</span>, key); |
| } |
| <span class="kw-2">*</span>consumed = <span class="bool-val">true</span>; |
| <span class="kw">return </span><span class="prelude-val">Some</span>(value.clone()); |
| } |
| } |
| <span class="prelude-val">None |
| </span>} |
| } |
| |
| <span class="doccomment">/// References a test input file. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| #[macro_export] |
| </span><span class="macro">macro_rules! </span>test_file { |
| (<span class="macro-nonterminal">$file_name</span>:expr) => { |
| <span class="kw">crate</span>::test::File { |
| file_name: <span class="macro-nonterminal">$file_name</span>, |
| contents: <span class="macro">include_str!</span>(<span class="macro-nonterminal">$file_name</span>), |
| } |
| }; |
| } |
| |
| <span class="doccomment">/// A test input file. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">pub struct </span>File<<span class="lifetime">'a</span>> { |
| <span class="doccomment">/// The name (path) of the file. |
| </span><span class="kw">pub </span>file_name: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| |
| <span class="doccomment">/// The contents of the file. |
| </span><span class="kw">pub </span>contents: <span class="kw-2">&</span><span class="lifetime">'a </span>str, |
| } |
| |
| <span class="doccomment">/// Parses test cases out of the given file, calling `f` on each vector until |
| /// `f` fails or until all the test vectors have been read. `f` can indicate |
| /// failure either by returning `Err()` or by panicking. |
| /// |
| /// Requires the `alloc` default feature to be enabled |
| </span><span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">pub fn </span>run<F>(test_file: File, <span class="kw-2">mut </span>f: F) |
| <span class="kw">where |
| </span>F: FnMut(<span class="kw-2">&</span>str, <span class="kw-2">&mut </span>TestCase) -> <span class="prelude-ty">Result</span><(), error::Unspecified>, |
| { |
| <span class="kw">let </span>lines = <span class="kw-2">&mut </span>test_file.contents.lines(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>current_section = String::from(<span class="string">""</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>failed = <span class="bool-val">false</span>; |
| |
| <span class="kw">while let </span><span class="prelude-val">Some</span>(<span class="kw-2">mut </span>test_case) = parse_test_case(<span class="kw-2">&mut </span>current_section, lines) { |
| <span class="kw">let </span>result = <span class="kw">match </span>f(<span class="kw-2">&</span>current_section, <span class="kw-2">&mut </span>test_case) { |
| <span class="prelude-val">Ok</span>(()) => { |
| <span class="kw">if </span>!test_case |
| .attributes |
| .iter() |
| .any(|<span class="kw-2">&</span>(<span class="kw">_</span>, <span class="kw">_</span>, consumed)| !consumed) |
| { |
| <span class="prelude-val">Ok</span>(()) |
| } <span class="kw">else </span>{ |
| failed = <span class="bool-val">true</span>; |
| <span class="prelude-val">Err</span>(<span class="string">"Test didn't consume all attributes."</span>) |
| } |
| } |
| <span class="prelude-val">Err</span>(error::Unspecified) => <span class="prelude-val">Err</span>(<span class="string">"Test returned Err(error::Unspecified)."</span>), |
| }; |
| |
| <span class="kw">if </span>result.is_err() { |
| failed = <span class="bool-val">true</span>; |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"test_logging"</span>)] |
| </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Err</span>(msg) = result { |
| <span class="macro">std::println!</span>(<span class="string">"{}: {}"</span>, test_file.file_name, msg); |
| |
| <span class="kw">for </span>(name, value, consumed) <span class="kw">in </span>test_case.attributes { |
| <span class="kw">let </span>consumed_str = <span class="kw">if </span>consumed { <span class="string">"" </span>} <span class="kw">else </span>{ <span class="string">" (unconsumed)" </span>}; |
| <span class="macro">std::println!</span>(<span class="string">"{}{} = {}"</span>, name, consumed_str, value); |
| } |
| }; |
| } |
| } |
| |
| <span class="kw">if </span>failed { |
| <span class="macro">panic!</span>(<span class="string">"Test failed."</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Decode an string of hex digits into a sequence of bytes. The input must |
| /// have an even number of digits. |
| </span><span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">pub fn </span>from_hex(hex_str: <span class="kw-2">&</span>str) -> <span class="prelude-ty">Result</span><Vec<u8>, String> { |
| <span class="kw">if </span>hex_str.len() % <span class="number">2 </span>!= <span class="number">0 </span>{ |
| <span class="kw">return </span><span class="prelude-val">Err</span>(String::from( |
| <span class="string">"Hex string does not have an even number of digits"</span>, |
| )); |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>result = Vec::with_capacity(hex_str.len() / <span class="number">2</span>); |
| <span class="kw">for </span>digits <span class="kw">in </span>hex_str.as_bytes().chunks(<span class="number">2</span>) { |
| <span class="kw">let </span>hi = from_hex_digit(digits[<span class="number">0</span>])<span class="question-mark">?</span>; |
| <span class="kw">let </span>lo = from_hex_digit(digits[<span class="number">1</span>])<span class="question-mark">?</span>; |
| result.push((hi * <span class="number">0x10</span>) | lo); |
| } |
| <span class="prelude-val">Ok</span>(result) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">fn </span>from_hex_digit(d: u8) -> <span class="prelude-ty">Result</span><u8, String> { |
| <span class="kw">use </span>core::ops::RangeInclusive; |
| <span class="kw">const </span>DECIMAL: (u8, RangeInclusive<u8>) = (<span class="number">0</span>, <span class="string">b'0'</span>..=<span class="string">b'9'</span>); |
| <span class="kw">const </span>HEX_LOWER: (u8, RangeInclusive<u8>) = (<span class="number">10</span>, <span class="string">b'a'</span>..=<span class="string">b'f'</span>); |
| <span class="kw">const </span>HEX_UPPER: (u8, RangeInclusive<u8>) = (<span class="number">10</span>, <span class="string">b'A'</span>..=<span class="string">b'F'</span>); |
| <span class="kw">for </span>(offset, range) <span class="kw">in </span><span class="kw-2">&</span>[DECIMAL, HEX_LOWER, HEX_UPPER] { |
| <span class="kw">if </span>range.contains(<span class="kw-2">&</span>d) { |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(d - range.start() + offset); |
| } |
| } |
| <span class="prelude-val">Err</span>(<span class="macro">format!</span>(<span class="string">"Invalid hex digit '{}'"</span>, d <span class="kw">as </span>char)) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"alloc"</span>)] |
| </span><span class="kw">fn </span>parse_test_case( |
| current_section: <span class="kw-2">&mut </span>String, |
| lines: <span class="kw-2">&mut </span><span class="kw">dyn </span>Iterator<Item = <span class="kw-2">&</span>str>, |
| ) -> <span class="prelude-ty">Option</span><TestCase> { |
| <span class="kw">let </span><span class="kw-2">mut </span>attributes = Vec::new(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>is_first_line = <span class="bool-val">true</span>; |
| <span class="kw">loop </span>{ |
| <span class="kw">let </span>line = lines.next(); |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"test_logging"</span>)] |
| </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(text) = <span class="kw-2">&</span>line { |
| <span class="macro">std::println!</span>(<span class="string">"Line: {}"</span>, text); |
| } |
| } |
| |
| <span class="kw">match </span>line { |
| <span class="comment">// If we get to EOF when we're not in the middle of a test case, |
| // then we're done. |
| </span><span class="prelude-val">None </span><span class="kw">if </span>is_first_line => { |
| <span class="kw">return </span><span class="prelude-val">None</span>; |
| } |
| |
| <span class="comment">// End of the file on a non-empty test cases ends the test case. |
| </span><span class="prelude-val">None </span>=> { |
| <span class="kw">return </span><span class="prelude-val">Some</span>(TestCase { attributes }); |
| } |
| |
| <span class="comment">// A blank line ends a test case if the test case isn't empty. |
| </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>line) <span class="kw">if </span>line.is_empty() => { |
| <span class="kw">if </span>!is_first_line { |
| <span class="kw">return </span><span class="prelude-val">Some</span>(TestCase { attributes }); |
| } |
| <span class="comment">// Ignore leading blank lines. |
| </span>} |
| |
| <span class="comment">// Comments start with '#'; ignore them. |
| </span><span class="prelude-val">Some</span>(<span class="kw-2">ref </span>line) <span class="kw">if </span>line.starts_with(<span class="string">'#'</span>) => (), |
| |
| <span class="prelude-val">Some</span>(<span class="kw-2">ref </span>line) <span class="kw">if </span>line.starts_with(<span class="string">'['</span>) => { |
| <span class="macro">assert!</span>(is_first_line); |
| <span class="macro">assert!</span>(line.ends_with(<span class="string">']'</span>)); |
| current_section.truncate(<span class="number">0</span>); |
| current_section.push_str(line); |
| <span class="kw">let _ </span>= current_section.pop(); |
| <span class="kw">let _ </span>= current_section.remove(<span class="number">0</span>); |
| } |
| |
| <span class="prelude-val">Some</span>(<span class="kw-2">ref </span>line) => { |
| is_first_line = <span class="bool-val">false</span>; |
| |
| <span class="kw">let </span>parts: Vec<<span class="kw-2">&</span>str> = line.splitn(<span class="number">2</span>, <span class="string">" = "</span>).collect(); |
| <span class="kw">if </span>parts.len() != <span class="number">2 </span>{ |
| <span class="macro">panic!</span>(<span class="string">"Syntax error: Expected Key = Value."</span>); |
| }; |
| |
| <span class="kw">let </span>key = parts[<span class="number">0</span>].trim(); |
| <span class="kw">let </span>value = parts[<span class="number">1</span>].trim(); |
| |
| <span class="comment">// Don't allow the value to be ommitted. An empty value can be |
| // represented as an empty quoted string. |
| </span><span class="macro">assert_ne!</span>(value.len(), <span class="number">0</span>); |
| |
| <span class="comment">// Checking is_none() ensures we don't accept duplicate keys. |
| </span>attributes.push((String::from(key), String::from(value), <span class="bool-val">false</span>)); |
| } |
| } |
| } |
| } |
| |
| <span class="doccomment">/// Deterministic implementations of `ring::rand::SecureRandom`. |
| /// |
| /// These implementations are particularly useful for testing implementations |
| /// of randomized algorithms & protocols using known-answer-tests where the |
| /// test vectors contain the random seed to use. They are also especially |
| /// useful for some types of fuzzing. |
| </span><span class="attribute">#[doc(hidden)] |
| </span><span class="kw">pub mod </span>rand { |
| <span class="kw">use crate</span>::{error, polyfill, rand}; |
| |
| <span class="doccomment">/// An implementation of `SecureRandom` that always fills the output slice |
| /// with the given byte. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>FixedByteRandom { |
| <span class="kw">pub </span>byte: u8, |
| } |
| |
| <span class="kw">impl </span>rand::sealed::SecureRandom <span class="kw">for </span>FixedByteRandom { |
| <span class="kw">fn </span>fill_impl(<span class="kw-2">&</span><span class="self">self</span>, dest: <span class="kw-2">&mut </span>[u8]) -> <span class="prelude-ty">Result</span><(), error::Unspecified> { |
| polyfill::slice::fill(dest, <span class="self">self</span>.byte); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="doccomment">/// An implementation of `SecureRandom` that always fills the output slice |
| /// with the slice in `bytes`. The length of the slice given to `slice` |
| /// must match exactly. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>FixedSliceRandom<<span class="lifetime">'a</span>> { |
| <span class="kw">pub </span>bytes: <span class="kw-2">&</span><span class="lifetime">'a </span>[u8], |
| } |
| |
| <span class="kw">impl </span>rand::sealed::SecureRandom <span class="kw">for </span>FixedSliceRandom<<span class="lifetime">'_</span>> { |
| <span class="kw">fn </span>fill_impl(<span class="kw-2">&</span><span class="self">self</span>, dest: <span class="kw-2">&mut </span>[u8]) -> <span class="prelude-ty">Result</span><(), error::Unspecified> { |
| dest.copy_from_slice(<span class="self">self</span>.bytes); |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="doccomment">/// An implementation of `SecureRandom` where each slice in `bytes` is a |
| /// test vector for one call to `fill()`. *Not thread-safe.* |
| /// |
| /// The first slice in `bytes` is the output for the first call to |
| /// `fill()`, the second slice is the output for the second call to |
| /// `fill()`, etc. The output slice passed to `fill()` must have exactly |
| /// the length of the corresponding entry in `bytes`. `current` must be |
| /// initialized to zero. `fill()` must be called exactly once for each |
| /// entry in `bytes`. |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>FixedSliceSequenceRandom<<span class="lifetime">'a</span>> { |
| <span class="doccomment">/// The value. |
| </span><span class="kw">pub </span>bytes: <span class="kw-2">&</span><span class="lifetime">'a </span>[<span class="kw-2">&</span><span class="lifetime">'a </span>[u8]], |
| <span class="kw">pub </span>current: core::cell::UnsafeCell<usize>, |
| } |
| |
| <span class="kw">impl </span>rand::sealed::SecureRandom <span class="kw">for </span>FixedSliceSequenceRandom<<span class="lifetime">'_</span>> { |
| <span class="kw">fn </span>fill_impl(<span class="kw-2">&</span><span class="self">self</span>, dest: <span class="kw-2">&mut </span>[u8]) -> <span class="prelude-ty">Result</span><(), error::Unspecified> { |
| <span class="kw">let </span>current = <span class="kw">unsafe </span>{ <span class="kw-2">*</span><span class="self">self</span>.current.get() }; |
| <span class="kw">let </span>bytes = <span class="self">self</span>.bytes[current]; |
| dest.copy_from_slice(bytes); |
| <span class="comment">// Remember that we returned this slice and prepare to return |
| // the next one, if any. |
| </span><span class="kw">unsafe </span>{ <span class="kw-2">*</span><span class="self">self</span>.current.get() += <span class="number">1 </span>}; |
| <span class="prelude-val">Ok</span>(()) |
| } |
| } |
| |
| <span class="kw">impl </span>Drop <span class="kw">for </span>FixedSliceSequenceRandom<<span class="lifetime">'_</span>> { |
| <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="comment">// Ensure that `fill()` was called exactly the right number of |
| // times. |
| </span><span class="macro">assert_eq!</span>(<span class="kw">unsafe </span>{ <span class="kw-2">*</span><span class="self">self</span>.current.get() }, <span class="self">self</span>.bytes.len()); |
| } |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests { |
| <span class="kw">use crate</span>::{error, test}; |
| |
| <span class="attribute">#[test] |
| </span><span class="kw">fn </span>one_ok() { |
| test::run(<span class="macro">test_file!</span>(<span class="string">"test_1_tests.txt"</span>), |<span class="kw">_</span>, test_case| { |
| <span class="kw">let _ </span>= test_case.consume_string(<span class="string">"Key"</span>); |
| <span class="prelude-val">Ok</span>(()) |
| }); |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic(expected = <span class="string">"Test failed."</span>)] |
| </span><span class="kw">fn </span>one_err() { |
| test::run(<span class="macro">test_file!</span>(<span class="string">"test_1_tests.txt"</span>), |<span class="kw">_</span>, test_case| { |
| <span class="kw">let _ </span>= test_case.consume_string(<span class="string">"Key"</span>); |
| <span class="prelude-val">Err</span>(error::Unspecified) |
| }); |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic(expected = <span class="string">"Oh noes!"</span>)] |
| </span><span class="kw">fn </span>one_panics() { |
| test::run(<span class="macro">test_file!</span>(<span class="string">"test_1_tests.txt"</span>), |<span class="kw">_</span>, test_case| { |
| <span class="kw">let _ </span>= test_case.consume_string(<span class="string">"Key"</span>); |
| <span class="macro">panic!</span>(<span class="string">"Oh noes!"</span>); |
| }); |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic(expected = <span class="string">"Test failed."</span>)] |
| </span><span class="kw">fn </span>first_err() { |
| err_one(<span class="number">0</span>) |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic(expected = <span class="string">"Test failed."</span>)] |
| </span><span class="kw">fn </span>middle_err() { |
| err_one(<span class="number">1</span>) |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic(expected = <span class="string">"Test failed."</span>)] |
| </span><span class="kw">fn </span>last_err() { |
| err_one(<span class="number">2</span>) |
| } |
| |
| <span class="kw">fn </span>err_one(test_to_fail: usize) { |
| <span class="kw">let </span><span class="kw-2">mut </span>n = <span class="number">0</span>; |
| test::run(<span class="macro">test_file!</span>(<span class="string">"test_3_tests.txt"</span>), |<span class="kw">_</span>, test_case| { |
| <span class="kw">let _ </span>= test_case.consume_string(<span class="string">"Key"</span>); |
| <span class="kw">let </span>result = <span class="kw">if </span>n != test_to_fail { |
| <span class="prelude-val">Ok</span>(()) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(error::Unspecified) |
| }; |
| n += <span class="number">1</span>; |
| result |
| }); |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic(expected = <span class="string">"Oh Noes!"</span>)] |
| </span><span class="kw">fn </span>first_panic() { |
| panic_one(<span class="number">0</span>) |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic(expected = <span class="string">"Oh Noes!"</span>)] |
| </span><span class="kw">fn </span>middle_panic() { |
| panic_one(<span class="number">1</span>) |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic(expected = <span class="string">"Oh Noes!"</span>)] |
| </span><span class="kw">fn </span>last_panic() { |
| panic_one(<span class="number">2</span>) |
| } |
| |
| <span class="kw">fn </span>panic_one(test_to_fail: usize) { |
| <span class="kw">let </span><span class="kw-2">mut </span>n = <span class="number">0</span>; |
| test::run(<span class="macro">test_file!</span>(<span class="string">"test_3_tests.txt"</span>), |<span class="kw">_</span>, test_case| { |
| <span class="kw">let _ </span>= test_case.consume_string(<span class="string">"Key"</span>); |
| <span class="kw">if </span>n == test_to_fail { |
| <span class="macro">panic!</span>(<span class="string">"Oh Noes!"</span>); |
| }; |
| n += <span class="number">1</span>; |
| <span class="prelude-val">Ok</span>(()) |
| }); |
| } |
| |
| <span class="attribute">#[test] |
| #[should_panic(expected = <span class="string">"Syntax error: Expected Key = Value."</span>)] |
| </span><span class="kw">fn </span>syntax_error() { |
| test::run(<span class="macro">test_file!</span>(<span class="string">"test_1_syntax_error_tests.txt"</span>), |<span class="kw">_</span>, <span class="kw">_</span>| <span class="prelude-val">Ok</span>(())); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="ring" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
