64 lines
1.6 KiB
Rust
64 lines
1.6 KiB
Rust
use rand::{SeedableRng, Rng, rngs::SmallRng};
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// Having more than 1 test does seem to make a difference
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// (i.e., this calls ptr::swap which having just one test does not).
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#[test]
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fn simple1() {
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assert_eq!(4, 4);
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}
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#[test]
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fn simple2() {
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assert_ne!(42, 24);
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}
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// A test that won't work on miri (tests disabling tests).
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#[test]
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#[cfg_attr(miri, ignore)]
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fn does_not_work_on_miri() {
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let x = 0u8;
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assert!(&x as *const _ as usize % 4 < 4);
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}
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// We also use this to test some external crates, that we cannot depend on in the compiletest suite.
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#[test]
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fn entropy_rng() {
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// Try seeding with "real" entropy.
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let mut rng = SmallRng::from_entropy();
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let _val = rng.gen::<i32>();
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let _val = rng.gen::<isize>();
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let _val = rng.gen::<i128>();
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// Also try per-thread RNG.
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let mut rng = rand::thread_rng();
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let _val = rng.gen::<i32>();
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let _val = rng.gen::<isize>();
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let _val = rng.gen::<i128>();
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}
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#[test]
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fn num_cpus() {
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assert_eq!(num_cpus::get(), 1);
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}
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// FIXME: Remove this `cfg` once we fix https://github.com/rust-lang/miri/issues/1059.
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// We cfg-gate the `should_panic` attribute and the `panic!` itself, so that the test
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// stdout does not depend on the target.
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#[test]
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#[cfg_attr(not(windows), should_panic(expected="Explicit panic"))]
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fn do_panic() { // In large, friendly letters :)
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#[cfg(not(windows))]
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panic!("Explicit panic from test!");
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}
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// FIXME: see above
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#[test]
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#[allow(unconditional_panic)]
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#[cfg_attr(not(windows), should_panic(expected="the len is 0 but the index is 42"))]
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fn fail_index_check() {
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#[cfg(not(windows))]
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[][42]
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}
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