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26 lines
971 B
Plaintext
26 lines
971 B
Plaintext
// Usually we place tests in a `tests` module. This module can be co-located in the file
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// containing the module under test, or it can be located in a separate file
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// (i.e. my_module.rs may have a child file, my_module/tests.rs, that contains a
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// `tests` module)
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// Tests are compiled only if the `test` cfg attribute is true (like when running `cargo test`)
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#[cfg(test)]
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mod tests {
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// The `test` attribute macro identifies functions that will run as tests
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#[test]
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fn basic_addition() {
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// `assert_eq` checks equality, and `assert` checks a boolean condition
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assert_eq!(1 + 1, 2);
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assert!(1 + 1 == 2);
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// There is also `assert_ne`, which checks for inequality
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}
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#[test]
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// The `should_panic` attribute macro identifies tests that should panic; therefore,
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// with this macro, a test that does not panic will fail
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#[should_panic]
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fn oh_no() {
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panic!("this is an expected failure!");
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}
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}
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