Merge pull request #43 from aepsil0n/assert_approx_eq_macros
Implement assertion macros for ApproxEq
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commit
313d6f92d1
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@ -188,6 +188,7 @@ pub use linalg::{
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mod structs;
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mod traits;
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mod linalg;
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mod macros;
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// mod lower_triangular;
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// mod chol;
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@ -0,0 +1,28 @@
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/// Asserts approximate equality within a given tolerance of two values with the
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/// `ApproxEq` trait.
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#[macro_export]
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macro_rules! assert_approx_eq_eps(
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($given: expr, $expected: expr, $eps: expr) => ({
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let eps = &($eps);
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let (given_val, expected_val) = (&($given), &($expected));
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if !ApproxEq::approx_eq_eps(given_val, expected_val, eps) {
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panic!("assertion failed: `left ≈ right` (left: `{}`, right: `{}`, tolerance: `{}`)",
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*given_val, *expected_val, *eps
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)
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}
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})
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)
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/// Asserts approximate equality of two values with the `ApproxEq` trait.
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#[macro_export]
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macro_rules! assert_approx_eq(
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($given: expr, $expected: expr) => ({
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let (given_val, expected_val) = (&($given), &($expected));
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if !ApproxEq::approx_eq(given_val, expected_val) {
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panic!("assertion failed: `left ≈ right` (left: `{}`, right: `{}`, tolerance: `{}`)",
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*given_val, *expected_val,
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ApproxEq::approx_epsilon(Some(*given_val))
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)
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}
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})
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)
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@ -0,0 +1 @@
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mod assert;
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@ -0,0 +1,35 @@
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//! Assertion macro tests
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#![feature(phase)]
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#[phase(plugin)]
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extern crate nalgebra;
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extern crate nalgebra;
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use nalgebra::{ApproxEq, Vec2};
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#[test]
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fn assert_approx_eq_f64() {
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let a = 1.0f64;
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let b = 1.0f64 + 1.0e-12f64;
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assert_approx_eq!(a, b);
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}
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#[test]
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#[should_fail]
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fn assert_approx_eq_vec2_f32_fail() {
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let a = Vec2::new(1.0f32, 0.0);
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let b = Vec2::new(1.1f32, 0.1);
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assert_approx_eq!(a, b);
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}
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#[test]
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fn assert_approx_eq_eps_f32() {
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assert_approx_eq_eps!(1.0f32, 1.1, 0.2);
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}
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#[test]
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#[should_fail]
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fn assert_approx_eq_eps_f64_fail() {
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assert_approx_eq_eps!(1.0f64, 1.1, 0.05);
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}
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