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e1e6872c4c
This is both a really big and a really small commit. It is small in
that it only contains renaming, moving and modification of include
directives caused by this.
It is really big in the obvious way of touching something like 200
files.
The new rules for naming files is simple: headers use the `.hpp`
extension. The rules for physical file layout is still kinda in
progress, but the basics are also simple:
* Significant parts of functionality get their own subfolder
* Benchmarking is in `catch2/benchmark`
* Matchers are in `catch2/matchers`
* Generators are in `catch2/generators`
* Reporters are in `catch2/reporters`
* Baseline testing facilities are in `catch2/`
* Various top level folders also contain `internal` subfolder,
with files that users probably do not want to include directly,
at least not until they have to write something like their own
reporter.
* The exact files in these subfolders is likely to change later
on
Note that while some includes were cleaned up in this commit, it
is only the low hanging fruit and further cleanup using automatic
tooling will happen later.
Also note that various include guards, copyright notices and file
headers will also be standardized later, rather than in this commit.
219 lines
6.5 KiB
C++
219 lines
6.5 KiB
C++
/*
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* Created by Phil on 28/04/2011.
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* Copyright 2011 Two Blue Cubes Ltd. All rights reserved.
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*
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* Distributed under the Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#include <catch2/catch_test_macros.hpp>
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#include <catch2/catch_approx.hpp>
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#include <cmath>
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using Catch::Approx;
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namespace { namespace ApproxTests {
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#ifndef APPROX_TEST_HELPERS_INCLUDED // Don't compile this more than once per TU
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#define APPROX_TEST_HELPERS_INCLUDED
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inline double divide( double a, double b ) {
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return a/b;
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}
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class StrongDoubleTypedef {
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double d_ = 0.0;
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public:
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explicit StrongDoubleTypedef(double d) : d_(d) {}
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explicit operator double() const { return d_; }
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};
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inline std::ostream& operator<<( std::ostream& os, StrongDoubleTypedef td ) {
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return os << "StrongDoubleTypedef(" << static_cast<double>(td) << ")";
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}
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#endif
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using namespace Catch::literals;
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///////////////////////////////////////////////////////////////////////////////
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TEST_CASE( "A comparison that uses literals instead of the normal constructor", "[Approx]" ) {
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double d = 1.23;
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REQUIRE( d == 1.23_a );
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REQUIRE( d != 1.22_a );
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REQUIRE( -d == -1.23_a );
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REQUIRE( d == 1.2_a .epsilon(.1) );
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REQUIRE( d != 1.2_a .epsilon(.001) );
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REQUIRE( d == 1_a .epsilon(.3) );
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}
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TEST_CASE( "Some simple comparisons between doubles", "[Approx]" ) {
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double d = 1.23;
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REQUIRE( d == Approx( 1.23 ) );
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REQUIRE( d != Approx( 1.22 ) );
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REQUIRE( d != Approx( 1.24 ) );
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REQUIRE( d == 1.23_a );
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REQUIRE( d != 1.22_a );
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REQUIRE( Approx( d ) == 1.23 );
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REQUIRE( Approx( d ) != 1.22 );
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REQUIRE( Approx( d ) != 1.24 );
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}
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///////////////////////////////////////////////////////////////////////////////
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TEST_CASE( "Approximate comparisons with different epsilons", "[Approx]" ) {
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double d = 1.23;
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REQUIRE( d != Approx( 1.231 ) );
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REQUIRE( d == Approx( 1.231 ).epsilon( 0.1 ) );
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}
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///////////////////////////////////////////////////////////////////////////////
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TEST_CASE( "Less-than inequalities with different epsilons", "[Approx]" ) {
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double d = 1.23;
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REQUIRE( d <= Approx( 1.24 ) );
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REQUIRE( d <= Approx( 1.23 ) );
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REQUIRE_FALSE( d <= Approx( 1.22 ) );
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REQUIRE( d <= Approx( 1.22 ).epsilon(0.1) );
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}
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///////////////////////////////////////////////////////////////////////////////
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TEST_CASE( "Greater-than inequalities with different epsilons", "[Approx]" ) {
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double d = 1.23;
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REQUIRE( d >= Approx( 1.22 ) );
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REQUIRE( d >= Approx( 1.23 ) );
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REQUIRE_FALSE( d >= Approx( 1.24 ) );
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REQUIRE( d >= Approx( 1.24 ).epsilon(0.1) );
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}
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///////////////////////////////////////////////////////////////////////////////
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TEST_CASE( "Approximate comparisons with floats", "[Approx]" ) {
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REQUIRE( 1.23f == Approx( 1.23f ) );
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REQUIRE( 0.0f == Approx( 0.0f ) );
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}
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///////////////////////////////////////////////////////////////////////////////
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TEST_CASE( "Approximate comparisons with ints", "[Approx]" ) {
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REQUIRE( 1 == Approx( 1 ) );
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REQUIRE( 0 == Approx( 0 ) );
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}
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///////////////////////////////////////////////////////////////////////////////
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TEST_CASE( "Approximate comparisons with mixed numeric types", "[Approx]" ) {
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const double dZero = 0;
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const double dSmall = 0.00001;
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const double dMedium = 1.234;
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REQUIRE( 1.0f == Approx( 1 ) );
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REQUIRE( 0 == Approx( dZero) );
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REQUIRE( 0 == Approx( dSmall ).margin( 0.001 ) );
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REQUIRE( 1.234f == Approx( dMedium ) );
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REQUIRE( dMedium == Approx( 1.234f ) );
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}
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///////////////////////////////////////////////////////////////////////////////
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TEST_CASE( "Use a custom approx", "[Approx][custom]" ) {
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double d = 1.23;
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Approx approx = Approx::custom().epsilon( 0.01 );
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REQUIRE( d == approx( 1.23 ) );
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REQUIRE( d == approx( 1.22 ) );
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REQUIRE( d == approx( 1.24 ) );
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REQUIRE( d != approx( 1.25 ) );
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REQUIRE( approx( d ) == 1.23 );
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REQUIRE( approx( d ) == 1.22 );
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REQUIRE( approx( d ) == 1.24 );
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REQUIRE( approx( d ) != 1.25 );
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}
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TEST_CASE( "Approximate PI", "[Approx][PI]" ) {
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REQUIRE( divide( 22, 7 ) == Approx( 3.141 ).epsilon( 0.001 ) );
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REQUIRE( divide( 22, 7 ) != Approx( 3.141 ).epsilon( 0.0001 ) );
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}
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///////////////////////////////////////////////////////////////////////////////
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TEST_CASE( "Absolute margin", "[Approx]" ) {
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REQUIRE( 104.0 != Approx(100.0) );
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REQUIRE( 104.0 == Approx(100.0).margin(5) );
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REQUIRE( 104.0 == Approx(100.0).margin(4) );
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REQUIRE( 104.0 != Approx(100.0).margin(3) );
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REQUIRE( 100.3 != Approx(100.0) );
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REQUIRE( 100.3 == Approx(100.0).margin(0.5) );
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}
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TEST_CASE("Approx with exactly-representable margin", "[Approx]") {
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CHECK( 0.25f == Approx(0.0f).margin(0.25f) );
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CHECK( 0.0f == Approx(0.25f).margin(0.25f) );
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CHECK( 0.5f == Approx(0.25f).margin(0.25f) );
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CHECK( 245.0f == Approx(245.25f).margin(0.25f) );
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CHECK( 245.5f == Approx(245.25f).margin(0.25f) );
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}
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TEST_CASE("Approx setters validate their arguments", "[Approx]") {
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REQUIRE_NOTHROW(Approx(0).margin(0));
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REQUIRE_NOTHROW(Approx(0).margin(1234656));
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REQUIRE_THROWS_AS(Approx(0).margin(-2), std::domain_error);
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REQUIRE_NOTHROW(Approx(0).epsilon(0));
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REQUIRE_NOTHROW(Approx(0).epsilon(1));
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REQUIRE_THROWS_AS(Approx(0).epsilon(-0.001), std::domain_error);
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REQUIRE_THROWS_AS(Approx(0).epsilon(1.0001), std::domain_error);
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}
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TEST_CASE("Default scale is invisible to comparison", "[Approx]") {
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REQUIRE(101.000001 != Approx(100).epsilon(0.01));
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REQUIRE(std::pow(10, -5) != Approx(std::pow(10, -7)));
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}
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TEST_CASE("Epsilon only applies to Approx's value", "[Approx]") {
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REQUIRE(101.01 != Approx(100).epsilon(0.01));
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}
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TEST_CASE("Assorted miscellaneous tests", "[Approx][approvals]") {
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REQUIRE(INFINITY == Approx(INFINITY));
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REQUIRE(-INFINITY != Approx(INFINITY));
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REQUIRE(1 != Approx(INFINITY));
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REQUIRE(INFINITY != Approx(1));
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REQUIRE(NAN != Approx(NAN));
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REQUIRE_FALSE(NAN == Approx(NAN));
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}
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TEST_CASE( "Comparison with explicitly convertible types", "[Approx]" )
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{
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StrongDoubleTypedef td(10.0);
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REQUIRE(td == Approx(10.0));
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REQUIRE(Approx(10.0) == td);
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REQUIRE(td != Approx(11.0));
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REQUIRE(Approx(11.0) != td);
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REQUIRE(td <= Approx(10.0));
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REQUIRE(td <= Approx(11.0));
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REQUIRE(Approx(10.0) <= td);
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REQUIRE(Approx(9.0) <= td);
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REQUIRE(td >= Approx(9.0));
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REQUIRE(td >= Approx(td));
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REQUIRE(Approx(td) >= td);
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REQUIRE(Approx(11.0) >= td);
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}
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}} // namespace ApproxTests
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