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add support for inequalities

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Jonathan B. Coe 2016-09-24 17:59:23 +01:00 committed by Martin Hořeňovský
parent 5a4dde4b5d
commit 37e1e24309
2 changed files with 50 additions and 0 deletions
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20
include/internal/catch_approx.hpp
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@ -58,6 +58,26 @@ namespace Detail {
return !operator==( rhs, lhs );
}
friend bool operator <= ( double lhs, Approx const& rhs )
{
return lhs < rhs.m_value || lhs == rhs;
}
friend bool operator <= ( Approx const& lhs, double rhs )
{
return lhs.m_value < rhs || lhs == rhs;
}
friend bool operator >= ( double lhs, Approx const& rhs )
{
return lhs > rhs.m_value || lhs == rhs;
}
friend bool operator >= ( Approx const& lhs, double rhs )
{
return lhs.m_value > rhs || lhs == rhs;
}
Approx& epsilon( double newEpsilon ) {
m_epsilon = newEpsilon;
return *this;

30
projects/SelfTest/ApproxTests.cpp
View File

@ -39,6 +39,36 @@ TEST_CASE
REQUIRE( d == Approx( 1.231 ).epsilon( 0.1 ) );
}
///////////////////////////////////////////////////////////////////////////////
TEST_CASE
(
"Less-than inequalities with different epsilons",
"[Approx]"
)
{
double d = 1.23;
REQUIRE( d <= Approx( 1.24 ) );
REQUIRE( d <= Approx( 1.23 ) );
REQUIRE_FALSE( d <= Approx( 1.22 ) );
REQUIRE( d <= Approx( 1.22 ).epsilon(0.1) );
}
///////////////////////////////////////////////////////////////////////////////
TEST_CASE
(
"Greater-than inequalities with different epsilons",
"[Approx]"
)
{
double d = 1.23;
REQUIRE( d >= Approx( 1.22 ) );
REQUIRE( d >= Approx( 1.23 ) );
REQUIRE_FALSE( d >= Approx( 1.24 ) );
REQUIRE( d >= Approx( 1.24 ).epsilon(0.1) );
}
///////////////////////////////////////////////////////////////////////////////
TEST_CASE
(