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Add equality operators to compare Enum with enumerated value #112

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Add equality operators to compare Enum with enumerated value #112

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16 changes: 16 additions & 0 deletions enum.h
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Original file line number Diff line number Diff line change
Expand Up @@ -934,6 +934,22 @@ inline bool operator ==(const Enum &a, const Enum &b) \
{ return a._to_integral() == b._to_integral(); } \
\
BETTER_ENUMS_UNUSED BETTER_ENUMS_CONSTEXPR_ \
inline bool operator ==(const Enum &a, Enum::_enumerated b) \
{ return a._to_integral() == b; } \
\
BETTER_ENUMS_UNUSED BETTER_ENUMS_CONSTEXPR_ \
inline bool operator ==(Enum::_enumerated a, const Enum &b) \
{ return a == b._to_integral(); } \
\
BETTER_ENUMS_UNUSED BETTER_ENUMS_CONSTEXPR_ \
inline bool operator !=(const Enum &a, Enum::_enumerated b) \
{ return a._to_integral() != b; } \
\
BETTER_ENUMS_UNUSED BETTER_ENUMS_CONSTEXPR_ \
inline bool operator !=(Enum::_enumerated a, const Enum &b) \
{ return a != b._to_integral(); } \
\
BETTER_ENUMS_UNUSED BETTER_ENUMS_CONSTEXPR_ \
inline bool operator !=(const Enum &a, const Enum &b) \
{ return a._to_integral() != b._to_integral(); } \
\
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28 changes: 27 additions & 1 deletion test/cxxtest/general.h
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Original file line number Diff line number Diff line change
Expand Up @@ -412,7 +412,6 @@ class EnumTests : public CxxTest::TestSuite {

void test_from_index_unchecked()
{

TS_ASSERT_EQUALS((+Channel::Red), Channel::_from_index_unchecked(0));
TS_ASSERT_EQUALS((+Channel::Green), Channel::_from_index_unchecked(1));
TS_ASSERT_EQUALS((+Channel::Blue), Channel::_from_index_unchecked(2));
Expand All @@ -424,6 +423,33 @@ class EnumTests : public CxxTest::TestSuite {
TS_ASSERT_EQUALS((+Compression::Huffman), Compression::_from_index_unchecked(1));
TS_ASSERT_EQUALS((+Compression::Default), Compression::_from_index_unchecked(2));
}

void test_equality_operators() {
Channel red = Channel::Red, green = Channel::Green, blue = Channel::Blue;

TS_ASSERT_EQUALS(red, Channel::Red);
TS_ASSERT_EQUALS(blue, Channel::Blue);
TS_ASSERT_EQUALS(green, Channel::Green);

TS_ASSERT_EQUALS(Channel::Red, red);
TS_ASSERT_EQUALS(Channel::Blue, blue);
TS_ASSERT_EQUALS(Channel::Green, green);

TS_ASSERT_DIFFERS(red, Channel::Green);
TS_ASSERT_DIFFERS(red, Channel::Blue);
TS_ASSERT_DIFFERS(Channel::Green, red);
TS_ASSERT_DIFFERS(Channel::Blue, red);

TS_ASSERT_DIFFERS(green, Channel::Red);
TS_ASSERT_DIFFERS(green, Channel::Blue);
TS_ASSERT_DIFFERS(Channel::Red, green);
TS_ASSERT_DIFFERS(Channel::Blue, green);

TS_ASSERT_DIFFERS(blue, Channel::Red);
TS_ASSERT_DIFFERS(blue, Channel::Green);
TS_ASSERT_DIFFERS(Channel::Red, blue);
TS_ASSERT_DIFFERS(Channel::Green, blue);
}
};


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