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Feature: generic matchers (#1843)

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This commit extends the Matchers feature with the ability to have type-independent (e.g. templated) matchers. This is done by adding a new base type that Matchers can extend, `MatcherGenericBase`, and overloads of operators `!`, `&&` and `||` that handle matchers extending `MatcherGenericBase` in a special manner.

These new matchers can also take their arguments as values and non-const references.

Closes #1307 
Closes #1553 
Closes #1554 

Co-authored-by: Martin Hořeňovský <martin.horenovsky@gmail.com>
This commit is contained in:
melak47
2020-02-16 11:19:10 +01:00
committed by GitHub
parent db1a0465dc
commit 17c4b2d093
15 changed files with 1192 additions and 16 deletions
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72
tests/SelfTest/Baselines/tap.sw.approved.txt
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@@ -524,6 +524,68 @@ ok {test-number} - c == i for: 3 == 3
ok {test-number} - c == i for: 4 == 4
# Character pretty printing
ok {test-number} - c == i for: 5 == 5
# Combining MatchAllOfGeneric does not nest
ok {test-number} - with 1 message: 'std::is_same< decltype(MatcherA() && MatcherB() && MatcherC()), Catch::Matchers::Impl::MatchAllOfGeneric<MatcherA, MatcherB, MatcherC> >::value'
# Combining MatchAllOfGeneric does not nest
ok {test-number} - 1, MatcherA() && MatcherB() && MatcherC() for: 1 ( equals: (int) 1 or (float) 1.0f and equals: (long long) 1 and equals: (T) 1 )
# Combining MatchAllOfGeneric does not nest
ok {test-number} - with 1 message: 'std::is_same< decltype(MatcherA() && MatcherB() && MatcherC() && MatcherD()), Catch::Matchers::Impl::MatchAllOfGeneric<MatcherA, MatcherB, MatcherC, MatcherD> >::value'
# Combining MatchAllOfGeneric does not nest
ok {test-number} - 1, MatcherA() && MatcherB() && MatcherC() && MatcherD() for: 1 ( equals: (int) 1 or (float) 1.0f and equals: (long long) 1 and equals: (T) 1 and equals: true )
# Combining MatchAnyOfGeneric does not nest
ok {test-number} - with 1 message: 'std::is_same< decltype(MatcherA() || MatcherB() || MatcherC()), Catch::Matchers::Impl::MatchAnyOfGeneric<MatcherA, MatcherB, MatcherC> >::value'
# Combining MatchAnyOfGeneric does not nest
ok {test-number} - 1, MatcherA() || MatcherB() || MatcherC() for: 1 ( equals: (int) 1 or (float) 1.0f or equals: (long long) 1 or equals: (T) 1 )
# Combining MatchAnyOfGeneric does not nest
ok {test-number} - with 1 message: 'std::is_same< decltype(MatcherA() || MatcherB() || MatcherC() || MatcherD()), Catch::Matchers::Impl::MatchAnyOfGeneric<MatcherA, MatcherB, MatcherC, MatcherD> >::value'
# Combining MatchAnyOfGeneric does not nest
ok {test-number} - 1, MatcherA() || MatcherB() || MatcherC() || MatcherD() for: 1 ( equals: (int) 1 or (float) 1.0f or equals: (long long) 1 or equals: (T) 1 or equals: true )
# Combining MatchNotOfGeneric does not nest
ok {test-number} - with 1 message: 'std::is_same< decltype(!MatcherA()), Catch::Matchers::Impl::MatchNotOfGeneric<MatcherA> >::value'
# Combining MatchNotOfGeneric does not nest
ok {test-number} - 0, !MatcherA() for: 0 not equals: (int) 1 or (float) 1.0f
# Combining MatchNotOfGeneric does not nest
ok {test-number} - with 1 message: 'std::is_same< decltype(!!MatcherA()), MatcherA const& >::value'
# Combining MatchNotOfGeneric does not nest
ok {test-number} - 1, !!MatcherA() for: 1 equals: (int) 1 or (float) 1.0f
# Combining MatchNotOfGeneric does not nest
ok {test-number} - with 1 message: 'std::is_same< decltype(!!!MatcherA()), Catch::Matchers::Impl::MatchNotOfGeneric<MatcherA> >::value'
# Combining MatchNotOfGeneric does not nest
ok {test-number} - 0, !!!MatcherA() for: 0 not equals: (int) 1 or (float) 1.0f
# Combining MatchNotOfGeneric does not nest
ok {test-number} - with 1 message: 'std::is_same< decltype(!!!!MatcherA()), MatcherA const & >::value'
# Combining MatchNotOfGeneric does not nest
ok {test-number} - 1, !!!!MatcherA() for: 1 equals: (int) 1 or (float) 1.0f
# Combining concrete matchers does not use templated matchers
ok {test-number} - with 1 message: 'std::is_same< decltype(StartsWith("foo") || (StartsWith("bar") && EndsWith("bar") && !EndsWith("foo"))), Catch::Matchers::Impl::MatchAnyOf<std::string> >::value'
# Combining only templated matchers
ok {test-number} - with 1 message: 'std::is_same< decltype(MatcherA() || MatcherB()), Catch::Matchers::Impl::MatchAnyOfGeneric<MatcherA, MatcherB> >::value'
# Combining only templated matchers
ok {test-number} - 1, MatcherA() || MatcherB() for: 1 ( equals: (int) 1 or (float) 1.0f or equals: (long long) 1 )
# Combining only templated matchers
ok {test-number} - with 1 message: 'std::is_same< decltype(MatcherA() && MatcherB()), Catch::Matchers::Impl::MatchAllOfGeneric<MatcherA, MatcherB> >::value'
# Combining only templated matchers
ok {test-number} - 1, MatcherA() && MatcherB() for: 1 ( equals: (int) 1 or (float) 1.0f and equals: (long long) 1 )
# Combining only templated matchers
ok {test-number} - with 1 message: 'std::is_same< decltype(MatcherA() || !MatcherB()), Catch::Matchers::Impl::MatchAnyOfGeneric<MatcherA, Catch::Matchers::Impl::MatchNotOfGeneric<MatcherB>> >::value'
# Combining only templated matchers
ok {test-number} - 1, MatcherA() || !MatcherB() for: 1 ( equals: (int) 1 or (float) 1.0f or not equals: (long long) 1 )
# Combining templated and concrete matchers
ok {test-number} - vec, Predicate<std::vector<int>>([](auto const& vec) { return std::all_of(vec.begin(), vec.end(), [](int elem) { return elem % 2 == 1; }); }, "All elements are odd") && !EqualsRange(a) for: { 1, 3, 5 } ( matches predicate: "All elements are odd" and not Equals: { 5, 3, 1 } )
# Combining templated and concrete matchers
ok {test-number} - str, StartsWith("foo") && EqualsRange(arr) && EndsWith("bar") for: "foobar" ( starts with: "foo" and Equals: { 'f', 'o', 'o', 'b', 'a', 'r' } and ends with: "bar" )
# Combining templated and concrete matchers
ok {test-number} - str, StartsWith("foo") && !EqualsRange(bad_arr) && EndsWith("bar") for: "foobar" ( starts with: "foo" and not Equals: { 'o', 'o', 'f', 'b', 'a', 'r' } and ends with: "bar" )
# Combining templated and concrete matchers
ok {test-number} - str, EqualsRange(arr) && StartsWith("foo") && EndsWith("bar") for: "foobar" ( Equals: { 'f', 'o', 'o', 'b', 'a', 'r' } and starts with: "foo" and ends with: "bar" )
# Combining templated and concrete matchers
ok {test-number} - str, !EqualsRange(bad_arr) && StartsWith("foo") && EndsWith("bar") for: "foobar" ( not Equals: { 'o', 'o', 'f', 'b', 'a', 'r' } and starts with: "foo" and ends with: "bar" )
# Combining templated and concrete matchers
ok {test-number} - str, EqualsRange(bad_arr) || (StartsWith("foo") && EndsWith("bar")) for: "foobar" ( Equals: { 'o', 'o', 'f', 'b', 'a', 'r' } or ( starts with: "foo" and ends with: "bar" ) )
# Combining templated and concrete matchers
ok {test-number} - str, (StartsWith("foo") && EndsWith("bar")) || EqualsRange(bad_arr) for: "foobar" ( ( starts with: "foo" and ends with: "bar" ) or Equals: { 'o', 'o', 'f', 'b', 'a', 'r' } )
# Combining templated matchers
ok {test-number} - container, EqualsRange(a) || EqualsRange(b) || EqualsRange(c) for: { 1, 2, 3 } ( Equals: { 1, 2, 3 } or Equals: { 0, 1, 2 } or Equals: { 4, 5, 6 } )
# Commas in various macros are allowed
ok {test-number} - std::vector<constructor_throws>{constructor_throws{}, constructor_throws{}}
# Commas in various macros are allowed
@@ -1688,6 +1750,14 @@ ok {test-number} - rng() == 0x<hex digits> for: 4261393167 (0x<hex digits>) == 4
not ok {test-number} - explicitly with 1 message: 'Message from section one'
# Output from all sections is reported
not ok {test-number} - explicitly with 1 message: 'Message from section two'
# Overloaded comma or address-of operators are not used
ok {test-number} - (EvilMatcher(), EvilMatcher()), EvilCommaOperatorUsed
# Overloaded comma or address-of operators are not used
ok {test-number} - &EvilMatcher(), EvilAddressOfOperatorUsed
# Overloaded comma or address-of operators are not used
ok {test-number} - EvilMatcher() || EvilMatcher() && !EvilMatcher()
# Overloaded comma or address-of operators are not used
ok {test-number} - (EvilMatcher() && EvilMatcher()) || !EvilMatcher()
# Parse test names and tags
ok {test-number} - spec.hasFilters() == false for: false == false
# Parse test names and tags
@@ -3610,5 +3680,5 @@ ok {test-number} - q3 == 23. for: 23.0 == 23.0
ok {test-number} -
# xmlentitycheck
ok {test-number} -
1..1801
1..1836