catch2/examples/210-Evt-EventListeners.cpp

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// Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
// 210-Evt-EventListeners.cpp
// Contents:
// 1. Printing of listener data
// 2. My listener and registration
// 3. Test cases
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#include <catch2/catch_test_macros.hpp>
#include <catch2/reporters/catch_reporter_event_listener.hpp>
#include <catch2/reporters/catch_reporter_registrars.hpp>
#include <catch2/catch_test_case_info.hpp>
#include <iostream>
// -----------------------------------------------------------------------
// 1. Printing of listener data:
//
namespace {
std::string ws(int const level) {
return std::string( 2 * level, ' ' );
}
std::ostream& operator<<(std::ostream& out, Catch::Tag t) {
return out << "original: " << t.original;
}
template< typename T >
std::ostream& operator<<( std::ostream& os, std::vector<T> const& v ) {
os << "{ ";
for ( const auto& x : v )
os << x << ", ";
return os << "}";
}
// struct SourceLineInfo {
// char const* file;
// std::size_t line;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::SourceLineInfo const& info ) {
os << ws(level ) << title << ":\n"
<< ws(level+1) << "- file: " << info.file << "\n"
<< ws(level+1) << "- line: " << info.line << "\n";
}
//struct MessageInfo {
// std::string macroName;
// std::string message;
// SourceLineInfo lineInfo;
// ResultWas::OfType type;
// unsigned int sequence;
//};
void print( std::ostream& os, int const level, Catch::MessageInfo const& info ) {
os << ws(level+1) << "- macroName: '" << info.macroName << "'\n"
<< ws(level+1) << "- message '" << info.message << "'\n";
print( os,level+1 , "- lineInfo", info.lineInfo );
os << ws(level+1) << "- sequence " << info.sequence << "\n";
}
void print( std::ostream& os, int const level, std::string const& title, std::vector<Catch::MessageInfo> const& v ) {
os << ws(level ) << title << ":\n";
for ( const auto& x : v )
{
os << ws(level+1) << "{\n";
print( os, level+2, x );
os << ws(level+1) << "}\n";
}
// os << ws(level+1) << "\n";
}
// struct TestRunInfo {
// std::string name;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::TestRunInfo const& info ) {
os << ws(level ) << title << ":\n"
<< ws(level+1) << "- name: " << info.name << "\n";
}
// struct Counts {
// std::size_t total() const;
// bool allPassed() const;
// bool allOk() const;
//
// std::size_t passed = 0;
// std::size_t failed = 0;
// std::size_t failedButOk = 0;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::Counts const& info ) {
os << ws(level ) << title << ":\n"
<< ws(level+1) << "- total(): " << info.total() << "\n"
<< ws(level+1) << "- allPassed(): " << info.allPassed() << "\n"
<< ws(level+1) << "- allOk(): " << info.allOk() << "\n"
<< ws(level+1) << "- passed: " << info.passed << "\n"
<< ws(level+1) << "- failed: " << info.failed << "\n"
<< ws(level+1) << "- failedButOk: " << info.failedButOk << "\n";
}
// struct Totals {
// Counts assertions;
// Counts testCases;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::Totals const& info ) {
os << ws(level) << title << ":\n";
print( os, level+1, "- assertions", info.assertions );
print( os, level+1, "- testCases" , info.testCases );
}
// struct TestRunStats {
// TestRunInfo runInfo;
// Totals totals;
// bool aborting;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::TestRunStats const& info ) {
os << ws(level) << title << ":\n";
print( os, level+1 , "- runInfo", info.runInfo );
print( os, level+1 , "- totals" , info.totals );
os << ws(level+1) << "- aborting: " << info.aborting << "\n";
}
// struct Tag {
// StringRef original, lowerCased;
// };
//
//
// enum class TestCaseProperties : uint8_t {
// None = 0,
// IsHidden = 1 << 1,
// ShouldFail = 1 << 2,
// MayFail = 1 << 3,
// Throws = 1 << 4,
// NonPortable = 1 << 5,
// Benchmark = 1 << 6
// };
//
//
// struct TestCaseInfo : NonCopyable {
//
// bool isHidden() const;
// bool throws() const;
// bool okToFail() const;
// bool expectedToFail() const;
//
//
// std::string name;
// std::string className;
// std::vector<Tag> tags;
// SourceLineInfo lineInfo;
// TestCaseProperties properties = TestCaseProperties::None;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::TestCaseInfo const& info ) {
os << ws(level ) << title << ":\n"
<< ws(level+1) << "- isHidden(): " << info.isHidden() << "\n"
<< ws(level+1) << "- throws(): " << info.throws() << "\n"
<< ws(level+1) << "- okToFail(): " << info.okToFail() << "\n"
<< ws(level+1) << "- expectedToFail(): " << info.expectedToFail() << "\n"
<< ws(level+1) << "- tagsAsString(): '" << info.tagsAsString() << "'\n"
<< ws(level+1) << "- name: '" << info.name << "'\n"
<< ws(level+1) << "- className: '" << info.className << "'\n"
<< ws(level+1) << "- tags: " << info.tags << "\n";
print( os, level+1 , "- lineInfo", info.lineInfo );
os << ws(level+1) << "- properties (flags): 0x" << std::hex << static_cast<uint32_t>(info.properties) << std::dec << "\n";
}
// struct TestCaseStats {
// TestCaseInfo testInfo;
// Totals totals;
// std::string stdOut;
// std::string stdErr;
// bool aborting;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::TestCaseStats const& info ) {
os << ws(level ) << title << ":\n";
print( os, level+1 , "- testInfo", *info.testInfo );
print( os, level+1 , "- totals" , info.totals );
os << ws(level+1) << "- stdOut: " << info.stdOut << "\n"
<< ws(level+1) << "- stdErr: " << info.stdErr << "\n"
<< ws(level+1) << "- aborting: " << info.aborting << "\n";
}
// struct SectionInfo {
// std::string name;
// std::string description;
// SourceLineInfo lineInfo;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::SectionInfo const& info ) {
os << ws(level ) << title << ":\n"
<< ws(level+1) << "- name: " << info.name << "\n";
print( os, level+1 , "- lineInfo", info.lineInfo );
}
// struct SectionStats {
// SectionInfo sectionInfo;
// Counts assertions;
// double durationInSeconds;
// bool missingAssertions;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::SectionStats const& info ) {
os << ws(level ) << title << ":\n";
print( os, level+1 , "- sectionInfo", info.sectionInfo );
print( os, level+1 , "- assertions" , info.assertions );
os << ws(level+1) << "- durationInSeconds: " << info.durationInSeconds << "\n"
<< ws(level+1) << "- missingAssertions: " << info.missingAssertions << "\n";
}
// struct AssertionInfo
// {
// StringRef macroName;
// SourceLineInfo lineInfo;
// StringRef capturedExpression;
// ResultDisposition::Flags resultDisposition;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::AssertionInfo const& info ) {
os << ws(level ) << title << ":\n"
<< ws(level+1) << "- macroName: '" << info.macroName << "'\n";
print( os, level+1 , "- lineInfo" , info.lineInfo );
os << ws(level+1) << "- capturedExpression: '" << info.capturedExpression << "'\n"
<< ws(level+1) << "- resultDisposition (flags): 0x" << std::hex << info.resultDisposition << std::dec << "\n";
}
//struct AssertionResultData
//{
// std::string reconstructExpression() const;
//
// std::string message;
// mutable std::string reconstructedExpression;
// LazyExpression lazyExpression;
// ResultWas::OfType resultType;
//};
void print( std::ostream& os, int const level, std::string const& title, Catch::AssertionResultData const& info ) {
os << ws(level ) << title << ":\n"
<< ws(level+1) << "- reconstructExpression(): '" << info.reconstructExpression() << "'\n"
<< ws(level+1) << "- message: '" << info.message << "'\n"
<< ws(level+1) << "- lazyExpression: '" << "(info.lazyExpression)" << "'\n"
<< ws(level+1) << "- resultType: '" << info.resultType << "'\n";
}
//class AssertionResult {
// bool isOk() const;
// bool succeeded() const;
// ResultWas::OfType getResultType() const;
// bool hasExpression() const;
// bool hasMessage() const;
// std::string getExpression() const;
// std::string getExpressionInMacro() const;
// bool hasExpandedExpression() const;
// std::string getExpandedExpression() const;
// std::string getMessage() const;
// SourceLineInfo getSourceInfo() const;
// std::string getTestMacroName() const;
//
// AssertionInfo m_info;
// AssertionResultData m_resultData;
//};
void print( std::ostream& os, int const level, std::string const& title, Catch::AssertionResult const& info ) {
os << ws(level ) << title << ":\n"
<< ws(level+1) << "- isOk(): " << info.isOk() << "\n"
<< ws(level+1) << "- succeeded(): " << info.succeeded() << "\n"
<< ws(level+1) << "- getResultType(): " << info.getResultType() << "\n"
<< ws(level+1) << "- hasExpression(): " << info.hasExpression() << "\n"
<< ws(level+1) << "- hasMessage(): " << info.hasMessage() << "\n"
<< ws(level+1) << "- getExpression(): '" << info.getExpression() << "'\n"
<< ws(level+1) << "- getExpressionInMacro(): '" << info.getExpressionInMacro() << "'\n"
<< ws(level+1) << "- hasExpandedExpression(): " << info.hasExpandedExpression() << "\n"
<< ws(level+1) << "- getExpandedExpression(): " << info.getExpandedExpression() << "'\n"
<< ws(level+1) << "- getMessage(): '" << info.getMessage() << "'\n";
print( os, level+1 , "- getSourceInfo(): ", info.getSourceInfo() );
os << ws(level+1) << "- getTestMacroName(): '" << info.getTestMacroName() << "'\n";
print( os, level+1 , "- *** m_info (AssertionInfo)", info.m_info );
print( os, level+1 , "- *** m_resultData (AssertionResultData)", info.m_resultData );
}
// struct AssertionStats {
// AssertionResult assertionResult;
// std::vector<MessageInfo> infoMessages;
// Totals totals;
// };
void print( std::ostream& os, int const level, std::string const& title, Catch::AssertionStats const& info ) {
os << ws(level ) << title << ":\n";
print( os, level+1 , "- assertionResult", info.assertionResult );
print( os, level+1 , "- infoMessages", info.infoMessages );
print( os, level+1 , "- totals", info.totals );
}
// -----------------------------------------------------------------------
// 2. My listener and registration:
//
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char const * dashed_line =
"--------------------------------------------------------------------------";
struct MyListener : Catch::EventListenerBase {
using EventListenerBase::EventListenerBase; // inherit constructor
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// Get rid of Wweak-tables
~MyListener() override;
// The whole test run starting
void testRunStarting( Catch::TestRunInfo const& testRunInfo ) override {
std::cout
<< std::boolalpha
<< "\nEvent: testRunStarting:\n";
print( std::cout, 1, "- testRunInfo", testRunInfo );
}
// The whole test run ending
void testRunEnded( Catch::TestRunStats const& testRunStats ) override {
std::cout
<< dashed_line
<< "\nEvent: testRunEnded:\n";
print( std::cout, 1, "- testRunStats", testRunStats );
}
// A test is being skipped (because it is "hidden")
void skipTest( Catch::TestCaseInfo const& testInfo ) override {
std::cout
<< dashed_line
<< "\nEvent: skipTest:\n";
print( std::cout, 1, "- testInfo", testInfo );
}
// Test cases starting
void testCaseStarting( Catch::TestCaseInfo const& testInfo ) override {
std::cout
<< dashed_line
<< "\nEvent: testCaseStarting:\n";
print( std::cout, 1, "- testInfo", testInfo );
}
// Test cases ending
void testCaseEnded( Catch::TestCaseStats const& testCaseStats ) override {
std::cout << "\nEvent: testCaseEnded:\n";
print( std::cout, 1, "testCaseStats", testCaseStats );
}
// Sections starting
void sectionStarting( Catch::SectionInfo const& sectionInfo ) override {
std::cout << "\nEvent: sectionStarting:\n";
print( std::cout, 1, "- sectionInfo", sectionInfo );
}
// Sections ending
void sectionEnded( Catch::SectionStats const& sectionStats ) override {
std::cout << "\nEvent: sectionEnded:\n";
print( std::cout, 1, "- sectionStats", sectionStats );
}
// Assertions before/ after
void assertionStarting( Catch::AssertionInfo const& assertionInfo ) override {
std::cout << "\nEvent: assertionStarting:\n";
print( std::cout, 1, "- assertionInfo", assertionInfo );
}
void assertionEnded( Catch::AssertionStats const& assertionStats ) override {
std::cout << "\nEvent: assertionEnded:\n";
print( std::cout, 1, "- assertionStats", assertionStats );
}
};
} // end anonymous namespace
CATCH_REGISTER_LISTENER( MyListener )
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// Get rid of Wweak-tables
MyListener::~MyListener() {}
// -----------------------------------------------------------------------
// 3. Test cases:
//
TEST_CASE( "1: Hidden testcase", "[.hidden]" ) {
}
TEST_CASE( "2: Testcase with sections", "[tag-A][tag-B]" ) {
int i = 42;
REQUIRE( i == 42 );
SECTION("Section 1") {
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INFO("Section 1");
i = 7;
SECTION("Section 1.1") {
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INFO("Section 1.1");
REQUIRE( i == 42 );
}
}
SECTION("Section 2") {
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INFO("Section 2");
REQUIRE( i == 42 );
}
WARN("At end of test case");
}
struct Fixture {
int fortytwo() const {
return 42;
}
};
TEST_CASE_METHOD( Fixture, "3: Testcase with class-based fixture", "[tag-C][tag-D]" ) {
REQUIRE( fortytwo() == 42 );
}
// Compile & run:
// - g++ -std=c++14 -Wall -I$(CATCH_SINGLE_INCLUDE) -o 210-Evt-EventListeners 210-Evt-EventListeners.cpp && 210-Evt-EventListeners --success
// - cl -EHsc -I%CATCH_SINGLE_INCLUDE% 210-Evt-EventListeners.cpp && 210-Evt-EventListeners --success
// Expected compact output (all assertions):
//
// prompt> 210-Evt-EventListeners --reporter compact --success
// result omitted for brevity.