import catch2 3.8.1vendor/catch2/3.8.1vendor/catch2

1 files changed, 204 insertions, 0 deletions

diff --git a/tests/SelfTest/UsageTests/Exception.tests.cpp b/tests/SelfTest/UsageTests/Exception.tests.cpp
new file mode 100644
index 0000000..7c6b0c8
--- /dev/null
+++ b/tests/SelfTest/UsageTests/Exception.tests.cpp
@@ -0,0 +1,204 @@
+
+//              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
+
+#include <catch2/catch_test_macros.hpp>
+#include <catch2/catch_translate_exception.hpp>
+#include <catch2/matchers/catch_matchers_string.hpp>
+
+#include <string>
+#include <stdexcept>
+
+#ifdef _MSC_VER
+#pragma warning(disable:4702) // Unreachable code -- unconditional throws and so on
+#endif
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wweak-vtables"
+#pragma clang diagnostic ignored "-Wmissing-noreturn"
+#pragma clang diagnostic ignored "-Wunreachable-code-return"
+#endif
+
+namespace {
+
+    int thisThrows() {
+        throw std::domain_error("expected exception");
+        return 1;
+    }
+
+    int thisDoesntThrow() {
+        return 0;
+    }
+
+    class CustomException {
+    public:
+        explicit CustomException(const std::string& msg)
+            : m_msg(msg) {}
+
+        std::string const& getMessage() const {
+            return m_msg;
+        }
+
+    private:
+        std::string m_msg;
+    };
+
+    class CustomStdException : public std::exception {
+    public:
+        explicit CustomStdException(const std::string& msg)
+            : m_msg(msg) {}
+        ~CustomStdException() noexcept override = default;
+
+        CustomStdException( CustomStdException const& ) = default;
+        CustomStdException& operator=( CustomStdException const& ) = default;
+
+        std::string const& getMessage() const {
+            return m_msg;
+        }
+
+    private:
+        std::string m_msg;
+    };
+
+    [[noreturn]] void throwCustom() {
+        throw CustomException("custom exception - not std");
+    }
+
+}
+
+TEST_CASE( "When checked exceptions are thrown they can be expected or unexpected", "[!throws]" ) {
+    REQUIRE_THROWS_AS( thisThrows(), std::domain_error );
+    REQUIRE_NOTHROW( thisDoesntThrow() );
+    REQUIRE_THROWS( thisThrows() );
+}
+
+TEST_CASE( "Expected exceptions that don't throw or unexpected exceptions fail the test", "[.][failing][!throws]" ) {
+    CHECK_THROWS_AS( thisThrows(), std::string );
+    CHECK_THROWS_AS( thisDoesntThrow(), std::domain_error );
+    CHECK_NOTHROW( thisThrows() );
+}
+
+TEST_CASE( "When unchecked exceptions are thrown directly they are always failures", "[.][failing][!throws]" ) {
+    throw std::domain_error( "unexpected exception" );
+}
+
+TEST_CASE( "An unchecked exception reports the line of the last assertion", "[.][failing][!throws]" ) {
+    CHECK( 1 == 1 );
+    throw std::domain_error( "unexpected exception" );
+}
+
+TEST_CASE( "When unchecked exceptions are thrown from sections they are always failures", "[.][failing][!throws]" ) {
+    SECTION( "section name" ) {
+        throw std::domain_error("unexpected exception");
+    }
+}
+
+TEST_CASE( "When unchecked exceptions are thrown from functions they are always failures", "[.][failing][!throws]" ) {
+    CHECK( thisThrows() == 0 );
+}
+
+TEST_CASE( "When unchecked exceptions are thrown during a REQUIRE the test should abort fail", "[.][failing][!throws]" ) {
+    REQUIRE( thisThrows() == 0 );
+    FAIL( "This should never happen" );
+}
+
+TEST_CASE( "When unchecked exceptions are thrown during a CHECK the test should continue", "[.][failing][!throws]" ) {
+    try {
+        CHECK(thisThrows() == 0);
+    }
+    catch(...) {
+        FAIL( "This should never happen" );
+    }
+}
+
+TEST_CASE( "When unchecked exceptions are thrown, but caught, they do not affect the test", "[!throws]" ) {
+    try {
+        throw std::domain_error( "unexpected exception" );
+    }
+    catch(...) {} // NOLINT(bugprone-empty-catch)
+}
+
+
+CATCH_TRANSLATE_EXCEPTION( CustomException const& ex ) {
+    return ex.getMessage();
+}
+
+CATCH_TRANSLATE_EXCEPTION( CustomStdException const& ex ) {
+    return ex.getMessage();
+}
+
+CATCH_TRANSLATE_EXCEPTION( double const& ex ) {
+    return Catch::Detail::stringify( ex );
+}
+
+TEST_CASE("Non-std exceptions can be translated", "[.][failing][!throws]" ) {
+    throw CustomException( "custom exception" );
+}
+
+TEST_CASE("Custom std-exceptions can be custom translated", "[.][failing][!throws]" ) {
+    throw CustomStdException( "custom std exception" );
+}
+
+TEST_CASE( "Custom exceptions can be translated when testing for nothrow", "[.][failing][!throws]" ) {
+    REQUIRE_NOTHROW( throwCustom() );
+}
+
+TEST_CASE( "Custom exceptions can be translated when testing for throwing as something else", "[.][failing][!throws]" ) {
+    REQUIRE_THROWS_AS( throwCustom(), std::exception );
+}
+
+TEST_CASE( "Unexpected exceptions can be translated", "[.][failing][!throws]"  ) {
+    throw double( 3.14 ); // NOLINT(readability-redundant-casting): the type is important here, so we want to be explicit
+}
+
+TEST_CASE("Thrown string literals are translated", "[.][failing][!throws]") {
+    throw "For some reason someone is throwing a string literal!";
+}
+
+TEST_CASE("thrown std::strings are translated", "[.][failing][!throws]") {
+    throw std::string{ "Why would you throw a std::string?" };
+}
+
+
+TEST_CASE( "Exception messages can be tested for", "[!throws]" ) {
+    using namespace Catch::Matchers;
+    SECTION( "exact match" )
+        REQUIRE_THROWS_WITH( thisThrows(), "expected exception" );
+    SECTION( "different case" )
+    REQUIRE_THROWS_WITH( thisThrows(), Equals( "expecteD Exception", Catch::CaseSensitive::No ) );
+    SECTION( "wildcarded" ) {
+        REQUIRE_THROWS_WITH( thisThrows(), StartsWith( "expected" ) );
+        REQUIRE_THROWS_WITH( thisThrows(), EndsWith( "exception" ) );
+        REQUIRE_THROWS_WITH( thisThrows(), ContainsSubstring( "except" ) );
+        REQUIRE_THROWS_WITH( thisThrows(), ContainsSubstring( "exCept", Catch::CaseSensitive::No ) );
+    }
+}
+
+TEST_CASE( "Mismatching exception messages failing the test", "[.][failing][!throws]" ) {
+    REQUIRE_THROWS_WITH( thisThrows(), "expected exception" );
+    REQUIRE_THROWS_WITH( thisThrows(), "should fail" );
+    REQUIRE_THROWS_WITH( thisThrows(), "expected exception" );
+}
+
+TEST_CASE( "#748 - captures with unexpected exceptions", "[.][failing][!throws][!shouldfail]" ) {
+    int answer = 42;
+    CAPTURE( answer );
+    // the message should be printed on the first two sections but not on the third
+    SECTION( "outside assertions" ) {
+        thisThrows();
+    }
+    SECTION( "inside REQUIRE_NOTHROW" ) {
+        REQUIRE_NOTHROW( thisThrows() );
+    }
+    SECTION( "inside REQUIRE_THROWS" ) {
+        REQUIRE_THROWS( thisThrows() );
+    }
+}
+
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif