Add 'contrib/catch2/' from commit 'bc524d70253a4ab2fe40c3ca3e5666e267c0a4d1'

git-subtree-dir: contrib/catch2
git-subtree-mainline: a8b0ea58e60bb0326b7f7c8f3c736d89ce9ef1df
git-subtree-split: bc524d70253a4ab2fe40c3ca3e5666e267c0a4d1

1 files changed, 72 insertions, 0 deletions

diff --git a/contrib/catch2/tests/SelfTest/IntrospectiveTests/TestCaseInfoHasher.tests.cpp b/contrib/catch2/tests/SelfTest/IntrospectiveTests/TestCaseInfoHasher.tests.cpp
new file mode 100644
index 0000000..03cb3f0
--- /dev/null
+++ b/contrib/catch2/tests/SelfTest/IntrospectiveTests/TestCaseInfoHasher.tests.cpp
@@ -0,0 +1,72 @@
+
+//              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_test_case_info.hpp>
+#include <catch2/internal/catch_test_case_info_hasher.hpp>
+
+static constexpr Catch::SourceLineInfo dummySourceLineInfo = CATCH_INTERNAL_LINEINFO;
+
+using Catch::TestCaseInfo;
+using Catch::TestCaseInfoHasher;
+
+TEST_CASE("Hashers with same seed produce same hash", "[test-case-hash]") {
+    TestCaseInfo dummy( "", { "name", "[a-tag]" }, dummySourceLineInfo );
+
+    TestCaseInfoHasher h1( 0x12345678 );
+    TestCaseInfoHasher h2( 0x12345678 );
+
+    REQUIRE( h1( dummy ) == h2( dummy ) );
+}
+
+TEST_CASE(
+    "Hashers with different seed produce different hash with same test case",
+    "[test-case-hash]") {
+    TestCaseInfo dummy( "", { "name", "[a-tag]" }, dummySourceLineInfo );
+
+    TestCaseInfoHasher h1( 0x12345678 );
+    TestCaseInfoHasher h2( 0x87654321 );
+
+    REQUIRE( h1( dummy ) != h2( dummy ) );
+}
+
+TEST_CASE("Hashing test case produces same hash across multiple calls",
+          "[test-case-hash]") {
+    TestCaseInfo dummy( "", { "name", "[a-tag]" }, dummySourceLineInfo );
+
+    TestCaseInfoHasher h( 0x12345678 );
+
+    REQUIRE( h( dummy ) == h( dummy ) );
+}
+
+TEST_CASE("Hashing different test cases produces different result", "[test-case-hash]") {
+    TestCaseInfoHasher h( 0x12345678 );
+    SECTION("Different test name") {
+        TestCaseInfo dummy1( "class", { "name-1", "[a-tag]" }, dummySourceLineInfo );
+        TestCaseInfo dummy2(
+            "class", { "name-2", "[a-tag]" }, dummySourceLineInfo );
+
+        REQUIRE( h( dummy1 ) != h( dummy2 ) );
+    }
+    SECTION("Different classname") {
+        TestCaseInfo dummy1(
+            "class-1", { "name", "[a-tag]" }, dummySourceLineInfo );
+        TestCaseInfo dummy2(
+            "class-2", { "name", "[a-tag]" }, dummySourceLineInfo );
+
+        REQUIRE( h( dummy1 ) != h( dummy2 ) );
+    }
+    SECTION("Different tags") {
+        TestCaseInfo dummy1(
+            "class", { "name", "[a-tag]" }, dummySourceLineInfo );
+        TestCaseInfo dummy2(
+            "class", { "name", "[b-tag]" }, dummySourceLineInfo );
+
+        REQUIRE( h( dummy1 ) != h( dummy2 ) );
+    }
+}