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

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

1 files changed, 78 insertions, 0 deletions

diff --git a/contrib/catch2/examples/100-Fix-Section.cpp b/contrib/catch2/examples/100-Fix-Section.cpp
new file mode 100644
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+++ b/contrib/catch2/examples/100-Fix-Section.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
+
+// 100-Fix-Section.cpp
+
+// Catch has two ways to express fixtures:
+// - Sections (this file)
+// - Traditional class-based fixtures
+
+// main() provided by linkage to Catch2WithMain
+
+#include <catch2/catch_test_macros.hpp>
+#include <vector>
+
+TEST_CASE( "vectors can be sized and resized", "[vector]" ) {
+
+    // For each section, vector v is anew:
+
+    std::vector<int> v( 5 );
+
+    REQUIRE( v.size() == 5 );
+    REQUIRE( v.capacity() >= 5 );
+
+    SECTION( "resizing bigger changes size and capacity" ) {
+        v.resize( 10 );
+
+        REQUIRE( v.size() == 10 );
+        REQUIRE( v.capacity() >= 10 );
+    }
+    SECTION( "resizing smaller changes size but not capacity" ) {
+        v.resize( 0 );
+
+        REQUIRE( v.size() == 0 );
+        REQUIRE( v.capacity() >= 5 );
+    }
+    SECTION( "reserving bigger changes capacity but not size" ) {
+        v.reserve( 10 );
+
+        REQUIRE( v.size() == 5 );
+        REQUIRE( v.capacity() >= 10 );
+    }
+    SECTION( "reserving smaller does not change size or capacity" ) {
+        v.reserve( 0 );
+
+        REQUIRE( v.size() == 5 );
+        REQUIRE( v.capacity() >= 5 );
+    }
+}
+
+// Compile & run:
+// - g++ -std=c++14 -Wall -I$(CATCH_SINGLE_INCLUDE) -o 100-Fix-Section 100-Fix-Section.cpp && 100-Fix-Section --success
+// - cl -EHsc -I%CATCH_SINGLE_INCLUDE% 100-Fix-Section.cpp && 100-Fix-Section --success
+
+// Expected compact output (all assertions):
+//
+// prompt> 100-Fix-Section.exe --reporter compact --success
+// 100-Fix-Section.cpp:17: passed: v.size() == 5 for: 5 == 5
+// 100-Fix-Section.cpp:18: passed: v.capacity() >= 5 for: 5 >= 5
+// 100-Fix-Section.cpp:23: passed: v.size() == 10 for: 10 == 10
+// 100-Fix-Section.cpp:24: passed: v.capacity() >= 10 for: 10 >= 10
+// 100-Fix-Section.cpp:17: passed: v.size() == 5 for: 5 == 5
+// 100-Fix-Section.cpp:18: passed: v.capacity() >= 5 for: 5 >= 5
+// 100-Fix-Section.cpp:29: passed: v.size() == 0 for: 0 == 0
+// 100-Fix-Section.cpp:30: passed: v.capacity() >= 5 for: 5 >= 5
+// 100-Fix-Section.cpp:17: passed: v.size() == 5 for: 5 == 5
+// 100-Fix-Section.cpp:18: passed: v.capacity() >= 5 for: 5 >= 5
+// 100-Fix-Section.cpp:35: passed: v.size() == 5 for: 5 == 5
+// 100-Fix-Section.cpp:36: passed: v.capacity() >= 10 for: 10 >= 10
+// 100-Fix-Section.cpp:17: passed: v.size() == 5 for: 5 == 5
+// 100-Fix-Section.cpp:18: passed: v.capacity() >= 5 for: 5 >= 5
+// 100-Fix-Section.cpp:41: passed: v.size() == 5 for: 5 == 5
+// 100-Fix-Section.cpp:42: passed: v.capacity() >= 5 for: 5 >= 5
+// Passed 1 test case with 16 assertions.