Rewrite the tests! now they're cross-platform! (#7315)

* begin exploratory rewriting of tests

* continue working on tests

* more test work! holy butts vcpkg-tests/plan.cpp was a bunch of work

* finish writing new tests

  - [x] write catch2 tests
  - [ ] rewrite/at least delete the VS project files
  - [ ] document running tests

* Fix tests to work on WSL, rewrite test vcxproj

still need to test on macOS
also, delete tests.pch.h

* Condense add_test calls

toolsrc/.clang-format

@@ -28,6 +28,7 @@ Cpp11BracedListStyle: true
 IndentCaseLabels: true
 KeepEmptyLinesAtTheStartOfBlocks: false
 NamespaceIndentation: All
+ForEachMacros: [TEST_CASE, SECTION]
 PenaltyReturnTypeOnItsOwnLine: 1000
 SpaceAfterTemplateKeyword: false
 SpaceBeforeCpp11BracedList: false

toolsrc/CMakeLists.txt

@@ -2,6 +2,8 @@ cmake_minimum_required(VERSION 3.3)
 
 project(vcpkg C CXX)
 
+enable_testing()
+
 OPTION(DEFINE_DISABLE_METRICS "Option for disabling metrics" OFF)
 OPTION(VCPKG_ALLOW_APPLE_CLANG "Option for allowing apple clang" OFF)
 
@@ -33,6 +35,7 @@ if(GCC OR CLANG)
 endif()
 
 file(GLOB_RECURSE VCPKGLIB_SOURCES src/vcpkg/*.cpp)
+file(GLOB_RECURSE VCPKGTEST_SOURCES src/vcpkg-tests/*.cpp)
 
 if (DEFINE_DISABLE_METRICS)
     set(DISABLE_METRICS_VALUE "1")
@@ -44,6 +47,15 @@ add_executable(vcpkg src/vcpkg.cpp ${VCPKGLIB_SOURCES})
 target_compile_definitions(vcpkg PRIVATE -DDISABLE_METRICS=${DISABLE_METRICS_VALUE})
 target_include_directories(vcpkg PRIVATE include)
 
+
+add_executable(vcpkg-test EXCLUDE_FROM_ALL ${VCPKGTEST_SOURCES} ${VCPKGLIB_SOURCES})
+target_compile_definitions(vcpkg-test PRIVATE -DDISABLE_METRICS=${DISABLE_METRICS_VALUE})
+target_include_directories(vcpkg-test PRIVATE include)
+
+foreach(TEST_NAME arguments chrono dependencies paragraph plan specifier supports)
+    add_test(${TEST_NAME} vcpkg-test [${TEST_NAME}])
+endforeach()
+
 if(CLANG)
     include(CheckCXXSourceCompiles)
     check_cxx_source_compiles("#include <iostream>
@@ -57,8 +69,10 @@ endif()
 
 if(GCC OR (CLANG AND USES_LIBSTDCXX))
     target_link_libraries(vcpkg PRIVATE stdc++fs)
+    target_link_libraries(vcpkg-test PRIVATE stdc++fs)
 elseif(CLANG)
     target_link_libraries(vcpkg PRIVATE c++fs)
+    target_link_libraries(vcpkg-test PRIVATE c++fs)
 endif()
 
 if(MSVC)