build: support the test suite on Windows

CMakeLists.txt

@@ -18,9 +18,13 @@ set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 set(CMAKE_Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/swift)
 
+include(CTest)
 include(SwiftSupport)
 
 add_subdirectory(Sources)
+if(BUILD_TESTING)
+  add_subdirectory(Tests)
+endif()
 
 get_property(SWIFT_NUMERICS_EXPORTS GLOBAL PROPERTY SWIFT_NUMERICS_EXPORTS)
 export(TARGETS ${SWIFT_NUMERICS_EXPORTS}

Tests/CMakeLists.txt

@@ -0,0 +1,24 @@
+#[[
+This source file is part of the Swift Numerics open source project
+
+Copyright (c) 2019 Apple Inc. and the Swift Numerics project authors
+Licensed under Apache License v2.0 with Runtime Library Exception
+
+See https://swift.org/LICENSE.txt for license information
+#]]
+
+find_package(dispatch CONFIG QUIET)
+find_package(Foundation CONFIG QUIET)
+find_package(XCTest CONFIG QUIET)
+
+add_subdirectory(ComplexTests)
+add_subdirectory(RealTests)
+
+add_executable(SwiftNumericsTestRunner
+  WindowsMain.swift)
+target_link_libraries(SwiftNumericsTestRunner PRIVATE
+  ComplexTests
+  RealTests)
+
+add_test(NAME SwiftNumericsTestRunner
+  COMMAND SwiftNumericsTestRunner)

Tests/ComplexTests/CMakeLists.txt

@@ -0,0 +1,21 @@
+#[[
+This source file is part of the Swift Numerics open source project
+
+Copyright (c) 2019 Apple Inc. and the Swift Numerics project authors
+Licensed under Apache License v2.0 with Runtime Library Exception
+
+See https://swift.org/LICENSE.txt for license information
+#]]
+
+add_library(ComplexTests
+  ArithmeticTests.swift
+  DifferentiableTests.swift
+  PropertyTests.swift)
+set_target_properties(ComplexTests PROPERTIES
+  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+target_compile_options(ComplexTests PRIVATE
+  -enable-testing)
+target_link_libraries(ComplexTests PUBLIC
+  $<$<NOT:$<PLATFORM_ID:Darwin>>:Foundation>
+  ComplexModule
+  XCTest)

Tests/RealTests/CMakeLists.txt

@@ -0,0 +1,19 @@
+#[[
+This source file is part of the Swift Numerics open source project
+
+Copyright (c) 2019 Apple Inc. and the Swift Numerics project authors
+Licensed under Apache License v2.0 with Runtime Library Exception
+
+See https://swift.org/LICENSE.txt for license information
+#]]
+
+add_library(RealTests
+  IntegerExponentTests.swift
+  RealTests.swift
+  RealTestSupport.swift)
+target_compile_options(RealTests PRIVATE
+  -enable-testing)
+target_link_libraries(RealTests PUBLIC
+  $<$<NOT:$<PLATFORM_ID:Darwin>>:Foundation>
+  RealModule
+  XCTest)

Tests/WindowsMain.swift

@@ -0,0 +1,76 @@
+//===--- WindowsMain.swift ------------------------------------*- swift -*-===//
+//
+// This source file is part of the Swift Numerics open source project
+//
+// Copyright (c) 2019 Apple Inc. and the Swift Numerics project authors
+// Licensed under Apache License v2.0 with Runtime Library Exception
+//
+// See https://swift.org/LICENSE.txt for license information
+//
+//===----------------------------------------------------------------------===//
+
+#if os(Windows)
+import XCTest
+
+@testable
+import RealTests
+
+@testable
+import ComplexTests
+
+extension ElementaryFunctionChecks {
+  static var all = testCase([
+    ("testFloat", ElementaryFunctionChecks.testFloat),
+    ("testDouble", ElementaryFunctionChecks.testDouble),
+  ])
+}
+
+extension IntegerExponentTests {
+  static var all = testCase([
+    ("testFloat", IntegerExponentTests.testFloat),
+    ("testDouble", IntegerExponentTests.testDouble),
+  ])
+}
+
+extension ArithmeticTests {
+  static var all = testCase([
+    ("testPolar", ArithmeticTests.testPolar),
+    ("testBaudinSmith", ArithmeticTests.testBaudinSmith),
+    ("testDivisionByZero", ArithmeticTests.testDivisionByZero),
+  ])
+}
+
+#if canImport(_Differentiation)
+  extension DifferentiableTests {
+    static var all = testCase([
+      ("testComponentGetter", DifferentiableTests.testComponentGetter),
+      ("testConjugate",  DifferentiableTests.testConjugate),
+      ("testArithmetics", DifferentiableTests.testArithmetics),
+    ])
+  }
+#endif
+
+extension PropertyTests {
+  static var all = testCase([
+    ("testProperties", PropertyTests.testProperties),
+    ("testEquatableHashable", PropertyTests.testEquatableHashable),
+    ("testCodable", PropertyTests.testCodable),
+  ])
+}
+
+var testCases = [
+  ElementaryFunctionChecks.all,
+  IntegerExponentTests.all,
+  ArithmeticTests.all,
+  PropertyTests.all,
+]
+
+#if canImport(_Differentiation)
+testCases += [
+  DifferentiableTests.all
+]
+#endif
+
+XCTMain(testCases)
+
+#endif