Merge pull request #144 from stephentyrone/test-support

Factor test support out into a module

Author: stephentyrone

Package.swift

@@ -24,10 +24,12 @@ let package = Package(
   targets: [
     .target(name: "ComplexModule", dependencies: ["RealModule"]),
     .target(name: "Numerics", dependencies: ["ComplexModule", "RealModule"]),
-    .target(name: "_NumericsShims", dependencies: []),
     .target(name: "RealModule", dependencies: ["_NumericsShims"]),
 
-    .testTarget(name: "ComplexTests", dependencies: ["Numerics"]),
-    .testTarget(name: "RealTests", dependencies: ["RealModule"]),
+    .target(name: "_NumericsShims", dependencies: []),
+    .target(name: "_TestSupport", dependencies: ["Numerics"]),
+    
+    .testTarget(name: "ComplexTests", dependencies: ["_TestSupport"]),
+    .testTarget(name: "RealTests", dependencies: ["_TestSupport"]),
   ]
 )

Sources/CMakeLists.txt

@@ -11,3 +11,6 @@ add_subdirectory(_NumericsShims)
 add_subdirectory(ComplexModule)
 add_subdirectory(Numerics)
 add_subdirectory(RealModule)
+if(BUILD_TESTING)
+  add_subdirectory(_TestSupport)
+endif()

Sources/_TestSupport/CMakeLists.txt

@@ -0,0 +1,19 @@
+#[[
+This source file is part of the Swift Numerics open source project
+
+Copyright (c) 2019-2020 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(_TestSupport
+  RealTestSupport.swift)
+set_target_properties(_TestSupport PROPERTIES
+  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+target_link_libraries(_TestSupport PUBLIC
+  Numerics)
+
+
+_install_target(_TestSupport)
+set_property(GLOBAL APPEND PROPERTY SWIFT_NUMERICS_EXPORTS _TestSupport)

Tests/RealTests/RealTestSupport.swift renamed to Sources/_TestSupport/RealTestSupport.swift

@@ -13,13 +13,13 @@ import XCTest
 import RealModule
 
 #if (arch(i386) || arch(x86_64)) && !os(Windows) && !os(Android)
-typealias TestLiteralType = Float80
+public typealias TestLiteralType = Float80
 #else
-typealias TestLiteralType = Double
+public typealias TestLiteralType = Double
 #endif
 
 @discardableResult
-func assertClose<T>(
+public func assertClose<T>(
   _ expected: TestLiteralType,
   _ observed: T,
   allowedError: T = 16,
@@ -69,7 +69,7 @@ func assertClose<T>(
   return ulps
 }
 
-func assertClose<T>(
+public func assertClose<T>(
   _ expected: TestLiteralType,
   _ observed: T,
   allowedError: T = 16,
@@ -82,7 +82,7 @@ func assertClose<T>(
   ))
 }
 
-internal protocol FixedWidthFloatingPoint: BinaryFloatingPoint
+public protocol FixedWidthFloatingPoint: BinaryFloatingPoint
 where Exponent: FixedWidthInteger,
       RawSignificand: FixedWidthInteger { }
 

Tests/ComplexTests/CMakeLists.txt

@@ -20,4 +20,5 @@ target_link_libraries(ComplexTests PUBLIC
   $<$<NOT:$<PLATFORM_ID:Darwin>>:Foundation>
   ComplexModule
   Numerics
+  _TestSupport
   XCTest)

Tests/RealTests/ApproximateEqualityTests.swift

@@ -12,6 +12,7 @@
 
 import RealModule
 import XCTest
+import _TestSupport
 
 final class ApproximateEqualityTests: XCTestCase {
 

Tests/RealTests/CMakeLists.txt

@@ -10,11 +10,11 @@ See https://swift.org/LICENSE.txt for license information
 add_library(RealTests
   ApproximateEqualityTests.swift
   ElementaryFunctionChecks.swift
-  IntegerExponentTests.swift
-  RealTestSupport.swift)
+  IntegerExponentTests.swift)
 target_compile_options(RealTests PRIVATE
   -enable-testing)
 target_link_libraries(RealTests PUBLIC
   $<$<NOT:$<PLATFORM_ID:Darwin>>:Foundation>
   RealModule
+  _TestSupport
   XCTest)

Tests/RealTests/ElementaryFunctionChecks.swift

@@ -11,6 +11,7 @@
 
 import XCTest
 import RealModule
+import _TestSupport
 
 internal extension ElementaryFunctions where Self: BinaryFloatingPoint {
   static func elementaryFunctionChecks() {

Tests/RealTests/IntegerExponentTests.swift

@@ -11,6 +11,7 @@
 
 import XCTest
 import RealModule
+import _TestSupport
 
 internal extension Real where Self: FixedWidthFloatingPoint {