[SR-6829] Add "DEBUG" to Xcode debug configuration (#1518)

* SWIFT_ACTIVE_COMPILATION_CONDITIONS is a list

* Add DEBUG value to SWIFT_ACTIVE_COMPILATION_CONDITIONS for Debug configuration.

* Set debug flag during project generation.

* Test SWIFT_ACTIVE_COMPILATION_CONDITIONS serialization

* Add explicit release case

* Add DEBUG to projectSettings.debug.GCC_PREPROCESSOR_DEFINITIONS

* Add activeCompilationConditions to the Clang targets

* Update BuildPlan tests.

Author: krzyzanowskim

Sources/Build/BuildPlan.swift

@@ -199,6 +199,7 @@ public final class ClangTargetDescription {
         var args = [String]()
         args += buildParameters.toolchain.extraCCFlags
         args += optimizationArguments
+        args += activeCompilationConditions
 
         // Only enable ARC on macOS.
       #if os(macOS)
@@ -230,6 +231,21 @@ public final class ClangTargetDescription {
         }
     }
 
+    /// A list of compilation conditions to enable for conditional compilation expressions.
+    private var activeCompilationConditions: [String] {
+        var compilationConditions = ["-DSWIFT_PACKAGE=1"]
+
+        switch buildParameters.configuration {
+        case .debug:
+            compilationConditions += ["-DDEBUG=1"]
+        case .release:
+            break
+        }
+
+        return compilationConditions
+    }
+
+
     /// Helper function to compute the modulemap path.
     ///
     /// This function either returns path to user provided modulemap or tries to automatically generates it.
@@ -303,7 +319,8 @@ public final class SwiftTargetDescription {
         args += ["-swift-version", String(swiftVersion)]
         args += buildParameters.toolchain.extraSwiftCFlags
         args += optimizationArguments
-        args += ["-j\(SwiftCompilerTool.numThreads)", "-DSWIFT_PACKAGE"]
+        args += ["-j\(SwiftCompilerTool.numThreads)"]
+        args += activeCompilationConditions
         args += additionalFlags
         args += moduleCacheArgs
 
@@ -317,6 +334,20 @@ public final class SwiftTargetDescription {
         return args
     }
 
+    /// A list of compilation conditions to enable for conditional compilation expressions.
+    private var activeCompilationConditions: [String] {
+        var compilationConditions = ["-DSWIFT_PACKAGE"]
+
+        switch buildParameters.configuration {
+        case .debug:
+            compilationConditions += ["-DDEBUG"]
+        case .release:
+            break
+        }
+
+        return compilationConditions
+    }
+
     /// Optimization arguments according to the build configuration.
     private var optimizationArguments: [String] {
         switch buildParameters.configuration {

Sources/Xcodeproj/XcodeProjectModel.swift

@@ -348,6 +348,7 @@ public struct Xcode {
             var FRAMEWORK_SEARCH_PATHS: [String]?
             var GCC_C_LANGUAGE_STANDARD: String?
             var GCC_OPTIMIZATION_LEVEL: String?
+            var GCC_PREPROCESSOR_DEFINITIONS: [String]?
             var HEADER_SEARCH_PATHS: [String]?
             var INFOPLIST_FILE: String?
             var LD_RUNPATH_SEARCH_PATHS: [String]?
@@ -365,14 +366,56 @@ public struct Xcode {
             var SDKROOT: String?
             var SKIP_INSTALL: String?
             var SUPPORTED_PLATFORMS: [String]?
-            var SWIFT_ACTIVE_COMPILATION_CONDITIONS: String?
+            var SWIFT_ACTIVE_COMPILATION_CONDITIONS: [String]?
             var SWIFT_FORCE_STATIC_LINK_STDLIB: String?
             var SWIFT_FORCE_DYNAMIC_LINK_STDLIB: String?
             var SWIFT_OPTIMIZATION_LEVEL: String?
             var SWIFT_VERSION: String?
             var TARGET_NAME: String?
             var USE_HEADERMAP: String?
             var LD: String?
+
+            init(CLANG_CXX_LANGUAGE_STANDARD: String? = nil, CLANG_ENABLE_OBJC_ARC: String? = nil, COMBINE_HIDPI_IMAGES: String? = nil, COPY_PHASE_STRIP: String? = nil, DEBUG_INFORMATION_FORMAT: String? = nil, DEFINES_MODULE: String? = nil, DYLIB_INSTALL_NAME_BASE: String? = nil, EMBEDDED_CONTENT_CONTAINS_SWIFT: String? = nil, ENABLE_NS_ASSERTIONS: String? = nil, ENABLE_TESTABILITY: String? = nil, FRAMEWORK_SEARCH_PATHS: [String]? = nil, GCC_C_LANGUAGE_STANDARD: String? = nil, GCC_OPTIMIZATION_LEVEL: String? = nil, GCC_PREPROCESSOR_DEFINITIONS: [String]? = nil, HEADER_SEARCH_PATHS: [String]? = nil, INFOPLIST_FILE: String? = nil, LD_RUNPATH_SEARCH_PATHS: [String]? = nil, LIBRARY_SEARCH_PATHS: [String]? = nil, MACOSX_DEPLOYMENT_TARGET: String? = nil, MODULEMAP_FILE: String? = nil, ONLY_ACTIVE_ARCH: String? = nil, OTHER_CFLAGS: [String]? = nil, OTHER_LDFLAGS: [String]? = nil, OTHER_SWIFT_FLAGS: [String]? = nil, PRODUCT_BUNDLE_IDENTIFIER: String? = nil, PRODUCT_MODULE_NAME: String? = nil, PRODUCT_NAME: String? = nil, PROJECT_NAME: String? = nil, SDKROOT: String? = nil, SKIP_INSTALL: String? = nil, SUPPORTED_PLATFORMS: [String]? = nil, SWIFT_ACTIVE_COMPILATION_CONDITIONS: [String]? = nil, SWIFT_FORCE_STATIC_LINK_STDLIB: String? = nil, SWIFT_FORCE_DYNAMIC_LINK_STDLIB: String? = nil, SWIFT_OPTIMIZATION_LEVEL: String? = nil, SWIFT_VERSION: String? = nil, TARGET_NAME: String? = nil, USE_HEADERMAP: String? = nil, LD: String? = nil) {
+                self.CLANG_CXX_LANGUAGE_STANDARD = CLANG_CXX_LANGUAGE_STANDARD
+                self.CLANG_ENABLE_OBJC_ARC = CLANG_CXX_LANGUAGE_STANDARD
+                self.COMBINE_HIDPI_IMAGES = COMBINE_HIDPI_IMAGES
+                self.COPY_PHASE_STRIP = COPY_PHASE_STRIP
+                self.DEBUG_INFORMATION_FORMAT = DEBUG_INFORMATION_FORMAT
+                self.DEFINES_MODULE = DEFINES_MODULE
+                self.DYLIB_INSTALL_NAME_BASE = DYLIB_INSTALL_NAME_BASE
+                self.EMBEDDED_CONTENT_CONTAINS_SWIFT = EMBEDDED_CONTENT_CONTAINS_SWIFT
+                self.ENABLE_NS_ASSERTIONS = ENABLE_NS_ASSERTIONS
+                self.ENABLE_TESTABILITY = ENABLE_TESTABILITY
+                self.FRAMEWORK_SEARCH_PATHS = FRAMEWORK_SEARCH_PATHS
+                self.GCC_C_LANGUAGE_STANDARD = GCC_C_LANGUAGE_STANDARD
+                self.GCC_OPTIMIZATION_LEVEL = GCC_OPTIMIZATION_LEVEL
+                self.GCC_PREPROCESSOR_DEFINITIONS = GCC_PREPROCESSOR_DEFINITIONS
+                self.HEADER_SEARCH_PATHS = HEADER_SEARCH_PATHS
+                self.INFOPLIST_FILE = INFOPLIST_FILE
+                self.LD_RUNPATH_SEARCH_PATHS = LD_RUNPATH_SEARCH_PATHS
+                self.LIBRARY_SEARCH_PATHS = LIBRARY_SEARCH_PATHS
+                self.MACOSX_DEPLOYMENT_TARGET = MACOSX_DEPLOYMENT_TARGET
+                self.MODULEMAP_FILE = MODULEMAP_FILE
+                self.ONLY_ACTIVE_ARCH = ONLY_ACTIVE_ARCH
+                self.OTHER_CFLAGS = OTHER_CFLAGS
+                self.OTHER_LDFLAGS = OTHER_LDFLAGS
+                self.OTHER_SWIFT_FLAGS = OTHER_SWIFT_FLAGS
+                self.PRODUCT_BUNDLE_IDENTIFIER = PRODUCT_BUNDLE_IDENTIFIER
+                self.PRODUCT_MODULE_NAME = PRODUCT_MODULE_NAME
+                self.PRODUCT_NAME = PRODUCT_NAME
+                self.PROJECT_NAME = PROJECT_NAME
+                self.SDKROOT = SDKROOT
+                self.SKIP_INSTALL = SKIP_INSTALL
+                self.SUPPORTED_PLATFORMS = SUPPORTED_PLATFORMS
+                self.SWIFT_ACTIVE_COMPILATION_CONDITIONS = SWIFT_ACTIVE_COMPILATION_CONDITIONS
+                self.SWIFT_FORCE_STATIC_LINK_STDLIB = SWIFT_FORCE_STATIC_LINK_STDLIB
+                self.SWIFT_FORCE_DYNAMIC_LINK_STDLIB = SWIFT_FORCE_DYNAMIC_LINK_STDLIB
+                self.SWIFT_OPTIMIZATION_LEVEL = SWIFT_OPTIMIZATION_LEVEL
+                self.SWIFT_VERSION = SWIFT_VERSION
+                self.TARGET_NAME = TARGET_NAME
+                self.USE_HEADERMAP = USE_HEADERMAP
+                self.LD = LD
+            }
         }
     }
 }

Sources/Xcodeproj/pbxproj().swift

@@ -147,7 +147,7 @@ func xcodeProject(
     projectSettings.common.COMBINE_HIDPI_IMAGES = "YES"
 
     // Defined for regular `swift build` instantiations, so also should be defined here.
-    projectSettings.common.SWIFT_ACTIVE_COMPILATION_CONDITIONS = "SWIFT_PACKAGE"
+    projectSettings.common.SWIFT_ACTIVE_COMPILATION_CONDITIONS += ["SWIFT_PACKAGE"]
 
     // Opt out of headermaps.  The semantics of the build should be explicitly
     // defined by the project structure, so that we don't get any additional
@@ -162,8 +162,10 @@ func xcodeProject(
     projectSettings.debug.DEBUG_INFORMATION_FORMAT = "dwarf"
     projectSettings.debug.ENABLE_NS_ASSERTIONS = "YES"
     projectSettings.debug.GCC_OPTIMIZATION_LEVEL = "0"
+    projectSettings.debug.GCC_PREPROCESSOR_DEFINITIONS = ["DEBUG=1", "$(inherited)"]
     projectSettings.debug.ONLY_ACTIVE_ARCH = "YES"
     projectSettings.debug.SWIFT_OPTIMIZATION_LEVEL = "-Onone"
+    projectSettings.debug.SWIFT_ACTIVE_COMPILATION_CONDITIONS += ["DEBUG"]
 
     // Add some release-specific settings.
     projectSettings.release.COPY_PHASE_STRIP = "YES"
@@ -452,6 +454,7 @@ func xcodeProject(
         targetSettings.common.OTHER_CFLAGS = ["$(inherited)"]
         targetSettings.common.OTHER_LDFLAGS = ["$(inherited)"]
         targetSettings.common.OTHER_SWIFT_FLAGS = ["$(inherited)"]
+        targetSettings.common.SWIFT_ACTIVE_COMPILATION_CONDITIONS = ["$(inherited)"]
 
         // Set the correct SWIFT_VERSION for the Swift targets.
         if case let swiftTarget as SwiftTarget = target.underlyingTarget {

Tests/BuildTests/BuildPlanTests.swift

@@ -78,10 +78,10 @@ final class BuildPlanTests: XCTestCase {
         result.checkTargetsCount(2)
 
         let exe = try result.target(for: "exe").swiftTarget().compileArguments()
-        XCTAssertMatch(exe, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
+        XCTAssertMatch(exe, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-DDEBUG", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
 
         let lib = try result.target(for: "lib").swiftTarget().compileArguments()
-        XCTAssertMatch(lib, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
+        XCTAssertMatch(lib, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-DDEBUG", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
 
       #if os(macOS)
         let linkArguments = [
@@ -211,7 +211,7 @@ final class BuildPlanTests: XCTestCase {
         result.checkTargetsCount(3)
 
         let ext = try result.target(for: "extlib").clangTarget()
-        var args = ["-g", "-O0"]
+        var args = ["-g", "-O0", "-DSWIFT_PACKAGE=1", "-DDEBUG=1"]
       #if os(macOS)
         args += ["-fobjc-arc"]
       #endif
@@ -222,7 +222,7 @@ final class BuildPlanTests: XCTestCase {
         XCTAssertEqual(ext.moduleMap, AbsolutePath("/path/to/build/debug/extlib.build/module.modulemap"))
 
         let exe = try result.target(for: "exe").clangTarget()
-        args = ["-g", "-O0"]
+        args = ["-g", "-O0", "-DSWIFT_PACKAGE=1", "-DDEBUG=1"]
       #if os(macOS)
         args += ["-fobjc-arc"]
       #endif
@@ -324,7 +324,7 @@ final class BuildPlanTests: XCTestCase {
         result.checkTargetsCount(2)
 
         let lib = try result.target(for: "lib").clangTarget()
-        var args = ["-g", "-O0"]
+        var args = ["-g", "-O0", "-DSWIFT_PACKAGE=1", "-DDEBUG=1"]
       #if os(macOS)
         args += ["-fobjc-arc"]
       #endif
@@ -335,7 +335,7 @@ final class BuildPlanTests: XCTestCase {
         XCTAssertEqual(lib.moduleMap, AbsolutePath("/path/to/build/debug/lib.build/module.modulemap"))
 
         let exe = try result.target(for: "exe").swiftTarget().compileArguments()
-        XCTAssertMatch(exe, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-Xcc", "-fmodule-map-file=/path/to/build/debug/lib.build/module.modulemap", "-I", "/Pkg/Sources/lib/include", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
+        XCTAssertMatch(exe, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-DDEBUG","-Xcc", "-fmodule-map-file=/path/to/build/debug/lib.build/module.modulemap", "-I", "/Pkg/Sources/lib/include", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
 
       #if os(macOS)
         XCTAssertEqual(try result.buildProduct(for: "exe").linkArguments(), [
@@ -372,10 +372,10 @@ final class BuildPlanTests: XCTestCase {
       #endif
 
         let foo = try result.target(for: "Foo").swiftTarget().compileArguments()
-        XCTAssertMatch(foo, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
+        XCTAssertMatch(foo, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-DDEBUG", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
 
         let fooTests = try result.target(for: "FooTests").swiftTarget().compileArguments()
-        XCTAssertMatch(fooTests, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
+        XCTAssertMatch(fooTests, ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-DDEBUG", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
 
       #if os(macOS)
         XCTAssertEqual(try result.buildProduct(for: "PkgPackageTests").linkArguments(), [
@@ -413,7 +413,7 @@ final class BuildPlanTests: XCTestCase {
         result.checkProductsCount(1)
         result.checkTargetsCount(1)
 
-        XCTAssertMatch(try result.target(for: "exe").swiftTarget().compileArguments(), ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-Xcc", "-fmodule-map-file=/Clibgit/module.modulemap", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
+        XCTAssertMatch(try result.target(for: "exe").swiftTarget().compileArguments(), ["-swift-version", "3", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-DDEBUG", "-Xcc", "-fmodule-map-file=/Clibgit/module.modulemap", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
 
       #if os(macOS)
         XCTAssertEqual(try result.buildProduct(for: "exe").linkArguments(), [
@@ -552,10 +552,10 @@ final class BuildPlanTests: XCTestCase {
         result.checkTargetsCount(2)
 
         let exe = try result.target(for: "exe").swiftTarget().compileArguments()
-        XCTAssertMatch(exe, ["-swift-version", "4", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
+        XCTAssertMatch(exe, ["-swift-version", "4", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-DDEBUG", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
 
         let lib = try result.target(for: "lib").swiftTarget().compileArguments()
-        XCTAssertMatch(lib, ["-swift-version", "4", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
+        XCTAssertMatch(lib, ["-swift-version", "4", "-Onone", "-g", "-enable-testing", .equal(j), "-DSWIFT_PACKAGE", "-DDEBUG", "-module-cache-path", "/path/to/build/debug/ModuleCache", .anySequence])
 
         #if os(macOS)
             let linkArguments = [
@@ -605,18 +605,18 @@ final class BuildPlanTests: XCTestCase {
 
         let exe = try result.target(for: "exe").clangTarget()
     #if os(macOS)
-        XCTAssertEqual(exe.basicArguments(), ["-g", "-O0", "-fobjc-arc","-fblocks",  "-fmodules", "-fmodule-name=exe", "-I", "/Pkg/Sources/exe/include", "-fmodules-cache-path=/path/to/build/debug/ModuleCache"])
+        XCTAssertEqual(exe.basicArguments(), ["-g", "-O0", "-DSWIFT_PACKAGE=1", "-DDEBUG=1", "-fobjc-arc","-fblocks",  "-fmodules", "-fmodule-name=exe", "-I", "/Pkg/Sources/exe/include", "-fmodules-cache-path=/path/to/build/debug/ModuleCache"])
     #else
-        XCTAssertEqual(exe.basicArguments(), ["-g", "-O0","-fblocks",  "-fmodules", "-fmodule-name=exe", "-I", "/Pkg/Sources/exe/include", "-fmodules-cache-path=/path/to/build/debug/ModuleCache"])
+        XCTAssertEqual(exe.basicArguments(), ["-g", "-O0", "-DSWIFT_PACKAGE=1", "-DDEBUG=1", "-fblocks",  "-fmodules", "-fmodule-name=exe", "-I", "/Pkg/Sources/exe/include", "-fmodules-cache-path=/path/to/build/debug/ModuleCache"])
     #endif
         XCTAssertEqual(exe.objects, [AbsolutePath("/path/to/build/debug/exe.build/main.c.o")])
         XCTAssertEqual(exe.moduleMap, nil)
 
         let lib = try result.target(for: "lib").clangTarget()
     #if os(macOS)
-        XCTAssertEqual(lib.basicArguments(), ["-g", "-O0", "-fobjc-arc","-fblocks",  "-fmodules", "-fmodule-name=lib", "-I", "/Pkg/Sources/lib/include", "-fmodules-cache-path=/path/to/build/debug/ModuleCache"])
+        XCTAssertEqual(lib.basicArguments(), ["-g", "-O0", "-DSWIFT_PACKAGE=1", "-DDEBUG=1", "-fobjc-arc","-fblocks",  "-fmodules", "-fmodule-name=lib", "-I", "/Pkg/Sources/lib/include", "-fmodules-cache-path=/path/to/build/debug/ModuleCache"])
     #else
-        XCTAssertEqual(lib.basicArguments(), ["-g", "-O0","-fblocks",  "-fmodules", "-fmodule-name=lib", "-I", "/Pkg/Sources/lib/include", "-fmodules-cache-path=/path/to/build/debug/ModuleCache"])
+        XCTAssertEqual(lib.basicArguments(), ["-g", "-O0", "-DSWIFT_PACKAGE=1", "-DDEBUG=1", "-fblocks",  "-fmodules", "-fmodule-name=lib", "-I", "/Pkg/Sources/lib/include", "-fmodules-cache-path=/path/to/build/debug/ModuleCache"])
     #endif
         XCTAssertEqual(lib.objects, [AbsolutePath("/path/to/build/debug/lib.build/lib.cpp.o")])
         XCTAssertEqual(lib.moduleMap, AbsolutePath("/path/to/build/debug/lib.build/module.modulemap"))

Tests/XcodeprojTests/XcodeProjectModelSerializationTests.swift

@@ -86,6 +86,9 @@ class XcodeProjectModelSerializationTests: XCTestCase {
         let otherSwiftFlagValues = ["$(inherited)", "-DXcode"]
         buildSettings.OTHER_SWIFT_FLAGS = otherSwiftFlagValues
 
+        let activeCompilationConditionsValues = ["$(inherited)", "DEBUG"]
+        buildSettings.SWIFT_ACTIVE_COMPILATION_CONDITIONS = activeCompilationConditionsValues
+
         // Serialize it to a property list.
         let plist = buildSettings.asPropertyList()
 
@@ -97,9 +100,10 @@ class XcodeProjectModelSerializationTests: XCTestCase {
 
         guard
             let productNamePlist = buildSettingsDict["PRODUCT_NAME"],
-            let otherSwiftFlagsPlist = buildSettingsDict["OTHER_SWIFT_FLAGS"]
+            let otherSwiftFlagsPlist = buildSettingsDict["OTHER_SWIFT_FLAGS"],
+            let activeCompilationConditionsPlist = buildSettingsDict["SWIFT_ACTIVE_COMPILATION_CONDITIONS"]
         else {
-            XCTFail("build settings plist must contain PRODUCT_NAME and OTHER_SWIFT_FLAGS")
+            XCTFail("build settings plist must contain PRODUCT_NAME and OTHER_SWIFT_FLAGS and SWIFT_ACTIVE_COMPILATION_CONDITIONS")
             return
         }
 
@@ -113,7 +117,7 @@ class XcodeProjectModelSerializationTests: XCTestCase {
             XCTFail("otherSwiftFlags plist must be an array")
             return
         }
-        
+
         let otherSwiftFlags = otherSwiftFlagsPlists.compactMap { flagPlist -> String? in
             guard case let .string(flag) = flagPlist else {
                 XCTFail("otherSwiftFlag plist must be string")
@@ -122,6 +126,20 @@ class XcodeProjectModelSerializationTests: XCTestCase {
             return flag
         }
         XCTAssertEqual(otherSwiftFlags, otherSwiftFlagValues)
+
+        guard case let .array(activeCompilationConditionsPlists) = activeCompilationConditionsPlist else {
+            XCTFail("activeCompilationConditionsPlist plist must be an array")
+            return
+        }
+
+        let activeCompilationConditions = activeCompilationConditionsPlists.compactMap { flagPlist -> String? in
+            guard case let .string(flag) = flagPlist else {
+                XCTFail("activeCompilationConditions plist must be a string")
+                return nil
+            }
+            return flag
+        }
+        XCTAssertEqual(activeCompilationConditions, activeCompilationConditionsValues)
     }
 
     static var allTests = [