Fix test failures

Author: ahoppen

Sources/CompletionScoring/Utilities/SwiftExtensions.swift

@@ -12,6 +12,18 @@
 
 import Foundation
 
+#if canImport(Darwin)
+import Darwin
+#elseif canImport(Glibc)
+import Glibc
+#elseif canImport(Musl)
+import Musl
+#elseif canImport(CRT)
+import CRT
+#elseif canImport(Bionic)
+import Bionic
+#endif
+
 extension Range where Bound: Numeric {
   init(from: Bound, length: Bound) {
     self = from..<(from + length)

Sources/ToolchainRegistry/Toolchain.swift

@@ -347,7 +347,7 @@ func containingXCToolchain(
   var path = path
   while !path.isRoot {
     if path.pathExtension == "xctoolchain" {
-      if let infoPlist = orLog("", { try XCToolchainPlist(fromDirectory: path) }) {
+      if let infoPlist = orLog("Loading information from xctoolchain", { try XCToolchainPlist(fromDirectory: path) }) {
         return (infoPlist, path)
       }
       return nil

Utilities/build-script-helper.py

@@ -216,6 +216,11 @@ def run_tests(swift_exec: str, args: argparse.Namespace) -> None:
     print('Cleaning ' + tests)
     shutil.rmtree(tests, ignore_errors=True)
 
+    # Build the plugin so it can be used by the tests. SwiftPM is not able to express a dependency from a test target on
+    # a product.
+    build_single_product('SwiftSourceKitPlugin', swift_exec, args)
+    build_single_product('SwiftSourceKitClientPlugin', swift_exec, args)
+
     cmd = [
         swift_exec, 'test',
         '--disable-testable-imports',
@@ -265,6 +270,8 @@ def handle_invocation(swift_exec: str, args: argparse.Namespace) -> None:
 
     if args.action == 'build':
         build_single_product("sourcekit-lsp", swift_exec, args)
+        build_single_product('SwiftSourceKitPlugin', swift_exec, args)
+        build_single_product('SwiftSourceKitClientPlugin', swift_exec, args)
     elif args.action == 'test':
         run_tests(swift_exec, args)
     elif args.action == 'install':