Tests: remove @testable import PackageGraph

Use the newly extended APIs for testing and use a non-testable import of
the package, avoiding a recompilation.

Author: compnerd

Tests/BuildTests/BuildPlanTests.swift

@@ -18,7 +18,7 @@
 import DriverSupport
 
 @_spi(DontAdoptOutsideOfSwiftPMExposedForBenchmarksAndTestsOnly)
-@testable import PackageGraph
+import PackageGraph
 
 import PackageLoading
 

Tests/BuildTests/ModuleAliasingBuildTests.swift

@@ -14,7 +14,7 @@ import Basics
 @testable import Build
 
 @_spi(DontAdoptOutsideOfSwiftPMExposedForBenchmarksAndTestsOnly)
-@testable import PackageGraph
+import PackageGraph
 
 import PackageLoading
 @testable import PackageModel

Tests/BuildTests/PluginInvocationTests.swift

@@ -14,7 +14,7 @@
 import Basics
 
 @_spi(DontAdoptOutsideOfSwiftPMExposedForBenchmarksAndTestsOnly)
-@testable import PackageGraph
+import PackageGraph
 
 import PackageLoading
 

Tests/BuildTests/ProductBuildDescriptionTests.swift

@@ -19,7 +19,6 @@ import class Basics.ObservabilitySystem
 import class PackageModel.Manifest
 import struct PackageModel.TargetDescription
 
-@testable
 import struct PackageGraph.ResolvedProduct
 
 @_spi(DontAdoptOutsideOfSwiftPMExposedForBenchmarksAndTestsOnly)

Tests/FunctionalTests/PluginTests.swift

@@ -14,7 +14,7 @@ import Basics
 import _Concurrency
 
 @_spi(SwiftPMInternal)
-@testable import PackageGraph
+import PackageGraph
 import PackageLoading
 import PackageModel
 @testable import SPMBuildCore

Tests/PackageGraphTests/CrossCompilationPackageGraphTests.swift

@@ -14,7 +14,6 @@
 @_spi(SwiftPMInternal)
 import _InternalTestSupport
 
-@testable
 import PackageGraph
 
 import PackageModel

Tests/PackageGraphTests/ModulesGraphTests.swift

@@ -15,7 +15,7 @@ import PackageLoading
 import TSCUtility
 
 @_spi(DontAdoptOutsideOfSwiftPMExposedForBenchmarksAndTestsOnly)
-@testable import PackageGraph
+import PackageGraph
 
 import _InternalTestSupport
 import PackageModel

Tests/PackageGraphTests/PubGrubTests.swift

@@ -13,7 +13,7 @@
 import Basics
 import _Concurrency
 import OrderedCollections
-@testable import PackageGraph
+import PackageGraph
 import PackageLoading
 @testable import PackageModel
 import SourceControl

Tests/PackageGraphTests/TopologicalSortTests.swift

@@ -11,7 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 
-@testable import PackageGraph
+import PackageGraph
 import XCTest
 
 private func XCTAssertThrows<T: Swift.Error>(

Tests/WorkspaceTests/WorkspaceTests.swift

@@ -13,7 +13,7 @@
 import _InternalTestSupport
 import Basics
 import PackageFingerprint
-@testable import PackageGraph
+import PackageGraph
 import PackageLoading
 import PackageModel
 import PackageRegistry