Tests: remove @testable import PackagingSigning

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

Author: compnerd

Tests/PackageRegistryTests/PackageSigningEntityTOFUTests.swift

@@ -15,7 +15,7 @@ import Foundation
 import Basics
 import PackageModel
 @testable import PackageRegistry
-@testable import PackageSigning
+import PackageSigning
 import _InternalTestSupport
 import XCTest
 

Tests/PackageSigningTests/FilePackageSigningEntityStorageTests.swift

@@ -14,7 +14,7 @@ import Foundation
 
 import Basics
 import PackageModel
-@testable import PackageSigning
+import PackageSigning
 import _InternalTestSupport
 import Testing
 

Tests/PackageSigningTests/SigningEntityTests.swift

@@ -14,7 +14,7 @@ import Testing
 import XCTest
 
 import Basics
-@testable import PackageSigning
+import PackageSigning
 import _InternalTestSupport
 import X509
 

Tests/PackageSigningTests/SigningIdentityTests.swift

@@ -17,7 +17,7 @@ import XCTest
 import _CryptoExtras // For RSA
 import Basics
 import Crypto
-@testable import PackageSigning
+import PackageSigning
 import _InternalTestSupport
 import X509
 

Tests/PackageSigningTests/SigningTests.swift

@@ -14,7 +14,7 @@ import _CryptoExtras // for RSA
 import Basics
 import Crypto
 import Foundation
-@testable import PackageSigning
+import PackageSigning
 import _InternalTestSupport
 import SwiftASN1
 @testable import X509 // need internal APIs for OCSP testing