CBL-8744 : Add binary test targets for the Swift test suites

[pasin]

Restructure Swift tests for running the tests against a pre-built CouchbaseLiteSwift binary instead of a build from the working tree, following the same design as the Objective-C binary test targets.

• Add CBL_EE_Swift_Binary_Tests and CBL_Swift_Binary_Tests, which compile and link against frameworks staged in BinaryTests/Frameworks. Each runs on macOS and iOS. The community target leaves out the tests for Enterprise edition.

• Remove @testable imports from the test files. Most were unused. The files that keep white box tests import the module conditionally, as a binary framework has no testability, and guard those tests with #if !CBL_BINARY_TEST.

• Keep MultipeerReplicatorTest internal only, as its identity setup requires the internal issuer API.

• Replace the internal keychain test API in the listener tests with public SecItem based cleanup helpers, and derive the anonymous identity common name at runtime in the same way as the Objective-C tests. The internal API is deleted in the EE repo.

• Align the keychain item count helper between the Objective-C and Swift tests. Both take the item class and the discovered common name as arguments.

• Delete testJSONRepresentation which access internal API and is not useful.

• Add testCleanUpAnonymousIdentities to verify that the cleanup leaves no anonymous identities nor certificates in the keychain.

• Convert the keychain guard early returns to XCTSkipUnless so that runs without keychain access report skips instead of passing vacuously.

• Set CBL_BINARY_TEST in the targets' xcconfigs via SWIFT_ACTIVE_COMPILATION_CONDITIONS and GCC_PREPROCESSOR_DEFINITIONS.

• Rename the shared iOS host application target to CBL_Binary_Tests_iOS_App, as it now hosts the binary tests of both languages.

• Add a scheme per edition and platform, following the Objective-C binary test schemes.

• Companion PR : https://github.com/couchbaselabs/couchbase-lite-ios-ee/pull/354

[Copilot]

Pull request overview

This PR adds Swift “binary test” targets/schemes so the Swift test suites can run against pre-staged CouchbaseLiteSwift (and related) xcframeworks, mirroring the existing Objective-C binary test approach. As part of that, it hardens Swift tests to be black-box compatible (no @testable, no internal-only APIs) and reworks keychain cleanup in listener tests to avoid relying on internal APIs.

Changes:

• Introduces CE/EE Swift binary test targets and schemes, wired to staged frameworks and CBL_BINARY_TEST compile conditions.
• Updates Swift tests to remove @testable imports and conditionally compile white-box assertions out of binary test runs.
• Replaces internal keychain cleanup APIs in Swift listener tests with SecItem-based helpers and adds coverage for anonymous identity cleanup.

Reviewed changes

Copilot reviewed 33 out of 34 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
xcconfigs/CBL_Swift_Binary_Tests.xcconfig	Adds build settings for Swift binary test bundle (defines CBL_BINARY_TEST, disables headermap, runpath, bridging header).
xcconfigs/CBL_EE_Swift_Binary_Tests.xcconfig	EE wrapper config including EE common + Swift binary test settings.
xcconfigs/CBL_Binary_Tests_iOS_App.xcconfig	Renames/aligns the shared iOS host app xcconfig for binary tests.
Swift/Tests/VectorSearchTest+Lazy.swift	Drops @testable import for binary compatibility.
Swift/Tests/VectorSearchTest.swift	Drops @testable import for binary compatibility.
Swift/Tests/URLEndpointListenerTest+Collection.swift	Switches keychain guard early-returns to XCTSkipUnless and removes @testable.
Swift/Tests/URLEndpointListenerTest.swift	Reworks keychain cleanup to use SecItem* queries; adds cleanup test; removes @testable.
Swift/Tests/UnnestArrayTest.swift	Guards internal-only assertions with #if !CBL_BINARY_TEST and conditionally uses @testable.
Swift/Tests/TLSIdentityTest.swift	Guards internal-only section behind #if !CBL_BINARY_TEST and conditionally uses @testable.
Swift/Tests/ReplicatorTest+PendingDocIds.swift	Drops @testable import for binary compatibility.
Swift/Tests/ReplicatorTest+CustomConflict.swift	Drops @testable import for binary compatibility.
Swift/Tests/ReplicatorTest+Collection.swift	Drops @testable import for binary compatibility.
Swift/Tests/QueryTest+Collection.swift	Drops @testable import for binary compatibility.
Swift/Tests/QueryTest.swift	Drops @testable import and removes the internal-API JSON-representation test.
Swift/Tests/PublisherTest.swift	Drops @testable import for binary compatibility.
Swift/Tests/PartialIndexTest.swift	Drops @testable import for binary compatibility.
Swift/Tests/MultipeerReplicatorTest.swift	Explicitly errors under CBL_BINARY_TEST to keep internal-only test out of binary targets.
Swift/Tests/LogSinkTest.swift	Drops @testable import for binary compatibility.
Swift/Tests/DatabaseTest.swift	Drops @testable import for binary compatibility.
Swift/Tests/CollectionTest.swift	Drops @testable import for binary compatibility.
Swift/Tests/CBLTestHelper.m	Makes LiteCore exception-expectation helper a no-op for binary tests; refactors macros.
Swift/Tests/CBLTestHelper.h	Removes direct exposure of LiteCore exception counter from header.
Swift/Tests/CBLTestCase.swift	Drops @testable import for binary compatibility.
Swift/Query.swift	Removes internal JSON encode/decode helpers from Query.
Swift/ModuleMap/Generated/CouchbaseLiteSwift-EE.private.modulemap	Removes CBLURLEndpointListener+Swift.h from generated private module map.
Swift/ModuleMap/CouchbaseLiteSwift-EE.private.txt	Removes CBLURLEndpointListener+Swift.h from the private header list template.
Objective-C/Tests/URLEndpointListenerTest+Main.m	Aligns keychain item counting helper signature with Swift/updated logic.
CouchbaseLite.xcodeproj/xcshareddata/xcschemes/CBL_Swift_Binary_Tests.xcscheme	Adds macOS Swift CE binary test scheme.
CouchbaseLite.xcodeproj/xcshareddata/xcschemes/CBL_Swift_Binary_Tests_iOS_App.xcscheme	Adds iOS app-hosted Swift CE binary test scheme.
CouchbaseLite.xcodeproj/xcshareddata/xcschemes/CBL_ObjC_Binary_Tests_iOS_App.xcscheme	Updates Obj-C iOS binary test scheme to use renamed host app target.
CouchbaseLite.xcodeproj/xcshareddata/xcschemes/CBL_EE_Swift_Binary_Tests.xcscheme	Adds macOS Swift EE binary test scheme.
CouchbaseLite.xcodeproj/xcshareddata/xcschemes/CBL_EE_Swift_Binary_Tests_iOS_App.xcscheme	Adds iOS app-hosted Swift EE binary test scheme.
CouchbaseLite.xcodeproj/xcshareddata/xcschemes/CBL_EE_ObjC_Binary_Tests_iOS_App.xcscheme	Updates EE Obj-C iOS binary test scheme to use renamed host app target.
CouchbaseLite.xcodeproj/project.pbxproj	Adds Swift binary test targets, embeds staged frameworks, renames host app target, and wires build phases/schemes.

Suppressed comments (2)

Swift/Tests/URLEndpointListenerTest.swift:146

• After querying certificates, the code asserts success but then force-casts result to [SecCertificate] even when the query fails. This can crash instead of failing the test with the assertion message.

        XCTAssertEqual(status, errSecSuccess, "Cannot query certificates (OSStatus = \(status))")
        let certs = result as! [SecCertificate]
        for cert in certs {

Swift/Tests/URLEndpointListenerTest.swift:559

• keychainItemCount asserts SecItemCopyMatching succeeded but still force-casts result and iterates it even when status != errSecSuccess. Since XCTest assertions don't abort, this can crash and obscure the real keychain error.

        let status = SecItemCopyMatching(query as CFDictionary, &result)
        if status == errSecItemNotFound { return 0 }
        XCTAssertEqual(status, errSecSuccess, "Cannot query keychain items (OSStatus = \(status))")

        var count = 0

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[pasin]

The PR validation from Jenkins is actually passed (See here). I do not know why it's waiting for the result and the link was pointing to localhost as well.