[WASM] Avoid Foundation.Thread and Dispatch

Author: ikesyo

Sources/Nimble/Adapters/NMBExpectation.swift

@@ -1,3 +1,5 @@
+#if !os(WASI)
+
 #if canImport(Darwin) && !SWIFT_PACKAGE
 import class Foundation.NSObject
 import typealias Foundation.TimeInterval
@@ -150,3 +152,5 @@ public class NMBExpectation: NSObject {
 }
 
 #endif
+
+#endif // #if !os(WASI)

Sources/Nimble/Adapters/NimbleEnvironment.swift

@@ -1,10 +1,15 @@
+#if !os(WASI)
 import Dispatch
-import class Foundation.NSObject
 import class Foundation.Thread
+#endif
+import class Foundation.NSObject
 
 /// "Global" state of Nimble is stored here. Only DSL functions should access / be aware of this
 /// class' existence
 internal class NimbleEnvironment: NSObject {
+    #if os(WASI)
+    static var activeInstance: NimbleEnvironment = NimbleEnvironment()
+    #else
     static var activeInstance: NimbleEnvironment {
         get {
             let env = Thread.current.threadDictionary["NimbleEnvironment"]
@@ -20,6 +25,7 @@ internal class NimbleEnvironment: NSObject {
             Thread.current.threadDictionary["NimbleEnvironment"] = newValue
         }
     }
+    #endif
 
     // swiftlint:disable:next todo
     // TODO: eventually migrate the global to this environment value
@@ -29,15 +35,19 @@ internal class NimbleEnvironment: NSObject {
     }
 
     var suppressTVOSAssertionWarning: Bool = false
+    #if !os(WASI)
     var awaiter: Awaiter
+    #endif
 
     override init() {
+        #if !os(WASI)
         let timeoutQueue = DispatchQueue.global(qos: .userInitiated)
         awaiter = Awaiter(
             waitLock: AssertionWaitLock(),
             asyncQueue: .main,
             timeoutQueue: timeoutQueue
         )
+        #endif
 
         super.init()
     }

Sources/Nimble/DSL+Wait.swift

@@ -1,3 +1,5 @@
+#if !os(WASI)
+
 import Dispatch
 import Foundation
 
@@ -117,3 +119,5 @@ internal func blockedRunLoopErrorMessageFor(_ fnName: String, leeway: DispatchTi
 public func waitUntil(timeout: DispatchTimeInterval = AsyncDefaults.timeout, file: FileString = #file, line: UInt = #line, action: @escaping (@escaping () -> Void) -> Void) {
     NMBWait.until(timeout: timeout, file: file, line: line, action: action)
 }
+
+#endif // #if !os(WASI)

Sources/Nimble/Matchers/Async.swift

@@ -1,3 +1,5 @@
+#if !os(WASI)
+
 import Foundation
 import Dispatch
 
@@ -180,3 +182,5 @@ extension Expectation {
         return toNever(predicate, until: until, pollInterval: pollInterval, description: description)
     }
 }
+
+#endif // #if !os(WASI)

Sources/Nimble/Matchers/PostNotification.swift

@@ -1,3 +1,5 @@
+#if !os(WASI)
+
 #if canImport(Foundation)
 import Foundation
 
@@ -97,4 +99,6 @@ public func postDistributedNotifications<Out>(
 }
 #endif
 
-#endif
+#endif // #if canImport(Foundation)
+
+#endif // #if !os(WASI)

Sources/Nimble/Utils/Await.swift

@@ -1,3 +1,5 @@
+#if !os(WASI)
+
 import CoreFoundation
 import Dispatch
 import Foundation
@@ -369,3 +371,5 @@ internal func pollBlock(
 
         return result
 }
+
+#endif // #if !os(WASI)

Sources/Nimble/Utils/DispatchTimeInterval.swift

@@ -1,3 +1,5 @@
+#if !os(WASI)
+
 import Dispatch
 
 #if canImport(CDispatch)
@@ -39,3 +41,5 @@ extension TimeInterval {
     }
 }
 #endif
+
+#endif // #if !os(WASI)

Tests/NimbleTests/AsynchronousTest.swift

@@ -1,3 +1,5 @@
+#if !os(WASI)
+
 import Dispatch
 import CoreFoundation
 import Foundation
@@ -283,3 +285,5 @@ final class AsyncTest: XCTestCase {
         }
     }
 }
+
+#endif // #if !os(WASI)

Tests/NimbleTests/Helpers/utils.swift

@@ -1,4 +1,6 @@
+#if !os(WASI)
 import Dispatch
+#endif
 import Foundation
 @testable import Nimble
 import XCTest
@@ -64,12 +66,14 @@ func failsWithErrorMessageForNil(_ message: String, file: FileString = #file, li
     failsWithErrorMessage("\(message) (use beNil() to match nils)", file: file, line: line, preferOriginalSourceLocation: preferOriginalSourceLocation, closure: closure)
 }
 
+#if !os(WASI)
 func deferToMainQueue(action: @escaping () -> Void) {
     DispatchQueue.main.async {
         Thread.sleep(forTimeInterval: 0.01)
         action()
     }
 }
+#endif
 
 #if canImport(Darwin) && !SWIFT_PACKAGE
 public class NimbleHelper: NSObject {

Tests/NimbleTests/Matchers/PostNotificationTest.swift

@@ -1,3 +1,5 @@
+#if !os(WASI)
+
 import XCTest
 import Nimble
 import Foundation
@@ -79,3 +81,5 @@ final class PostNotificationTest: XCTestCase {
     }
     #endif
 }
+
+#endif // #if !os(WASI)