Android support (#1352)

Author: marcprux

.github/workflows/ci.yml

@@ -95,3 +95,8 @@ jobs:
         action: test
         enable-code-coverage: true
     - uses: codecov/codecov-action@v1
+  test-android:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: skiptools/swift-android-action@v2

Tests/A+/XCTestManifests.swift

@@ -1,6 +1,14 @@
 #if !canImport(ObjectiveC)
 import XCTest
 
+#if os(Linux) || os(Android)
+extension XCTestExpectation {
+    func fulfill() {
+        fulfill(#file, line: #line)
+    }
+}
+#endif
+
 extension Test212 {
     // DO NOT MODIFY: This is autogenerated, use:
     //   `swift test --generate-linuxmain`

Tests/CorePromise/LoggingTests.swift

@@ -1,6 +1,9 @@
 @testable import PromiseKit
 import Dispatch
 import XCTest
+#if canImport(Android)
+import Android
+#endif
 
 class LoggingTests: XCTestCase {
     /**

Tests/CorePromise/Utilities.swift

@@ -4,7 +4,7 @@ extension Promise {
     func silenceWarning() {}
 }
 
-#if os(Linux)
+#if os(Linux) || os(Android)
 import func CoreFoundation._CFIsMainThread
 
 extension Thread {