fix address leaks in tests. (#61)

* fix leaks in tests.

* Disable leak detection for linux

Author: kylebrowning

.github/workflows/swift.yml

@@ -37,10 +37,10 @@ jobs:
     steps:
     - uses: actions/checkout@master
     - run: swift test --sanitize=thread
-  # address:
-  #   container:
-  #     image: vapor/swift:5.1-bionic
-  #   runs-on: ubuntu-latest
-  #   steps:
-  #   - uses: actions/checkout@master
-  #   - run: swift test --sanitize=address
+  address:
+    container:
+      image: vapor/swift:5.1-bionic
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+    - run: ASAN_OPTIONS=detect_leaks=0 swift test --sanitize=address

Tests/APNSwiftTests/APNSwiftRequestTests.swift

@@ -222,6 +222,7 @@ final class APNSwiftRequestTests: XCTestCase {
                 XCTFail("response should not success")
             }
         }
+        XCTAssertNoThrow(XCTAssertTrue(try channel.finish().isClean))
     }
 
     func testTokenProviderUpdate() {
@@ -261,6 +262,7 @@ final class APNSwiftRequestTests: XCTestCase {
         loop.advanceTime(by: .minutes(55))
         // Should have changed
         XCTAssertFalse(newCachedToken == bearerToken.currentBearerToken)
+        bearerToken.cancel()
 
     }
     static var allTests = [