- Move ImmediateScheduler to its own file

- Attempt to fix Linux CI

Author: mluisbrown

.github/workflows/ci.yml

@@ -38,21 +38,14 @@ jobs:
 
   swiftpm-linux:
     name: SwiftPM Linux
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
     steps:
       - name: Install Swift
         run: |
           eval "$(curl -sL https://swiftenv.fuller.li/install.sh)"
       - name: Checkout
         uses: actions/checkout@v2
-      - name: Recover cached dependencies
-        uses: actions/cache@v1
-        id: dependency-cache
-        with:
-          path: .build
-          key: swiftpm-linux-${{ hashFiles('Package.resolved') }}
       - name: Pull dependencies
-        if: steps.dependency-cache.outputs.cache-hit != 'true'
         run: |
           swift package resolve
       - name: Test via SwiftPM

Sources/ComposableArchitecture/TestSupport/ImmediateScheduler.swift

@@ -0,0 +1,19 @@
+import Foundation
+import ReactiveSwift
+
+/// Make `ImmediateScheduler` confirm to `DateScheduler`
+/// so that it can be used for testing whenever a `DateScheduler`
+/// is expected.
+extension ImmediateScheduler: DateScheduler {
+  public var currentDate: Date {
+    Date(timeIntervalSince1970: 0)
+  }
+
+  public func schedule(after date: Date, action: @escaping () -> Void) -> Disposable? {
+    schedule(action)
+  }
+
+  public func schedule(after date: Date, interval: DispatchTimeInterval, leeway: DispatchTimeInterval, action: @escaping () -> Void) -> Disposable? {
+    schedule(action)
+  }
+}

Sources/ComposableArchitecture/TestSupport/TestStore.swift

@@ -658,17 +658,3 @@
   }
 
 #endif
-
-extension ImmediateScheduler: DateScheduler {
-    public var currentDate: Date {
-        Date(timeIntervalSince1970: 0)
-    }
-
-    public func schedule(after date: Date, action: @escaping () -> Void) -> Disposable? {
-        schedule(action)
-    }
-
-    public func schedule(after date: Date, interval: DispatchTimeInterval, leeway: DispatchTimeInterval, action: @escaping () -> Void) -> Disposable? {
-        schedule(action)
-    }
-}