add Application.background() for running a full blown, live app in th…

…e background during a test

AlchemyTest/Utilities/Application+Utilities.swift

@@ -0,0 +1,13 @@
+import Alchemy
+
+extension Application {
+    /// Starts the application in a background task.
+    public func background(_ args: String...) {
+        background(args)
+    }
+
+    /// Starts the application in a background task.
+    public func background(_ args: [String]) {
+        Task { try await run(args) }
+    }
+}

Tests/HTTP/Commands/ServeCommandTests.swift

@@ -11,7 +11,7 @@ final class ServeCommandTests: TestCase<TestApp> {
 
     func testServe() async throws {
         app.get("/foo", use: { _ in "hello" })
-        Task { try await app.run("--port", "3000") }
+        app.background("--port", "3000")
         try await Http.get("http://127.0.0.1:3000/foo")
             .assertBody("hello")
 
@@ -21,7 +21,7 @@ final class ServeCommandTests: TestCase<TestApp> {
 
     func testServeWithSideEffects() async throws {
         app.get("/foo", use: { _ in "hello" })
-        Task { try await app.run("--workers", "2", "--schedule", "--migrate") }
+        app.background("--workers", "2", "--schedule", "--migrate")
         try await Http.get("http://127.0.0.1:3000/foo")
             .assertBody("hello")
 

Tests/Queues/Commands/WorkCommandTests.swift

@@ -9,7 +9,7 @@ final class WorkCommandTests: TestCase<TestApp> {
     }
 
     func testRun() async throws {
-        Task { try await app.run("queue:work", "--workers", "5") }
+        app.background("queue:work", "--workers", "5")
 
         // wait for services to boot up
         try await Task.sleep(for: .milliseconds(10))
@@ -20,7 +20,7 @@ final class WorkCommandTests: TestCase<TestApp> {
 
     func testRunName() async throws {
         Queue.fake("a")
-        Task { try await app.run("queue:work", "--name", "a", "--workers", "5") }
+        app.background("queue:work", "--name", "a", "--workers", "5")
 
         // wait for services to boot up
         try await Task.sleep(for: .milliseconds(10))
@@ -31,7 +31,7 @@ final class WorkCommandTests: TestCase<TestApp> {
     }
 
     func testRunCLI() async throws {
-        Task { try await app.run("queue:work", "--workers", "3", "--schedule") }
+        app.background("queue:work", "--workers", "3", "--schedule")
 
         // wait for services to boot up
         try await Task.sleep(for: .milliseconds(10))

Tests/Routing/RouterTests.swift

@@ -177,7 +177,7 @@ final class RouterTests: TestCase<TestApp> {
             }
         }
 
-        Task { try await app.run() }
+        app.background()
 
         var expected = ["foo", "bar", "baz"]
         try await Http