Remove AppTestCase and move pieces into individual files

Author: finestructure

Tests/AppTests/ApiTests.swift

@@ -18,7 +18,7 @@ import Dependencies
 import PackageCollectionsSigning
 import SnapshotTesting
 import Testing
-import Vapor
+import XCTVapor
 
 
 @Suite struct ApiTests {

Tests/AppTests/AppTestCase.swift

@@ -0,0 +1,57 @@
+// Copyright Dave Verwer, Sven A. Schmidt, and other contributors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import Foundation
+
+@testable import App
+
+import Fluent
+import SQLKit
+
+
+// FIXME: Check if we can just create a PostgresDB object from scratch rather than using withApp and app.db for this at the call site (i.e. check if these need to be extensions on Database). That does a whole migration + reset just to render the SQL needlessly.
+extension Database {
+    func renderSQL(_ builder: SQLSelectBuilder) -> String {
+        renderSQL(builder.query)
+    }
+
+    func renderSQL(_ query: SQLExpression) -> String {
+        var serializer = SQLSerializer(database: self as! SQLDatabase)
+        query.serialize(to: &serializer)
+        return serializer.sql
+    }
+
+    func binds(_ builder: SQLSelectBuilder?) -> [String] {
+        binds(builder?.query)
+    }
+
+    func binds(_ query: SQLExpression?) -> [String] {
+        var serializer = SQLSerializer(database: self as! SQLDatabase)
+        query?.serialize(to: &serializer)
+        return serializer.binds.reduce(into: []) { result, bind in
+            switch bind {
+                case let bind as Date:
+                    result.append(DateFormatter.filterParseFormatter.string(from: bind))
+                case let bind as Set<Package.PlatformCompatibility>:
+                    let s = bind.map(\.rawValue).sorted().joined(separator: ",")
+                    result.append("{\(s)}")
+                case let bind as Set<ProductTypeSearchFilter.ProductType>:
+                    let s = bind.map(\.rawValue).sorted().joined(separator: ",")
+                    result.append("{\(s)}")
+                default:
+                    result.append("\(bind)")
+            }
+        }
+    }
+}