Configure and write basic tests

Tests/LinuxMain.swift

@@ -0,0 +1,6 @@
+import XCTest
+@testable import VaporXFPMiddlewareTests
+
+XCTMain([
+    testCase(VaporXFPMiddlewareTests.allTests)
+])

Tests/XFPMiddlewareTests/XFPMiddlewareTests.swift

@@ -0,0 +1,41 @@
+import XCTest
+import Vapor
+import HTTP
+import XFPMiddleware
+import Testing
+
+class XFPMiddlewareTests: XCTestCase {
+    static var allTests = [
+        ("testXFPMiddleware", testXFPMiddleware)
+    ]
+
+    override func setUp() {
+        Testing.onFail = XCTFail
+    }
+
+    func testXFPMiddleware() throws {
+        let drop = try Droplet()
+
+        let protected = drop.grouped(XFPMiddleware.init())
+
+        protected.get { req in
+            return Response(status: .ok)
+        }
+
+        let httpReq = Request(method: .get, uri: "/")
+        httpReq.uri.scheme = "http"
+        httpReq.headers["X-Forwarded-Proto"] = "http"
+
+        let httpsReq = Request(method: .get, uri: "/")
+        httpsReq.uri.scheme = "http"
+        httpsReq.headers["X-Forwarded-Proto"] = "https"
+
+        try drop.testResponse(to: httpReq)
+            .assertStatus(is: .seeOther)
+
+        try drop.testResponse(to: httpsReq)
+            .assertStatus(is: .ok)
+
+
+    }
+}