shelf_test_handler

Description:

shelf test handler

A shelf handler that makes it easy to test HTTP interactions, especially
when multiple different HTTP requests are expected in a particular sequence.
You can construct a ShelfTestHandler directly, but most users will probably
want to use the ShelfTestServer instead. This wraps the handler in a simple
HTTP server, whose URL can be passed to client code.
import 'package:shelf/shelf.dart' as shelf;
import 'package:shelf_test_handler/shelf_test_handler.dart';
import 'package:test/test.dart';

import 'package:my_package/my_package.dart';

void main() {
test("client performs protocol handshake", () async {
// This is just a utility class that starts a server for a ShelfTestHandler.
var server = new ShelfTestServer();

// Asserts that the client will make a GET request to /token.
server.handler.expect("GET", "/token", (request) async {
// This handles the GET /token request.
var body = JSON.parse(await request.readAsString());

// Any failures in this handler will cause the test to fail, so it's safe
// to make assertions.
expect(body, containsPair("id", "my_package_id"));
expect(body, containsPair("secret", "123abc"));

return new shelf.Response.ok(JSON.encode({"token": "a1b2c3"}),
headers: {"content-type": "application/json"});
});

// Requests made against `server.url` will be handled by the handlers we
// declare.
var myPackage = new MyPackage(server.url);

// If the client makes any unexpected requests, the test will fail.
await myPackage.performHandshake();
});
}
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