ApplicationTest.java

package org.deftserver.web;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import java.util.HashMap;
import java.util.Map;
import java.util.regex.PatternSyntaxException;

import org.deftserver.web.handler.BadRequestRequestHandler;
import org.deftserver.web.handler.NotFoundRequestHandler;
import org.deftserver.web.handler.RequestHandler;
import org.deftserver.web.http.HttpRequest;
import org.deftserver.web.http.HttpResponse;
import org.junit.Test;


public class ApplicationTest {
	
	@Test
	public void simpleApplicationTest() {
		Map<String, RequestHandler> handlers = new HashMap<String, RequestHandler>();
		final RequestHandler handler1 = new RequestHandler() {
			@Override public void get(HttpRequest request, HttpResponse response) { }
		};
		final RequestHandler handler2 = new RequestHandler() {
			@Override public void get(HttpRequest request, HttpResponse response) { }
		};
		final RequestHandler handler3 = new RequestHandler() {
			@Override public void get(HttpRequest request, HttpResponse response) { }
		};
		final RequestHandler handler4 = new RequestHandler() {
			@Override public void get(HttpRequest request, HttpResponse response) { }
		};
		
		handlers.put("/", handler1);
		handlers.put("/persons/([0-9]+)", handler2);
		handlers.put("/persons/phone_numbers", handler3);
		handlers.put("/pets/([0-9]{0,3})", handler4);
		Application app = new Application(handlers);
		
		
		String requestLine = "GET / HTTP/1.1";
		Map<String, String> headers = new HashMap<String, String>();
		headers.put("host", "localhost");
		HttpRequest request = new HttpRequest(requestLine, headers);
		
		
		assertNotNull(app.getHandler(request));
		
		requestLine = "GET /persons/1911 HTTP/1.1";
		request = new HttpRequest(requestLine, headers);
		assertNotNull(app.getHandler(request));
		
		
		requestLine = "GET /persons/phone_numbers HTTP/1.1";
		request = new HttpRequest(requestLine, headers);
		assertNotNull(app.getHandler(request));
		
		requestLine = "GET /pets/123 HTTP/1.1";
		request = new HttpRequest(requestLine, headers);
		assertNotNull(app.getHandler(request));
		
		
		request = new HttpRequest("GET /missing HTTP/1.1", headers);
		assertEquals(NotFoundRequestHandler.getInstance(), app.getHandler(request));
		
		request = new HttpRequest("GET /persons HTTP/1.1", headers);
		assertEquals(NotFoundRequestHandler.getInstance(), app.getHandler(request));
		
		request = new HttpRequest("GET /persons/roger HTTP/1.1", headers);
		assertEquals(NotFoundRequestHandler.getInstance(), app.getHandler(request));
		
		request = new HttpRequest("GET /persons/123a HTTP/1.1", headers);
		assertEquals(NotFoundRequestHandler.getInstance(), app.getHandler(request));
		
		request = new HttpRequest("GET /persons/a123 HTTP/1.1", headers);
		assertEquals(NotFoundRequestHandler.getInstance(), app.getHandler(request));
		
		request = new HttpRequest("GET /pets/a123 HTTP/1.1", headers);
		assertEquals(NotFoundRequestHandler.getInstance(), app.getHandler(request));
		
		request = new HttpRequest("GET /pets/123a HTTP/1.1", headers);
		assertEquals(NotFoundRequestHandler.getInstance(), app.getHandler(request));
		
		request = new HttpRequest("GET /pets/1234 HTTP/1.1", headers);
		assertEquals(NotFoundRequestHandler.getInstance(), app.getHandler(request));
		
		request = new HttpRequest("GET / HTTP/1.1", headers);
		assertEquals(handler1, app.getHandler(request));
		
		request = new HttpRequest("GET /persons/1911 HTTP/1.1", headers);
		assertEquals(handler2, app.getHandler(request));
		
		request = new HttpRequest("GET /persons/phone_numbers HTTP/1.1", headers);
		assertEquals(handler3, app.getHandler(request));
		
		request = new HttpRequest("GET /pets/123 HTTP/1.1", headers);
		assertEquals(handler4, app.getHandler(request));
		
		//Verify that BadRequestRequestHandler is returned if request does not include Host header
		headers = new HashMap<String, String>();
		request = new HttpRequest("GET /pets/123 HTTP/1.1", headers);
		assertEquals(BadRequestRequestHandler.getInstance(), app.getHandler(request));
		
	}
	
	@Test(expected=PatternSyntaxException.class)
	public void malFormedRegularExpressionTest() {
		Map<String, RequestHandler> handlers = new HashMap<String, RequestHandler>();
		final RequestHandler handler1 = new RequestHandler() {
			@Override public void get(HttpRequest request, HttpResponse response) { }
		};
		
		handlers.put("/persons/([[0-9]{0,3})", handler1);	// path contains malformed (a '[' too much) regex
		Application app = new Application(handlers);

	}
}