HttpMethodOverrideTest.java

package com.vtence.molecule.middlewares;

import com.vtence.molecule.Application;
import com.vtence.molecule.Request;
import com.vtence.molecule.Response;
import org.junit.Before;
import org.junit.Test;

import static com.vtence.molecule.http.HttpMethod.GET;
import static com.vtence.molecule.http.HttpMethod.POST;
import static com.vtence.molecule.testing.ResponseAssert.assertThat;

public class HttpMethodOverrideTest {

    HttpMethodOverride methodOverride = new HttpMethodOverride();

    Request request = new Request();
    Response response = new Response();

    @Before public void
    echoHttpMethod()  {
        methodOverride.connectTo(echoMethodName());
    }

    @Test public void
    doesNotAffectGetMethods() throws Exception {
        request.addParameter("_method", "delete");
        methodOverride.handle(request.method(GET), response);
        assertMethod("GET");
    }

    @Test public void
    leavesMethodUnchangedWhenOverrideParameterAbsent() throws Exception {
        methodOverride.handle(request.method(POST), response);
        assertMethod("POST");
    }

    @Test public void
    changesPostMethodsAccordingToOverrideParameter() throws Exception {
        request.addParameter("_method", "delete");
        methodOverride.handle(request.method(POST), response);
        assertMethod("DELETE");
    }

    @Test public void
    leavesMethodUnchangedIfMethodIsNotSupported() throws Exception {
        request.addParameter("_method", "unsupported");
        methodOverride.handle(request.method(POST), response);
        assertMethod("POST");
    }

    private Application echoMethodName() {
        return (request, response) -> response.body(request.method().name());
    }

    private void assertMethod(String method) {
        assertThat(response).hasBodyText(method);
    }
}