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A JavaScript unit test plugin that processes JavaScript sources and Jasmine specs, prepares test runner HTML files, executes Jasmine specs headlessly with HtmlUnit, and produces JUnit XML reports

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package com.github.searls.jasmine.server;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.eclipse.jetty.server.Request;
import org.eclipse.jetty.server.handler.ResourceHandler;
import org.eclipse.jetty.util.resource.Resource;

import com.github.searls.jasmine.AbstractJasmineMojo;
import com.github.searls.jasmine.CreatesManualRunner;
import com.github.searls.jasmine.NullLog;
import com.github.searls.jasmine.coffee.DetectsCoffee;
import com.github.searls.jasmine.coffee.HandlesRequestsForCoffee;

public class JasmineResourceHandler extends ResourceHandler {

  private DetectsCoffee detectsCoffee = new DetectsCoffee();
  private HandlesRequestsForCoffee handlesRequestsForCoffee = new HandlesRequestsForCoffee();
  private CreatesManualRunner createsManualRunner;

  public JasmineResourceHandler(AbstractJasmineMojo config) {
    createsManualRunner = new CreatesManualRunner(config);
    createsManualRunner.setLog(new NullLog());
  }

  @Override
  public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
    createManualSpecRunnerIfNecessary(target);
    Resource resource = getResource(baseRequest);
    response.addDateHeader("EXPIRES", 0L);
    if (detectsCoffee.detect(target) && weCanHandleIt(baseRequest, resource)) {
      handlesRequestsForCoffee.handle(baseRequest, response, resource);
    } else {
      //Not testable. Who knew test-driving an LSP violation would be this hard. Sigh.  :-(
      super.handle(target, baseRequest, baseRequest, response);
    }
  }

  private void createManualSpecRunnerIfNecessary(String target) throws IOException {
    if ("/".equals(target)) {
      createsManualRunner.create();
    }
  }

  private boolean weCanHandleIt(Request baseRequest, Resource resource) {
    return !baseRequest.isHandled() && resource != null && resource.exists();
  }

}