com.github.searls.jasmine.coffee.CoffeeScript Maven / Gradle / Ivy

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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.coffee;

import java.io.IOException;
import java.util.Collections;
import java.util.Map;
import java.util.WeakHashMap;

import org.apache.commons.lang.StringEscapeUtils;

import com.gargoylesoftware.htmlunit.MockWebConnection;
import com.gargoylesoftware.htmlunit.ScriptResult;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.github.searls.jasmine.io.IOUtilsWrapper;

public class CoffeeScript {

	private static Map cache = Collections.synchronizedMap(new WeakHashMap());
	
	private ThreadLocal htmlPage = new ThreadLocal() {
		@Override
		protected HtmlPage initialValue() {
			MockWebConnection webConnection = new MockWebConnection();
			WebClient webClient = new WebClient();
			webClient.setWebConnection(webConnection);
			try {
				HtmlPage page = webClient.getPage(WebClient.URL_ABOUT_BLANK);
				page.executeJavaScript(ioUtilsWrapper.toString("/vendor/js/coffee-script.js"));
				return page;
			} catch (IOException e) {
				throw new RuntimeException(e);
			}
		}
	};
	
	private IOUtilsWrapper ioUtilsWrapper = new IOUtilsWrapper();
	
	public String compile(String coffee) throws IOException {
		String escapedCoffee = StringEscapeUtils.escapeJavaScript(coffee);
		return cache.containsKey(escapedCoffee) ? cache.get(escapedCoffee) : compileAndCache(escapedCoffee);
	}
	
	private String compileAndCache(String input) {
		ScriptResult scriptResult = htmlPage.get().executeJavaScript(String.format("CoffeeScript.compile(\"%s\");", input));
		String result = (String) scriptResult.getJavaScriptResult();
		cache.put(input,result);
		return result;
	}

}