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<pre><span class="sourceLineNo">001</span>package org.junit.experimental.theories;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import java.lang.reflect.Constructor;<a name="line.3"></a>
<span class="sourceLineNo">004</span>import java.lang.reflect.Field;<a name="line.4"></a>
<span class="sourceLineNo">005</span>import java.lang.reflect.Method;<a name="line.5"></a>
<span class="sourceLineNo">006</span>import java.lang.reflect.Modifier;<a name="line.6"></a>
<span class="sourceLineNo">007</span>import java.util.ArrayList;<a name="line.7"></a>
<span class="sourceLineNo">008</span>import java.util.List;<a name="line.8"></a>
<span class="sourceLineNo">009</span><a name="line.9"></a>
<span class="sourceLineNo">010</span>import org.junit.Assert;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import org.junit.Assume;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import org.junit.experimental.theories.internal.Assignments;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import org.junit.experimental.theories.internal.ParameterizedAssertionError;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import org.junit.internal.AssumptionViolatedException;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import org.junit.runners.BlockJUnit4ClassRunner;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import org.junit.runners.model.FrameworkMethod;<a name="line.16"></a>
<span class="sourceLineNo">017</span>import org.junit.runners.model.InitializationError;<a name="line.17"></a>
<span class="sourceLineNo">018</span>import org.junit.runners.model.Statement;<a name="line.18"></a>
<span class="sourceLineNo">019</span>import org.junit.runners.model.TestClass;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>/**<a name="line.21"></a>
<span class="sourceLineNo">022</span> * The Theories runner allows to test a certain functionality against a subset of an infinite set of data points.<a name="line.22"></a>
<span class="sourceLineNo">023</span> * <p><a name="line.23"></a>
<span class="sourceLineNo">024</span> * A Theory is a piece of functionality (a method) that is executed against several data inputs called data points.<a name="line.24"></a>
<span class="sourceLineNo">025</span> * To make a test method a theory you mark it with <b>&#064;Theory</b>. To create a data point you create a public<a name="line.25"></a>
<span class="sourceLineNo">026</span> * field in your test class and mark it with <b>&#064;DataPoint</b>. The Theories runner then executes your test<a name="line.26"></a>
<span class="sourceLineNo">027</span> * method as many times as the number of data points declared, providing a different data point as<a name="line.27"></a>
<span class="sourceLineNo">028</span> * the input argument on each invocation.<a name="line.28"></a>
<span class="sourceLineNo">029</span> * </p><a name="line.29"></a>
<span class="sourceLineNo">030</span> * <p><a name="line.30"></a>
<span class="sourceLineNo">031</span> * A Theory differs from standard test method in that it captures some aspect of the intended behavior in possibly<a name="line.31"></a>
<span class="sourceLineNo">032</span> * infinite numbers of scenarios which corresponds to the number of data points declared. Using assumptions and<a name="line.32"></a>
<span class="sourceLineNo">033</span> * assertions properly together with covering multiple scenarios with different data points can make your tests more<a name="line.33"></a>
<span class="sourceLineNo">034</span> * flexible and bring them closer to scientific theories (hence the name).<a name="line.34"></a>
<span class="sourceLineNo">035</span> * </p><a name="line.35"></a>
<span class="sourceLineNo">036</span> * <p><a name="line.36"></a>
<span class="sourceLineNo">037</span> * For example:<a name="line.37"></a>
<span class="sourceLineNo">038</span> * <pre><a name="line.38"></a>
<span class="sourceLineNo">039</span> *<a name="line.39"></a>
<span class="sourceLineNo">040</span> * &#064;RunWith(<b>Theories.class</b>)<a name="line.40"></a>
<span class="sourceLineNo">041</span> * public class UserTest {<a name="line.41"></a>
<span class="sourceLineNo">042</span> * <b>&#064;DataPoint</b><a name="line.42"></a>
<span class="sourceLineNo">043</span> * public static String GOOD_USERNAME = "optimus";<a name="line.43"></a>
<span class="sourceLineNo">044</span> * <b>&#064;DataPoint</b><a name="line.44"></a>
<span class="sourceLineNo">045</span> * public static String USERNAME_WITH_SLASH = "optimus/prime";<a name="line.45"></a>
<span class="sourceLineNo">046</span> *<a name="line.46"></a>
<span class="sourceLineNo">047</span> * <b>&#064;Theory</b><a name="line.47"></a>
<span class="sourceLineNo">048</span> * public void filenameIncludesUsername(String username) {<a name="line.48"></a>
<span class="sourceLineNo">049</span> * assumeThat(username, not(containsString("/")));<a name="line.49"></a>
<span class="sourceLineNo">050</span> * assertThat(new User(username).configFileName(), containsString(username));<a name="line.50"></a>
<span class="sourceLineNo">051</span> * }<a name="line.51"></a>
<span class="sourceLineNo">052</span> * }<a name="line.52"></a>
<span class="sourceLineNo">053</span> * </pre><a name="line.53"></a>
<span class="sourceLineNo">054</span> * This makes it clear that the user's filename should be included in the config file name,<a name="line.54"></a>
<span class="sourceLineNo">055</span> * only if it doesn't contain a slash. Another test or theory might define what happens when a username does contain<a name="line.55"></a>
<span class="sourceLineNo">056</span> * a slash. <code>UserTest</code> will attempt to run <code>filenameIncludesUsername</code> on every compatible data<a name="line.56"></a>
<span class="sourceLineNo">057</span> * point defined in the class. If any of the assumptions fail, the data point is silently ignored. If all of the<a name="line.57"></a>
<span class="sourceLineNo">058</span> * assumptions pass, but an assertion fails, the test fails.<a name="line.58"></a>
<span class="sourceLineNo">059</span> * <p><a name="line.59"></a>
<span class="sourceLineNo">060</span> * Defining general statements as theories allows data point reuse across a bunch of functionality tests and also<a name="line.60"></a>
<span class="sourceLineNo">061</span> * allows automated tools to search for new, unexpected data points that expose bugs.<a name="line.61"></a>
<span class="sourceLineNo">062</span> * </p><a name="line.62"></a>
<span class="sourceLineNo">063</span> * <p><a name="line.63"></a>
<span class="sourceLineNo">064</span> * The support for Theories has been absorbed from the Popper project, and more complete documentation can be found<a name="line.64"></a>
<span class="sourceLineNo">065</span> * from that projects archived documentation.<a name="line.65"></a>
<span class="sourceLineNo">066</span> * </p><a name="line.66"></a>
<span class="sourceLineNo">067</span> *<a name="line.67"></a>
<span class="sourceLineNo">068</span> * @see <a href="http://web.archive.org/web/20071012143326/popper.tigris.org/tutorial.html">Archived Popper project documentation</a><a name="line.68"></a>
<span class="sourceLineNo">069</span> * @see <a href="http://web.archive.org/web/20110608210825/http://shareandenjoy.saff.net/tdd-specifications.pdf">Paper on Theories</a><a name="line.69"></a>
<span class="sourceLineNo">070</span> */<a name="line.70"></a>
<span class="sourceLineNo">071</span>public class Theories extends BlockJUnit4ClassRunner {<a name="line.71"></a>
<span class="sourceLineNo">072</span> public Theories(Class<?> klass) throws InitializationError {<a name="line.72"></a>
<span class="sourceLineNo">073</span> super(klass);<a name="line.73"></a>
<span class="sourceLineNo">074</span> }<a name="line.74"></a>
<span class="sourceLineNo">075</span><a name="line.75"></a>
<span class="sourceLineNo">076</span> @Override<a name="line.76"></a>
<span class="sourceLineNo">077</span> protected void collectInitializationErrors(List<Throwable> errors) {<a name="line.77"></a>
<span class="sourceLineNo">078</span> super.collectInitializationErrors(errors);<a name="line.78"></a>
<span class="sourceLineNo">079</span> validateDataPointFields(errors);<a name="line.79"></a>
<span class="sourceLineNo">080</span> validateDataPointMethods(errors);<a name="line.80"></a>
<span class="sourceLineNo">081</span> }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span> private void validateDataPointFields(List<Throwable> errors) {<a name="line.83"></a>
<span class="sourceLineNo">084</span> Field[] fields = getTestClass().getJavaClass().getDeclaredFields();<a name="line.84"></a>
<span class="sourceLineNo">085</span><a name="line.85"></a>
<span class="sourceLineNo">086</span> for (Field field : fields) {<a name="line.86"></a>
<span class="sourceLineNo">087</span> if (field.getAnnotation(DataPoint.class) == null && field.getAnnotation(DataPoints.class) == null) {<a name="line.87"></a>
<span class="sourceLineNo">088</span> continue;<a name="line.88"></a>
<span class="sourceLineNo">089</span> }<a name="line.89"></a>
<span class="sourceLineNo">090</span> if (!Modifier.isStatic(field.getModifiers())) {<a name="line.90"></a>
<span class="sourceLineNo">091</span> errors.add(new Error("DataPoint field " + field.getName() + " must be static"));<a name="line.91"></a>
<span class="sourceLineNo">092</span> }<a name="line.92"></a>
<span class="sourceLineNo">093</span> if (!Modifier.isPublic(field.getModifiers())) {<a name="line.93"></a>
<span class="sourceLineNo">094</span> errors.add(new Error("DataPoint field " + field.getName() + " must be public"));<a name="line.94"></a>
<span class="sourceLineNo">095</span> }<a name="line.95"></a>
<span class="sourceLineNo">096</span> }<a name="line.96"></a>
<span class="sourceLineNo">097</span> }<a name="line.97"></a>
<span class="sourceLineNo">098</span><a name="line.98"></a>
<span class="sourceLineNo">099</span> private void validateDataPointMethods(List<Throwable> errors) {<a name="line.99"></a>
<span class="sourceLineNo">100</span> Method[] methods = getTestClass().getJavaClass().getDeclaredMethods();<a name="line.100"></a>
<span class="sourceLineNo">101</span> <a name="line.101"></a>
<span class="sourceLineNo">102</span> for (Method method : methods) {<a name="line.102"></a>
<span class="sourceLineNo">103</span> if (method.getAnnotation(DataPoint.class) == null && method.getAnnotation(DataPoints.class) == null) {<a name="line.103"></a>
<span class="sourceLineNo">104</span> continue;<a name="line.104"></a>
<span class="sourceLineNo">105</span> }<a name="line.105"></a>
<span class="sourceLineNo">106</span> if (!Modifier.isStatic(method.getModifiers())) {<a name="line.106"></a>
<span class="sourceLineNo">107</span> errors.add(new Error("DataPoint method " + method.getName() + " must be static"));<a name="line.107"></a>
<span class="sourceLineNo">108</span> }<a name="line.108"></a>
<span class="sourceLineNo">109</span> if (!Modifier.isPublic(method.getModifiers())) {<a name="line.109"></a>
<span class="sourceLineNo">110</span> errors.add(new Error("DataPoint method " + method.getName() + " must be public"));<a name="line.110"></a>
<span class="sourceLineNo">111</span> }<a name="line.111"></a>
<span class="sourceLineNo">112</span> }<a name="line.112"></a>
<span class="sourceLineNo">113</span> }<a name="line.113"></a>
<span class="sourceLineNo">114</span><a name="line.114"></a>
<span class="sourceLineNo">115</span> @Override<a name="line.115"></a>
<span class="sourceLineNo">116</span> protected void validateConstructor(List<Throwable> errors) {<a name="line.116"></a>
<span class="sourceLineNo">117</span> validateOnlyOneConstructor(errors);<a name="line.117"></a>
<span class="sourceLineNo">118</span> }<a name="line.118"></a>
<span class="sourceLineNo">119</span><a name="line.119"></a>
<span class="sourceLineNo">120</span> @Override<a name="line.120"></a>
<span class="sourceLineNo">121</span> protected void validateTestMethods(List<Throwable> errors) {<a name="line.121"></a>
<span class="sourceLineNo">122</span> for (FrameworkMethod each : computeTestMethods()) {<a name="line.122"></a>
<span class="sourceLineNo">123</span> if (each.getAnnotation(Theory.class) != null) {<a name="line.123"></a>
<span class="sourceLineNo">124</span> each.validatePublicVoid(false, errors);<a name="line.124"></a>
<span class="sourceLineNo">125</span> each.validateNoTypeParametersOnArgs(errors);<a name="line.125"></a>
<span class="sourceLineNo">126</span> } else {<a name="line.126"></a>
<span class="sourceLineNo">127</span> each.validatePublicVoidNoArg(false, errors);<a name="line.127"></a>
<span class="sourceLineNo">128</span> }<a name="line.128"></a>
<span class="sourceLineNo">129</span> <a name="line.129"></a>
<span class="sourceLineNo">130</span> for (ParameterSignature signature : ParameterSignature.signatures(each.getMethod())) {<a name="line.130"></a>
<span class="sourceLineNo">131</span> ParametersSuppliedBy annotation = signature.findDeepAnnotation(ParametersSuppliedBy.class);<a name="line.131"></a>
<span class="sourceLineNo">132</span> if (annotation != null) {<a name="line.132"></a>
<span class="sourceLineNo">133</span> validateParameterSupplier(annotation.value(), errors);<a name="line.133"></a>
<span class="sourceLineNo">134</span> }<a name="line.134"></a>
<span class="sourceLineNo">135</span> }<a name="line.135"></a>
<span class="sourceLineNo">136</span> }<a name="line.136"></a>
<span class="sourceLineNo">137</span> }<a name="line.137"></a>
<span class="sourceLineNo">138</span><a name="line.138"></a>
<span class="sourceLineNo">139</span> private void validateParameterSupplier(Class<? extends ParameterSupplier> supplierClass, List<Throwable> errors) {<a name="line.139"></a>
<span class="sourceLineNo">140</span> Constructor<?>[] constructors = supplierClass.getConstructors();<a name="line.140"></a>
<span class="sourceLineNo">141</span> <a name="line.141"></a>
<span class="sourceLineNo">142</span> if (constructors.length != 1) {<a name="line.142"></a>
<span class="sourceLineNo">143</span> errors.add(new Error("ParameterSupplier " + supplierClass.getName() + <a name="line.143"></a>
<span class="sourceLineNo">144</span> " must have only one constructor (either empty or taking only a TestClass)"));<a name="line.144"></a>
<span class="sourceLineNo">145</span> } else {<a name="line.145"></a>
<span class="sourceLineNo">146</span> Class<?>[] paramTypes = constructors[0].getParameterTypes();<a name="line.146"></a>
<span class="sourceLineNo">147</span> if (!(paramTypes.length == 0) && !paramTypes[0].equals(TestClass.class)) {<a name="line.147"></a>
<span class="sourceLineNo">148</span> errors.add(new Error("ParameterSupplier " + supplierClass.getName() + <a name="line.148"></a>
<span class="sourceLineNo">149</span> " constructor must take either nothing or a single TestClass instance"));<a name="line.149"></a>
<span class="sourceLineNo">150</span> }<a name="line.150"></a>
<span class="sourceLineNo">151</span> }<a name="line.151"></a>
<span class="sourceLineNo">152</span> }<a name="line.152"></a>
<span class="sourceLineNo">153</span><a name="line.153"></a>
<span class="sourceLineNo">154</span> @Override<a name="line.154"></a>
<span class="sourceLineNo">155</span> protected List<FrameworkMethod> computeTestMethods() {<a name="line.155"></a>
<span class="sourceLineNo">156</span> List<FrameworkMethod> testMethods = new ArrayList<FrameworkMethod>(super.computeTestMethods());<a name="line.156"></a>
<span class="sourceLineNo">157</span> List<FrameworkMethod> theoryMethods = getTestClass().getAnnotatedMethods(Theory.class);<a name="line.157"></a>
<span class="sourceLineNo">158</span> testMethods.removeAll(theoryMethods);<a name="line.158"></a>
<span class="sourceLineNo">159</span> testMethods.addAll(theoryMethods);<a name="line.159"></a>
<span class="sourceLineNo">160</span> return testMethods;<a name="line.160"></a>
<span class="sourceLineNo">161</span> }<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span> @Override<a name="line.163"></a>
<span class="sourceLineNo">164</span> public Statement methodBlock(final FrameworkMethod method) {<a name="line.164"></a>
<span class="sourceLineNo">165</span> return new TheoryAnchor(method, getTestClass());<a name="line.165"></a>
<span class="sourceLineNo">166</span> }<a name="line.166"></a>
<span class="sourceLineNo">167</span><a name="line.167"></a>
<span class="sourceLineNo">168</span> public static class TheoryAnchor extends Statement {<a name="line.168"></a>
<span class="sourceLineNo">169</span> private int successes = 0;<a name="line.169"></a>
<span class="sourceLineNo">170</span><a name="line.170"></a>
<span class="sourceLineNo">171</span> private final FrameworkMethod testMethod;<a name="line.171"></a>
<span class="sourceLineNo">172</span> private final TestClass testClass;<a name="line.172"></a>
<span class="sourceLineNo">173</span><a name="line.173"></a>
<span class="sourceLineNo">174</span> private List<AssumptionViolatedException> fInvalidParameters = new ArrayList<AssumptionViolatedException>();<a name="line.174"></a>
<span class="sourceLineNo">175</span><a name="line.175"></a>
<span class="sourceLineNo">176</span> public TheoryAnchor(FrameworkMethod testMethod, TestClass testClass) {<a name="line.176"></a>
<span class="sourceLineNo">177</span> this.testMethod = testMethod;<a name="line.177"></a>
<span class="sourceLineNo">178</span> this.testClass = testClass;<a name="line.178"></a>
<span class="sourceLineNo">179</span> }<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
<span class="sourceLineNo">181</span> private TestClass getTestClass() {<a name="line.181"></a>
<span class="sourceLineNo">182</span> return testClass;<a name="line.182"></a>
<span class="sourceLineNo">183</span> }<a name="line.183"></a>
<span class="sourceLineNo">184</span><a name="line.184"></a>
<span class="sourceLineNo">185</span> @Override<a name="line.185"></a>
<span class="sourceLineNo">186</span> public void evaluate() throws Throwable {<a name="line.186"></a>
<span class="sourceLineNo">187</span> runWithAssignment(Assignments.allUnassigned(<a name="line.187"></a>
<span class="sourceLineNo">188</span> testMethod.getMethod(), getTestClass()));<a name="line.188"></a>
<span class="sourceLineNo">189</span> <a name="line.189"></a>
<span class="sourceLineNo">190</span> //if this test method is not annotated with Theory, then no successes is a valid case<a name="line.190"></a>
<span class="sourceLineNo">191</span> boolean hasTheoryAnnotation = testMethod.getAnnotation(Theory.class) != null;<a name="line.191"></a>
<span class="sourceLineNo">192</span> if (successes == 0 && hasTheoryAnnotation) {<a name="line.192"></a>
<span class="sourceLineNo">193</span> Assert<a name="line.193"></a>
<span class="sourceLineNo">194</span> .fail("Never found parameters that satisfied method assumptions. Violated assumptions: "<a name="line.194"></a>
<span class="sourceLineNo">195</span> + fInvalidParameters);<a name="line.195"></a>
<span class="sourceLineNo">196</span> }<a name="line.196"></a>
<span class="sourceLineNo">197</span> }<a name="line.197"></a>
<span class="sourceLineNo">198</span><a name="line.198"></a>
<span class="sourceLineNo">199</span> protected void runWithAssignment(Assignments parameterAssignment)<a name="line.199"></a>
<span class="sourceLineNo">200</span> throws Throwable {<a name="line.200"></a>
<span class="sourceLineNo">201</span> if (!parameterAssignment.isComplete()) {<a name="line.201"></a>
<span class="sourceLineNo">202</span> runWithIncompleteAssignment(parameterAssignment);<a name="line.202"></a>
<span class="sourceLineNo">203</span> } else {<a name="line.203"></a>
<span class="sourceLineNo">204</span> runWithCompleteAssignment(parameterAssignment);<a name="line.204"></a>
<span class="sourceLineNo">205</span> }<a name="line.205"></a>
<span class="sourceLineNo">206</span> }<a name="line.206"></a>
<span class="sourceLineNo">207</span><a name="line.207"></a>
<span class="sourceLineNo">208</span> protected void runWithIncompleteAssignment(Assignments incomplete)<a name="line.208"></a>
<span class="sourceLineNo">209</span> throws Throwable {<a name="line.209"></a>
<span class="sourceLineNo">210</span> for (PotentialAssignment source : incomplete<a name="line.210"></a>
<span class="sourceLineNo">211</span> .potentialsForNextUnassigned()) {<a name="line.211"></a>
<span class="sourceLineNo">212</span> runWithAssignment(incomplete.assignNext(source));<a name="line.212"></a>
<span class="sourceLineNo">213</span> }<a name="line.213"></a>
<span class="sourceLineNo">214</span> }<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span> protected void runWithCompleteAssignment(final Assignments complete)<a name="line.216"></a>
<span class="sourceLineNo">217</span> throws Throwable {<a name="line.217"></a>
<span class="sourceLineNo">218</span> new BlockJUnit4ClassRunner(getTestClass().getJavaClass()) {<a name="line.218"></a>
<span class="sourceLineNo">219</span> @Override<a name="line.219"></a>
<span class="sourceLineNo">220</span> protected void collectInitializationErrors(<a name="line.220"></a>
<span class="sourceLineNo">221</span> List<Throwable> errors) {<a name="line.221"></a>
<span class="sourceLineNo">222</span> // do nothing<a name="line.222"></a>
<span class="sourceLineNo">223</span> }<a name="line.223"></a>
<span class="sourceLineNo">224</span><a name="line.224"></a>
<span class="sourceLineNo">225</span> @Override<a name="line.225"></a>
<span class="sourceLineNo">226</span> public Statement methodBlock(FrameworkMethod method) {<a name="line.226"></a>
<span class="sourceLineNo">227</span> final Statement statement = super.methodBlock(method);<a name="line.227"></a>
<span class="sourceLineNo">228</span> return new Statement() {<a name="line.228"></a>
<span class="sourceLineNo">229</span> @Override<a name="line.229"></a>
<span class="sourceLineNo">230</span> public void evaluate() throws Throwable {<a name="line.230"></a>
<span class="sourceLineNo">231</span> try {<a name="line.231"></a>
<span class="sourceLineNo">232</span> statement.evaluate();<a name="line.232"></a>
<span class="sourceLineNo">233</span> handleDataPointSuccess();<a name="line.233"></a>
<span class="sourceLineNo">234</span> } catch (AssumptionViolatedException e) {<a name="line.234"></a>
<span class="sourceLineNo">235</span> handleAssumptionViolation(e);<a name="line.235"></a>
<span class="sourceLineNo">236</span> } catch (Throwable e) {<a name="line.236"></a>
<span class="sourceLineNo">237</span> reportParameterizedError(e, complete<a name="line.237"></a>
<span class="sourceLineNo">238</span> .getArgumentStrings(nullsOk()));<a name="line.238"></a>
<span class="sourceLineNo">239</span> }<a name="line.239"></a>
<span class="sourceLineNo">240</span> }<a name="line.240"></a>
<span class="sourceLineNo">241</span><a name="line.241"></a>
<span class="sourceLineNo">242</span> };<a name="line.242"></a>
<span class="sourceLineNo">243</span> }<a name="line.243"></a>
<span class="sourceLineNo">244</span><a name="line.244"></a>
<span class="sourceLineNo">245</span> @Override<a name="line.245"></a>
<span class="sourceLineNo">246</span> protected Statement methodInvoker(FrameworkMethod method, Object test) {<a name="line.246"></a>
<span class="sourceLineNo">247</span> return methodCompletesWithParameters(method, complete, test);<a name="line.247"></a>
<span class="sourceLineNo">248</span> }<a name="line.248"></a>
<span class="sourceLineNo">249</span><a name="line.249"></a>
<span class="sourceLineNo">250</span> @Override<a name="line.250"></a>
<span class="sourceLineNo">251</span> public Object createTest() throws Exception {<a name="line.251"></a>
<span class="sourceLineNo">252</span> Object[] params = complete.getConstructorArguments();<a name="line.252"></a>
<span class="sourceLineNo">253</span> <a name="line.253"></a>
<span class="sourceLineNo">254</span> if (!nullsOk()) {<a name="line.254"></a>
<span class="sourceLineNo">255</span> Assume.assumeNotNull(params);<a name="line.255"></a>
<span class="sourceLineNo">256</span> }<a name="line.256"></a>
<span class="sourceLineNo">257</span> <a name="line.257"></a>
<span class="sourceLineNo">258</span> return getTestClass().getOnlyConstructor().newInstance(params);<a name="line.258"></a>
<span class="sourceLineNo">259</span> }<a name="line.259"></a>
<span class="sourceLineNo">260</span> }.methodBlock(testMethod).evaluate();<a name="line.260"></a>
<span class="sourceLineNo">261</span> }<a name="line.261"></a>
<span class="sourceLineNo">262</span><a name="line.262"></a>
<span class="sourceLineNo">263</span> private Statement methodCompletesWithParameters(<a name="line.263"></a>
<span class="sourceLineNo">264</span> final FrameworkMethod method, final Assignments complete, final Object freshInstance) {<a name="line.264"></a>
<span class="sourceLineNo">265</span> return new Statement() {<a name="line.265"></a>
<span class="sourceLineNo">266</span> @Override<a name="line.266"></a>
<span class="sourceLineNo">267</span> public void evaluate() throws Throwable {<a name="line.267"></a>
<span class="sourceLineNo">268</span> final Object[] values = complete.getMethodArguments();<a name="line.268"></a>
<span class="sourceLineNo">269</span> <a name="line.269"></a>
<span class="sourceLineNo">270</span> if (!nullsOk()) {<a name="line.270"></a>
<span class="sourceLineNo">271</span> Assume.assumeNotNull(values);<a name="line.271"></a>
<span class="sourceLineNo">272</span> }<a name="line.272"></a>
<span class="sourceLineNo">273</span> <a name="line.273"></a>
<span class="sourceLineNo">274</span> method.invokeExplosively(freshInstance, values);<a name="line.274"></a>
<span class="sourceLineNo">275</span> }<a name="line.275"></a>
<span class="sourceLineNo">276</span> };<a name="line.276"></a>
<span class="sourceLineNo">277</span> }<a name="line.277"></a>
<span class="sourceLineNo">278</span><a name="line.278"></a>
<span class="sourceLineNo">279</span> protected void handleAssumptionViolation(AssumptionViolatedException e) {<a name="line.279"></a>
<span class="sourceLineNo">280</span> fInvalidParameters.add(e);<a name="line.280"></a>
<span class="sourceLineNo">281</span> }<a name="line.281"></a>
<span class="sourceLineNo">282</span><a name="line.282"></a>
<span class="sourceLineNo">283</span> protected void reportParameterizedError(Throwable e, Object... params)<a name="line.283"></a>
<span class="sourceLineNo">284</span> throws Throwable {<a name="line.284"></a>
<span class="sourceLineNo">285</span> if (params.length == 0) {<a name="line.285"></a>
<span class="sourceLineNo">286</span> throw e;<a name="line.286"></a>
<span class="sourceLineNo">287</span> }<a name="line.287"></a>
<span class="sourceLineNo">288</span> throw new ParameterizedAssertionError(e, testMethod.getName(),<a name="line.288"></a>
<span class="sourceLineNo">289</span> params);<a name="line.289"></a>
<span class="sourceLineNo">290</span> }<a name="line.290"></a>
<span class="sourceLineNo">291</span><a name="line.291"></a>
<span class="sourceLineNo">292</span> private boolean nullsOk() {<a name="line.292"></a>
<span class="sourceLineNo">293</span> Theory annotation = testMethod.getMethod().getAnnotation(<a name="line.293"></a>
<span class="sourceLineNo">294</span> Theory.class);<a name="line.294"></a>
<span class="sourceLineNo">295</span> if (annotation == null) {<a name="line.295"></a>
<span class="sourceLineNo">296</span> return false;<a name="line.296"></a>
<span class="sourceLineNo">297</span> }<a name="line.297"></a>
<span class="sourceLineNo">298</span> return annotation.nullsAccepted();<a name="line.298"></a>
<span class="sourceLineNo">299</span> }<a name="line.299"></a>
<span class="sourceLineNo">300</span><a name="line.300"></a>
<span class="sourceLineNo">301</span> protected void handleDataPointSuccess() {<a name="line.301"></a>
<span class="sourceLineNo">302</span> successes++;<a name="line.302"></a>
<span class="sourceLineNo">303</span> }<a name="line.303"></a>
<span class="sourceLineNo">304</span> }<a name="line.304"></a>
<span class="sourceLineNo">305</span>}<a name="line.305"></a>
</pre>
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