1 files changed, 82 insertions, 0 deletions
diff --git a/src/test/java/junitparams/FilterableTest.java b/src/test/java/junitparams/FilterableTest.java
new file mode 100644
index 0000000..05b2b4c
--- /dev/null
+++ b/src/test/java/junitparams/FilterableTest.java
@@ -0,0 +1,82 @@
+package junitparams;
+
+import org.junit.Test;
+import org.junit.runner.Description;
+import org.junit.runner.JUnitCore;
+import org.junit.runner.Request;
+import org.junit.runner.Result;
+import org.junit.runner.manipulation.Filter;
+
+import static org.assertj.core.api.Assertions.*;
+
+public class FilterableTest {
+
+    @Test
+    public void shouldRunAllTests() throws Exception {
+        Request request = Request.aClass(SampleTestCase.class);
+
+        Result result = new JUnitCore().run(request);
+
+        assertThat(result.getRunCount()).isEqualTo(3);
+    }
+
+    @Test
+    public void shouldRunSingleTestWithoutParameters() throws Exception {
+        Request request = requestSingleMethodRun(SampleTestCase.class, "firstTestMethod");
+
+        Result result = new JUnitCore().run(request);
+
+        assertThat(result.getRunCount()).isEqualTo(1);
+    }
+
+    @Test
+    public void shouldRunParametrisedTest() throws Exception {
+        Request request = requestSingleMethodRun(SampleTestCase.class, "secondTestMethod");
+
+        Result result = new JUnitCore().run(request);
+
+        assertThat(result.getRunCount()).isEqualTo(2);
+    }
+
+    @Test
+    public void shouldReturnOneDescriptionForSimpleTestCase() throws Exception {
+        Request request = requestSingleMethodRun(SampleTestCase.class, "firstTestMethod");
+
+        Description description = request.getRunner().getDescription();
+
+        assertThat(description.getChildren()).hasSize(1);
+        assertThat(description.getChildren().get(0).getChildren()).hasSize(0);
+    }
+
+    @Test
+    public void shouldReturnParametrizedDescriptionsForParametrizedTestCase() throws Exception {
+        Request request = requestSingleMethodRun(SampleTestCase.class, "secondTestMethod");
+
+        Description description = request.getRunner().getDescription();
+
+        assertThat(description.getChildren()).hasSize(1);
+        assertThat(description.getChildren().get(0).getChildren()).hasSize(2);
+    }
+
+    private Request requestSingleMethodRun(Class<SampleTestCase> clazz, String methodName) {
+        return Request.aClass(clazz).filterWith(new SingleMethodFilter(methodName));
+    }
+
+    private static class SingleMethodFilter extends Filter {
+        private final String methodName;
+
+        public SingleMethodFilter(String methodName) {
+            this.methodName = methodName;
+        }
+
+        @Override
+        public boolean shouldRun(Description description) {
+            return description.getDisplayName().contains(methodName);
+        }
+
+        @Override
+        public String describe() {
+            return methodName;
+        }
+    }
+}