samples: added list testcase result sample (#315)

* samples: added list testcase result sample

* Added agent ids

* Lint fix

* lint fix

* lint fix

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: galz10

dialogflow-cx/snippets/src/main/java/dialogflow/cx/ListTestCaseResults.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2020 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dialogflow.cx;
+
+// [START dialogflow_cx_list_testcase_result_sample]
+
+import com.google.cloud.dialogflow.cx.v3.ListTestCaseResultsRequest;
+import com.google.cloud.dialogflow.cx.v3.ListTestCaseResultsRequest.Builder;
+import com.google.cloud.dialogflow.cx.v3.TestCaseResult;
+import com.google.cloud.dialogflow.cx.v3.TestCasesClient;
+import com.google.cloud.dialogflow.cx.v3.TestCasesSettings;
+import java.io.IOException;
+
+public class ListTestCaseResults {
+
+  public static void main(String[] args) throws IOException {
+    // TODO(developer): Replace these variables before running the sample.
+    String projectId = "my-project-id";
+    String agentId = "my-agent-id";
+    String testId = "my-test-id";
+    String location = "my-location";
+    listTestCaseResults(projectId, agentId, testId, location);
+  }
+
+  public static void listTestCaseResults(
+      String projectId, String agentId, String testId, String location) throws IOException {
+    String parent =
+        "projects/"
+            + projectId
+            + "/locations/"
+            + location
+            + "/agents/"
+            + agentId
+            + "/testCases/"
+            + testId;
+
+    Builder req = ListTestCaseResultsRequest.newBuilder();
+
+    req.setParent(parent);
+    req.setFilter("environment=draft");
+
+    TestCasesSettings testCasesSettings =
+        TestCasesSettings.newBuilder()
+            .setEndpoint(location + "-dialogflow.googleapis.com:443")
+            .build();
+    TestCasesClient client = TestCasesClient.create(testCasesSettings);
+
+    for (TestCaseResult element : client.listTestCaseResults(req.build()).iterateAll()) {
+      System.out.println(element);
+    }
+  }
+}
+// [END dialogflow_cx_list_testcase_result_sample]

dialogflow-cx/snippets/src/test/java/dialogflow/cx/ListTestCaseResultsIT.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2021 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package dialogflow.cx;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.PrintStream;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+public class ListTestCaseResultsIT {
+
+  private static String PROJECT_ID = System.getenv().get("GOOGLE_CLOUD_PROJECT");
+  private static String agentId = "1499b8e1-ab7d-43fd-9b08-30ee57194fc1";
+  private static String testId = "694a5447-6c40-4752-944e-e3e70580b273";
+  private static String location = "global";
+
+  private ByteArrayOutputStream stdOut;
+  private static PrintStream originalOut;
+
+  @Before
+  public void setUp() throws IOException {
+    originalOut = System.out;
+    stdOut = new ByteArrayOutputStream();
+    System.setOut(new PrintStream(stdOut));
+  }
+
+  @After
+  public void tearDown() throws IOException {
+    System.setOut(originalOut);
+  }
+
+  @Test
+  public void testListTestCaseResults() throws IOException {
+    ListTestCaseResults.listTestCaseResults(PROJECT_ID, agentId, testId, location);
+    assertThat(stdOut.toString()).contains(testId);
+  }
+}