Add tests for opening a ncml dataset on S3

tds/src/integrationTests/java/thredds/tds/TestS3Ncml.java

@@ -0,0 +1,53 @@
+package thredds.tds;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import java.nio.charset.StandardCharsets;
+import javax.servlet.http.HttpServletResponse;
+import org.junit.Test;
+import thredds.test.util.TestOnLocalServer;
+
+public class TestS3Ncml {
+  final private static String S3_NCML_PATH = "dodsC/s3-dataset-scan/ncml/";
+
+  @Test
+  public void shouldOpenNcmlOnS3() {
+    final String endpoint = TestOnLocalServer.withHttpPath(S3_NCML_PATH + "testStandalone.ncml.ascii?time");
+    final byte[] content = TestOnLocalServer.getContent(endpoint, HttpServletResponse.SC_OK);
+    final String stringContent = new String(content, StandardCharsets.UTF_8);
+
+    assertThat(stringContent).contains("time[2]");
+    assertThat(stringContent).contains("6, 18");
+  }
+
+  @Test
+  public void shouldOpenNcmlWithOtherExtensionOnS3() {
+    final String endpoint = TestOnLocalServer.withHttpPath(S3_NCML_PATH + "testStandaloneNcml.otherExt.ascii?time");
+    final byte[] content = TestOnLocalServer.getContent(endpoint, HttpServletResponse.SC_OK);
+    final String stringContent = new String(content, StandardCharsets.UTF_8);
+
+    assertThat(stringContent).contains("time[2]");
+    assertThat(stringContent).contains("6, 18");
+  }
+
+  @Test
+  public void shouldOpenAggregationWithRelativePathsOnS3() {
+    final String endpoint = TestOnLocalServer.withHttpPath(S3_NCML_PATH + "nc/namExtract/test_agg.ncml.ascii?time");
+    final byte[] content = TestOnLocalServer.getContent(endpoint, HttpServletResponse.SC_OK);
+    final String stringContent = new String(content, StandardCharsets.UTF_8);
+
+    assertThat(stringContent).contains("time[8]");
+    assertThat(stringContent).contains("3.0, 6.0, 9.0, 12.0, 15.0, 18.0, 21.0, 24.0");
+  }
+
+  @Test
+  public void shouldOpenAggregationWithAbsolutePathsOnS3() {
+    final String endpoint =
+        TestOnLocalServer.withHttpPath(S3_NCML_PATH + "nc/namExtract/test_agg_absolute_paths.ncml.ascii?time");
+    final byte[] content = TestOnLocalServer.getContent(endpoint, HttpServletResponse.SC_OK);
+    final String stringContent = new String(content, StandardCharsets.UTF_8);
+
+    assertThat(stringContent).contains("time[8]");
+    assertThat(stringContent).contains("3.0, 6.0, 9.0, 12.0, 15.0, 18.0, 21.0, 24.0");
+  }
+}