Also test the coordinate values when testing the bounds

Author: Tara Drwenski

cdm-test/src/test/java/ucar/nc2/iosp/grib/TestIntervalsTimeCoords2D.java

@@ -57,6 +57,7 @@
 @Category(NeedsCdmUnitTest.class)
 public class TestIntervalsTimeCoords2D {
   private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+  private static final double TOLERANCE = 1e-6;
 
   @Parameterized.Parameters(name = "{0}")
   public static Collection<Object[]> getTestParameters() throws IOException {
@@ -113,19 +114,26 @@ public void checkTimeIntervalCoordinates() throws Exception {
       Variable interval = best.findVariableLocal(dimBounds);
       assertThat(interval != null).isTrue();
 
+      Variable coordinate = best.findVariableLocal(dim.getShortName());
+      assertThat(coordinate != null).isTrue();
+
       Array data = interval.read();
       IndexIterator iter = data.getIndexIterator();
+      Array coordinateData = coordinate.read();
+      IndexIterator coordinateIter = coordinateData.getIndexIterator();
       int idx = 0;
       while (iter.hasNext()) {
         int start = iter.getIntNext();
         int end = iter.getIntNext();
+        double coordinateValue = coordinateIter.getDoubleNext();
         if (start != bounds[idx][0] || end != bounds[idx][1]) {
           logger.error("bounds " + interval.getFullName() + " for file " + filename + ", parameter " + var.getFullName()
               + " failed");
           logger.error("interval " + start + " - " + end + " known " + bounds[idx][0] + " - " + bounds[idx][0]);
         }
         assertThat(start).isEqualTo(bounds[idx][0]);
         assertThat(end).isEqualTo(bounds[idx][1]);
+        assertThat(coordinateValue).isWithin(TOLERANCE).of((start + end) / 2.0);
         idx++;
       }