added carriage return

src/test/java/gov/usgs/earthquake/nshmp/model/NshmTestUtils.java

@@ -10,6 +10,7 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.util.Arrays;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
@@ -28,6 +29,7 @@ import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 
 import gov.usgs.earthquake.nshmp.NamedLocation;
+import gov.usgs.earthquake.nshmp.Text;
 import gov.usgs.earthquake.nshmp.calc.CalcConfig;
 import gov.usgs.earthquake.nshmp.calc.Hazard;
 import gov.usgs.earthquake.nshmp.calc.HazardCalcs;
@@ -35,7 +37,6 @@ import gov.usgs.earthquake.nshmp.calc.Site;
 import gov.usgs.earthquake.nshmp.data.XySequence;
 import gov.usgs.earthquake.nshmp.geo.Location;
 import gov.usgs.earthquake.nshmp.gmm.Imt;
-
 import io.swagger.v3.core.util.Yaml;
 
 /**
@@ -101,7 +102,9 @@ class NshmTestUtils {
   static void writeExpecteds(NshmModel nshmModel, Optional<Path> dataPath) throws IOException {
     for (NamedLocation location : nshmModel.nshm.locations()) {
       Map<String, XySequence> xyMap = generateActual(nshmModel, location);
-      String json = GSON.toJson(xyMap);
+      String json = new StringBuilder(GSON.toJson(xyMap))
+          .append(Text.NEWLINE)
+          .toString();
       writeExpected(nshmModel.nshm, location, json, dataPath);
     }
   }
@@ -164,8 +167,10 @@ class NshmTestUtils {
 
     Map<String, XySequence> xyMap = hazard.curves().entrySet().stream()
         .collect(Collectors.toMap(
-            e -> e.getKey().toString(),
-            Entry::getValue));
+            e -> e.getKey().name(),
+            Entry::getValue,
+            (o1, o2) -> o1,
+            LinkedHashMap::new)); // preserve IMT enum order
 
     return xyMap;
   }