fix tests

Signed-off-by: Jialiang Liang <jiallian@amazon.com>

Author: RyanL1997

integ-test/src/test/java/org/opensearch/sql/calcite/remote/CalcitePPLHighlightIT.java

@@ -30,7 +30,7 @@ public void init() throws Exception {
   }
 
   @Test
-  public void testHighlightWithWildcardFields() throws IOException {
+  public void testHighlightWildcardFieldsPresent() throws IOException {
     JSONObject result =
         executeQueryWithHighlight(
             "search source=" + TEST_INDEX_ACCOUNT + " \\\"Street\\\"",
@@ -58,7 +58,7 @@ public void testHighlightWithWildcardFields() throws IOException {
   }
 
   @Test
-  public void testHighlightWithSpecificField() throws IOException {
+  public void testHighlightSpecificFieldOnly() throws IOException {
     JSONObject result =
         executeQueryWithHighlight(
             "search source=" + TEST_INDEX_ACCOUNT + " \\\"Street\\\"",
@@ -86,7 +86,7 @@ public void testHighlightWithSpecificField() throws IOException {
   }
 
   @Test
-  public void testHighlightWithCustomTags() throws IOException {
+  public void testHighlightCustomTagsApplied() throws IOException {
     JSONObject result =
         executeQueryWithHighlight(
             "search source=" + TEST_INDEX_ACCOUNT + " \\\"Street\\\"",
@@ -114,15 +114,15 @@ public void testHighlightWithCustomTags() throws IOException {
   }
 
   @Test
-  public void testNoHighlightWhenNotRequested() throws IOException {
+  public void testHighlightOmittedWhenNotRequested() throws IOException {
     JSONObject result =
         executeQueryNoHighlight("search source=" + TEST_INDEX_ACCOUNT + " \\\"Street\\\"");
 
     assertFalse("Should not have highlights when not requested", result.has("highlights"));
   }
 
   @Test
-  public void testHighlightWithPipedFilter() throws IOException {
+  public void testHighlightAlignedAfterPipedFilter() throws IOException {
     JSONObject result =
         executeQueryWithHighlight(
             "search source=" + TEST_INDEX_ACCOUNT + " \\\"Street\\\" | where age > 30",
@@ -135,7 +135,7 @@ public void testHighlightWithPipedFilter() throws IOException {
   }
 
   @Test
-  public void testExplainWithHighlight() throws IOException {
+  public void testExplainContainsHighlightClause() throws IOException {
     Request request = new Request("POST", "/_plugins/_ppl/_explain");
     request.setJsonEntity(
         String.format(

protocol/src/test/java/org/opensearch/sql/protocol/response/format/SimpleJsonResponseFormatterTest.java

@@ -185,7 +185,7 @@ void formatErrorPretty() {
   }
 
   @Test
-  void formatResponseWithHighlights() {
+  void testFormatResponseHighlightsPresent() {
     QueryResult response =
         new QueryResult(
             schema,
@@ -208,7 +208,7 @@ void formatResponseWithHighlights() {
   }
 
   @Test
-  void formatResponseWithoutHighlightsOmitsField() {
+  void testFormatResponseHighlightsOmittedWhenAbsent() {
     QueryResult response =
         new QueryResult(
             schema,