diff --git a/src/test/java/com/example/parser/FlowableExcelMapperTest.java b/src/test/java/com/example/parser/FlowableExcelMapperTest.java
index d002fd8..edffce2 100644
--- a/src/test/java/com/example/parser/FlowableExcelMapperTest.java
+++ b/src/test/java/com/example/parser/FlowableExcelMapperTest.java
@@ -6,8 +6,6 @@ import org.junit.jupiter.api.TestInstance;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.Arguments;
 import org.junit.jupiter.params.provider.MethodSource;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 
@@ -23,8 +21,6 @@ class FlowableExcelMapperTest {
     @Autowired
     private FlowableExcelMapper flowableExcelMapper;
 
-    protected static final Logger logger = LoggerFactory.getLogger(FlowableExcelMapperTest.class);
-
 
     public boolean isSubset(JsonNode root, JsonNode test) {
         // If test is null, it is always a subset of root
@@ -71,7 +67,7 @@ class FlowableExcelMapperTest {
                     rootValue = root.get(fieldName);
                 }
                 if (testValue.isTextual() && "__N_A".equals(testValue.asText())) {
-                    if (rootValue != null && !rootValue.isNull()) {
+                    if (root != null && root.has(fieldName)) {
                         return false;
                     }
                     continue;
@@ -105,9 +101,8 @@ class FlowableExcelMapperTest {
     public void excelMapperTestOk(JsonNode row) {
         JsonNode root = row.get("root");
         JsonNode test = row.get("test");
-        logger.info("{}root={}{}test={}", System.lineSeparator(), root, System.lineSeparator(), test);
         Assertions.assertThat(isSubset(root, test))
-                .withFailMessage(System.lineSeparator() + "root=" + root + System.lineSeparator() + "test=" + test).isTrue();
+                .withFailMessage(System.lineSeparator() + "test :" + test + System.lineSeparator() + "root :" + root).isTrue();
     }
 
     protected Stream<Arguments> excelMapperTestFail() {
@@ -118,8 +113,7 @@ class FlowableExcelMapperTest {
     public void excelMapperTestFail(JsonNode row) {
         JsonNode root = row.get("root");
         JsonNode test = row.get("test");
-        logger.info("{}root={}{}test={}", System.lineSeparator(), root, System.lineSeparator(), test);
         Assertions.assertThat(isSubset(root, test))
-                .withFailMessage(System.lineSeparator() + "root=" + root + System.lineSeparator() + "test=" + test).isFalse();
+                .withFailMessage(System.lineSeparator() + "test :" + test + System.lineSeparator() + "root :" + root).isFalse();
     }
 }
diff --git a/src/test/resources/flowableExcelMapperTestData_fail.xlsx b/src/test/resources/flowableExcelMapperTestData_fail.xlsx
index 498685b..7b46a9b 100644
Binary files a/src/test/resources/flowableExcelMapperTestData_fail.xlsx and b/src/test/resources/flowableExcelMapperTestData_fail.xlsx differ