diff --git a/dsms-engine-application/src/test/java/com/dsms/common/prometheus/converter/result/QueryDataTypeTest.java b/dsms-engine-application/src/test/java/com/dsms/common/prometheus/converter/result/QueryDataTypeTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..2b3abb35ee1df700c00a4ab7c84dd9220def1b9b
--- /dev/null
+++ b/dsms-engine-application/src/test/java/com/dsms/common/prometheus/converter/result/QueryDataTypeTest.java
@@ -0,0 +1,48 @@
+package com.dsms.common.prometheus.converter.result;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import com.dsms.common.util.PrometheusUtils;
+import com.google.gson.JsonSyntaxException;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+class QueryDataTypeTest {
+
+    @Test
+    void convert() {
+        String positiveVector = "{\"status\":\"success\",\"data\":{\"resultType\":\"vector\",\"result\":[{\"metric\":{},\"value\":[1742977682.864,\"+Inf\"]}]}}";
+        String negativeVector = "{\"status\":\"success\",\"data\":{\"resultType\":\"vector\",\"result\":[{\"metric\":{},\"value\":[1742977682.864,\"-Inf\"]}]}}";
+        String illegalVector = "{\"status\":\"success\",\"data\":{\"resultType\":\"vector\",\"result\":[{\"metric\":{},\"value\":[1742977682.864,\"test\"]}]}}";
+
+        DefaultQueryResult<VectorData> positiveVectorData = PrometheusUtils.convertQueryResultString(positiveVector);
+        DefaultQueryResult<VectorData> negativeVectorData = PrometheusUtils.convertQueryResultString(negativeVector);
+        DefaultQueryResult<VectorData> illegalVectorData = PrometheusUtils.convertQueryResultString(illegalVector);
+
+        assertEquals(Double.POSITIVE_INFINITY, positiveVectorData.getResult().get(0).getDataValue().getValue());
+        assertEquals(Double.NEGATIVE_INFINITY, negativeVectorData.getResult().get(0).getDataValue().getValue());
+        assertEquals(Double.NaN, illegalVectorData.getResult().get(0).getDataValue().getValue());
+
+        String positiveMatrix = "{\"status\":\"success\",\"data\":{\"resultType\":\"matrix\",\"result\":[{\"metric\":{},\"values\":[[1742977682.864,\"+Inf\"]]}]}}";
+        String negativeMatrix = "{\"status\":\"success\",\"data\":{\"resultType\":\"matrix\",\"result\":[{\"metric\":{},\"values\":[[1742977682.864,\"-Inf\"]]}]}}";
+        String illegalMatrix = "{\"status\":\"success\",\"data\":{\"resultType\":\"matrix\",\"result\":[{\"metric\":{},\"values\":[[1742977682.864,\"test\"]]}]}}";
+
+        DefaultQueryResult<MatrixData> positiveMatrixData = PrometheusUtils.convertQueryResultString(positiveMatrix);
+        DefaultQueryResult<MatrixData> negativeMatrixData = PrometheusUtils.convertQueryResultString(negativeMatrix);
+        DefaultQueryResult<MatrixData> illegalMatrixData = PrometheusUtils.convertQueryResultString(illegalMatrix);
+        double[][] positiveMatrixDataQueryResult = positiveMatrixData.getQueryResult();
+        double[][] negativeMatrixDataQueryResult = negativeMatrixData.getQueryResult();
+        double[][] illegalMatrixDataQueryResult = illegalMatrixData.getQueryResult();
+        assertEquals(Double.POSITIVE_INFINITY, positiveMatrixDataQueryResult[0][1]);
+        assertEquals(Double.NEGATIVE_INFINITY, negativeMatrixDataQueryResult[0][1]);
+        assertEquals(Double.NaN, illegalMatrixDataQueryResult[0][1]);
+
+        String noValuesMatrixData = "{\"status\":\"success\",\"data\":{\"resultType\":\"matrix\",\"result\":[{\"metric\":{},\"values1\":[[1742977682.864,\"+Inf\"]]}]}}";
+
+        Assertions.assertThrows(JsonSyntaxException.class, () -> PrometheusUtils.convertQueryResultString(noValuesMatrixData));
+
+        String noValues = "{\"status\":\"success\",\"data\":{\"resultType\":\"vector\",\"result\":[{\"metric\":{},\"values1\":[1742977682.864,\"+Inf\"]}]}}";
+        Assertions.assertThrows(JsonSyntaxException.class, () -> PrometheusUtils.convertQueryResultString(noValues));
+
+    }
+}
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