improve test coverage

Author: eaxdev

src/test/java/io/github/eaxdev/jsonsql4j/query/DeleteTest.java

@@ -1,11 +1,13 @@
 package io.github.eaxdev.jsonsql4j.query;
 
 import io.github.eaxdev.jsonsql4j.TestUtil;
+import io.github.eaxdev.jsonsql4j.exception.JsonSQL4JParseException;
 import io.github.eaxdev.jsonsql4j.query.delete.DeleteQuery;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
 
 /**
  * @author eaxdev
@@ -36,4 +38,12 @@ void shouldGetSelectWithCriteria() {
         assertEquals("DELETE FROM schema.test WHERE (field3 = 5 AND field4 = 3)", deleteQuery.getQuery());
     }
 
+    @Test
+    @DisplayName("Should get error when json is invalid")
+    void shouldGetErrorWhenJsonIsInvalid() {
+        JsonSQL4JParseException jsonSQL4JParseException = assertThrows(JsonSQL4JParseException.class,
+                () -> new DeleteQuery("{\"invalid:\" \"json\"}"));
+        assertEquals("Can not parse json query: [{\"invalid:\" \"json\"}]",
+                jsonSQL4JParseException.getMessage());
+    }
 }