Add smoke tests

Author: jonesbusy

src/test/java/io/jenkins/plugins/jsonpath/JsonPathSmokeTest.java

@@ -0,0 +1,35 @@
+package io.jenkins.plugins.jsonpath;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import com.jayway.jsonpath.Configuration;
+import com.jayway.jsonpath.JsonPath;
+import org.junit.jupiter.api.Test;
+
+public class JsonPathSmokeTest {
+
+    public static class Person {
+        public String name;
+        public int age;
+        public String city;
+    }
+
+    @Test
+    public void smokeTest() throws Exception {
+        String json = "{\"name\":\"John\", \"age\":30, \"city\":\"New York\"}";
+
+        String name = JsonPath.read(json, "$.name");
+        int age = JsonPath.read(json, "$.age");
+        String city = JsonPath.read(json, "$.city");
+
+        assertEquals("John", name);
+        assertEquals(30, age);
+        assertEquals("New York", city);
+
+        Person person =
+                JsonPath.using(Configuration.defaultConfiguration()).parse(json).read("$", Person.class);
+        assertEquals("John", person.name);
+        assertEquals(30, person.age);
+        assertEquals("New York", person.city);
+    }
+}