Issue #85: Add test for application config.

src/test/java/com/github/mk23/jmxproxy/conf/tests/AppConfigTest.java

@@ -0,0 +1,48 @@
+package com.github.mk23.jmxproxy.conf.tests;
+
+import com.github.mk23.jmxproxy.conf.AppConfig;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import io.dropwizard.util.Duration;
+
+import java.io.IOException;
+
+import java.util.Arrays;
+
+import org.junit.Test;
+
+import static org.hamcrest.core.Is.is;
+import static org.junit.Assert.assertThat;
+
+import static io.dropwizard.testing.FixtureHelpers.fixture;
+
+public class AppConfigTest {
+    private final ObjectMapper om = new ObjectMapper();
+
+    private String asJson(Object object) throws JsonProcessingException {
+        return om.writeValueAsString(object);
+    }
+
+    private String jsonFixture(String filename) throws IOException {
+        return om.writeValueAsString(om.readValue(fixture(filename), JsonNode.class));
+    }
+
+    /* Configuration tests */
+    @Test
+    public void checkValidConfiguration() throws Exception {
+        final AppConfig appConfig = new AppConfig()
+            .setCleanInterval(Duration.milliseconds(12))
+            .setCacheDuration(Duration.seconds(23))
+            .setAccessDuration(Duration.seconds(404276))
+            .setHistorySize(11)
+            .setAllowedEndpoints(Arrays.asList("localhost:1100", "remotehost:2211"));
+
+        final String expectedResult = jsonFixture("fixtures/app_config.json");
+        final String acquiredResult = asJson(appConfig);
+
+        assertThat("valid configuration", acquiredResult, is(expectedResult));
+    }
+}

src/test/resources/fixtures/app_config.json

@@ -0,0 +1,10 @@
+{
+    "cleanInterval": 12,
+    "cacheDuration": 23000,
+    "accessDuration": 404276000,
+    "historySize": 11,
+    "allowedEndpoints": [
+        "localhost:1100",
+        "remotehost:2211"
+    ]
+}