diff --git a/builder/src/test/java/net/kemitix/checkstyle/ruleset/builder/DefaultReadmeIndexBuilderTest.java b/builder/src/test/java/net/kemitix/checkstyle/ruleset/builder/DefaultReadmeIndexBuilderTest.java
new file mode 100644
index 0000000..535fb4d
--- /dev/null
+++ b/builder/src/test/java/net/kemitix/checkstyle/ruleset/builder/DefaultReadmeIndexBuilderTest.java
@@ -0,0 +1,65 @@
+package net.kemitix.checkstyle.ruleset.builder;
+
+import lombok.val;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link DefaultReadmeIndexBuilder}.
+ *
+ * @author Paul Campbell (pcampbell@kemitix.net)
+ */
+public class DefaultReadmeIndexBuilderTest {
+
+    private DefaultReadmeIndexBuilder indexBuilder;
+
+    private RulesProperties rulesProperties;
+
+    @Before
+    public void setUp() throws Exception {
+        rulesProperties = new RulesProperties();
+        indexBuilder = new DefaultReadmeIndexBuilder(rulesProperties);
+    }
+
+    @Test
+    public void createIndex() throws Exception {
+        //given
+        final List<String> expectedIndexItems = new ArrayList<>(6);
+        expectedIndexItems.add("[a](#a)|layout|checkstyle|Yes|");
+        expectedIndexItems.add("[b](#b)|naming|sevntu||No");
+        expectedIndexItems.add("[c](#c)|javadoc|checkstyle|Yes|");
+        expectedIndexItems.add("[d](#d)|tweaks|checkstyle|Yes|");
+        expectedIndexItems.add("[e](#e)|complexity|checkstyle|Yes|");
+        expectedIndexItems.add("[f](#f)|unspecified|checkstyle|Yes|");
+        val rules = rulesProperties.getRules();
+        rules.add(rule("a", RuleLevel.LAYOUT, RuleSource.CHECKSTYLE, true, true));
+        rules.add(rule("b", RuleLevel.NAMING, RuleSource.SEVNTU, false, false));
+        rules.add(rule("c", RuleLevel.JAVADOC, RuleSource.CHECKSTYLE, true, true));
+        rules.add(rule("d", RuleLevel.TWEAKS, RuleSource.CHECKSTYLE, true, true));
+        rules.add(rule("e", RuleLevel.COMPLEXITY, RuleSource.CHECKSTYLE, true, true));
+        rules.add(rule("f", RuleLevel.UNSPECIFIED, RuleSource.CHECKSTYLE, true, true));
+        //when
+        val index = indexBuilder.build()
+                                .split("\n");
+        //then
+        assertThat(index).containsExactlyElementsOf(expectedIndexItems);
+    }
+
+    private Rule rule(
+            final String name, final RuleLevel level, final RuleSource source, final boolean enabled,
+            final boolean supressible
+                     ) {
+        val rule = new Rule();
+        rule.setName(name);
+        rule.setLevel(level);
+        rule.setSource(source);
+        rule.setEnabled(enabled);
+        rule.setInsuppressible(!supressible);
+        return rule;
+    }
+}