diff --git a/src/test/java/org/onosproject/yangutils/parser/impl/listeners/BitListenerTest.java b/src/test/java/org/onosproject/yangutils/parser/impl/listeners/BitListenerTest.java
new file mode 100644
index 0000000..d741ac3
--- /dev/null
+++ b/src/test/java/org/onosproject/yangutils/parser/impl/listeners/BitListenerTest.java
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2014-2016 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yangutils.parser.impl.listeners;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.core.Is.is;
+import org.junit.Test;
+import org.onosproject.yangutils.datamodel.YangBit;
+import org.onosproject.yangutils.datamodel.YangBits;
+import org.onosproject.yangutils.datamodel.YangDataTypes;
+import org.onosproject.yangutils.datamodel.YangLeaf;
+import org.onosproject.yangutils.datamodel.YangModule;
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.datamodel.YangNodeType;
+import org.onosproject.yangutils.parser.exceptions.ParserException;
+import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
+
+import java.io.IOException;
+import java.util.ListIterator;
+import java.util.Set;
+
+/**
+ * Test cases for bit listener.
+ */
+public class BitListenerTest {
+
+    private final YangUtilsParserManager manager = new YangUtilsParserManager();
+
+    /**
+     * Checks bit statement without position.
+     */
+    @Test
+    public void processBitTypeStatement() throws IOException, ParserException {
+
+        YangNode node = manager.getDataModel("src/test/resources/BitTypeStatement.yang");
+
+        // Check whether the data model tree returned is of type module.
+        assertThat((node instanceof YangModule), is(true));
+
+        // Check whether the node type is set properly to module.
+        assertThat(node.getNodeType(), is(YangNodeType.MODULE_NODE));
+
+        // Check whether the module name is set correctly.
+        YangModule yangNode = (YangModule) node;
+        assertThat(yangNode.getName(), is("Test"));
+
+        ListIterator<YangLeaf> leafIterator = yangNode.getListOfLeaf().listIterator();
+        YangLeaf leafInfo = leafIterator.next();
+
+        assertThat(leafInfo.getLeafName(), is("mybits"));
+        assertThat(leafInfo.getDataType().getDataTypeName(), is("bits"));
+        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.BITS));
+        assertThat(((YangBits) leafInfo.getDataType().getDataTypeExtendedInfo()).getBitsName(),
+                is("mybits"));
+
+        Set<YangBit> bitSet = ((YangBits) leafInfo.getDataType().getDataTypeExtendedInfo()).getBitSet();
+        for (YangBit tmp : bitSet) {
+            if (tmp.getBitName().equals("disable-nagle")) {
+                assertThat(tmp.getPosition(), is(0));
+            } else if (tmp.getBitName().equals("auto-sense-speed")) {
+                assertThat(tmp.getPosition(), is(1));
+            } else if (tmp.getBitName().equals("Ten-Mb-only")) {
+                assertThat(tmp.getPosition(), is(2));
+            }
+        }
+    }
+
+    /**
+     * Checks if enum with same name is not allowed.
+     */
+    @Test(expected = ParserException.class)
+    public void processBitWithDuplicateName() throws IOException, ParserException {
+
+        YangNode node = manager.getDataModel("src/test/resources/BitWithDuplicateName.yang");
+    }
+}
diff --git a/src/test/java/org/onosproject/yangutils/parser/impl/listeners/EnumListenerTest.java b/src/test/java/org/onosproject/yangutils/parser/impl/listeners/EnumListenerTest.java
index 60de57f..7041fdf 100644
--- a/src/test/java/org/onosproject/yangutils/parser/impl/listeners/EnumListenerTest.java
+++ b/src/test/java/org/onosproject/yangutils/parser/impl/listeners/EnumListenerTest.java
@@ -78,4 +78,13 @@
             }
         }
     }
+
+    /**
+     * Checks if enum with same name is not allowed.
+     */
+    @Test(expected = ParserException.class)
+    public void processEnumWithDuplicateName() throws IOException, ParserException {
+
+        YangNode node = manager.getDataModel("src/test/resources/EnumWithDuplicateName.yang");
+    }
 }
diff --git a/src/test/java/org/onosproject/yangutils/parser/impl/listeners/PositionListenerTest.java b/src/test/java/org/onosproject/yangutils/parser/impl/listeners/PositionListenerTest.java
new file mode 100644
index 0000000..7033ddd
--- /dev/null
+++ b/src/test/java/org/onosproject/yangutils/parser/impl/listeners/PositionListenerTest.java
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2014-2016 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.onosproject.yangutils.parser.impl.listeners;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.core.Is.is;
+import org.junit.Test;
+import org.onosproject.yangutils.datamodel.YangBit;
+import org.onosproject.yangutils.datamodel.YangBits;
+import org.onosproject.yangutils.datamodel.YangDataTypes;
+import org.onosproject.yangutils.datamodel.YangLeaf;
+import org.onosproject.yangutils.datamodel.YangModule;
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.datamodel.YangNodeType;
+import org.onosproject.yangutils.parser.exceptions.ParserException;
+import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
+
+import java.io.IOException;
+import java.util.ListIterator;
+import java.util.Set;
+
+/**
+ * Test cases for position listener.
+ */
+public class PositionListenerTest {
+
+    private final YangUtilsParserManager manager = new YangUtilsParserManager();
+
+    /**
+     * Checks explicitly configured value.
+     */
+    @Test
+    public void processPositionStatement() throws IOException, ParserException {
+
+        YangNode node = manager.getDataModel("src/test/resources/PositionStatement.yang");
+
+        // Check whether the data model tree returned is of type module.
+        assertThat((node instanceof YangModule), is(true));
+
+        // Check whether the node type is set properly to module.
+        assertThat(node.getNodeType(), is(YangNodeType.MODULE_NODE));
+
+        // Check whether the module name is set correctly.
+        YangModule yangNode = (YangModule) node;
+        assertThat(yangNode.getName(), is("Test"));
+
+        ListIterator<YangLeaf> leafIterator = yangNode.getListOfLeaf().listIterator();
+        YangLeaf leafInfo = leafIterator.next();
+
+        assertThat(leafInfo.getLeafName(), is("mybits"));
+        assertThat(leafInfo.getDataType().getDataTypeName(), is("bits"));
+        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.BITS));
+        assertThat(((YangBits) leafInfo.getDataType().getDataTypeExtendedInfo()).getBitsName(),
+                is("mybits"));
+
+        Set<YangBit> bitSet = ((YangBits) leafInfo.getDataType().getDataTypeExtendedInfo()).getBitSet();
+        for (YangBit tmp : bitSet) {
+            if (tmp.getBitName().equals("disable-nagle")) {
+                assertThat(tmp.getPosition(), is(0));
+            } else if (tmp.getBitName().equals("auto-sense-speed")) {
+                assertThat(tmp.getPosition(), is(1));
+            } else if (tmp.getBitName().equals("Ten-Mb-only")) {
+                assertThat(tmp.getPosition(), is(2));
+            }
+        }
+    }
+
+    /**
+     * Checks explicit value and auto generated value.
+     */
+    @Test
+    public void processPositionImplicitAndExplicit() throws IOException, ParserException {
+
+        YangNode node = manager.getDataModel("src/test/resources/PositionImplicitAndExplicit.yang");
+
+        // Check whether the data model tree returned is of type module.
+        assertThat((node instanceof YangModule), is(true));
+
+        // Check whether the node type is set properly to module.
+        assertThat(node.getNodeType(), is(YangNodeType.MODULE_NODE));
+
+        // Check whether the module name is set correctly.
+        YangModule yangNode = (YangModule) node;
+        assertThat(yangNode.getName(), is("Test"));
+
+        ListIterator<YangLeaf> leafIterator = yangNode.getListOfLeaf().listIterator();
+        YangLeaf leafInfo = leafIterator.next();
+
+        assertThat(leafInfo.getLeafName(), is("mybits"));
+        assertThat(leafInfo.getDataType().getDataTypeName(), is("bits"));
+        assertThat(leafInfo.getDataType().getDataType(), is(YangDataTypes.BITS));
+        assertThat(((YangBits) leafInfo.getDataType().getDataTypeExtendedInfo()).getBitsName(),
+                is("mybits"));
+
+        Set<YangBit> bitSet = ((YangBits) leafInfo.getDataType().getDataTypeExtendedInfo()).getBitSet();
+        for (YangBit tmp : bitSet) {
+            if (tmp.getBitName().equals("disable-nagle")) {
+                assertThat(tmp.getPosition(), is(0));
+            } else if (tmp.getBitName().equals("auto-sense-speed")) {
+                assertThat(tmp.getPosition(), is(1));
+            } else if (tmp.getBitName().equals("Ten-Mb-only")) {
+                assertThat(tmp.getPosition(), is(2));
+            }
+        }
+    }
+
+    /**
+     * Checks explicit value should not be repeated.
+     */
+    @Test(expected = ParserException.class)
+    public void processPositionDuplication() throws IOException, ParserException {
+
+        YangNode node = manager.getDataModel("src/test/resources/PositionDuplication.yang");
+    }
+
+    /**
+     * Checks explicit or auto generated value should not be repeated.
+     */
+    @Test(expected = ParserException.class)
+    public void processPositionImplicitAndExplicitDuplication() throws IOException, ParserException {
+
+        YangNode node = manager.getDataModel("src/test/resources/PositionImplicitAndExplicitDuplication.yang");
+    }
+
+    /**
+     * Checks if negative value of position is not allowed.
+     */
+    @Test(expected = ParserException.class)
+    public void processPositionNegativeValue() throws IOException, ParserException {
+
+        YangNode node = manager.getDataModel("src/test/resources/PositionNegativeValue.yang");
+    }
+}
diff --git a/src/test/resources/BitTypeStatement.yang b/src/test/resources/BitTypeStatement.yang
new file mode 100644
index 0000000..9d13495
--- /dev/null
+++ b/src/test/resources/BitTypeStatement.yang
@@ -0,0 +1,12 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+     leaf mybits {
+         type bits {
+             bit disable-nagle;
+             bit auto-sense-speed;
+             bit Ten-Mb-only;
+         }
+    }
+}
diff --git a/src/test/resources/BitWithDuplicateName.yang b/src/test/resources/BitWithDuplicateName.yang
new file mode 100644
index 0000000..ed5cc32
--- /dev/null
+++ b/src/test/resources/BitWithDuplicateName.yang
@@ -0,0 +1,12 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+     leaf mybits {
+         type bits {
+             bit disable-nagle;
+             bit disable-nagle;
+             bit Ten-Mb-only;
+         }
+    }
+}
diff --git a/src/test/resources/EnumWithDuplicateName.yang b/src/test/resources/EnumWithDuplicateName.yang
new file mode 100644
index 0000000..d81558f
--- /dev/null
+++ b/src/test/resources/EnumWithDuplicateName.yang
@@ -0,0 +1,14 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+    leaf speed {
+        type enumeration {
+          enum 10m;
+          enum 100m;
+          enum 10m {
+	     value 11;
+          }
+        }
+    }
+}
diff --git a/src/test/resources/PositionDuplication.yang b/src/test/resources/PositionDuplication.yang
new file mode 100644
index 0000000..81eeb16
--- /dev/null
+++ b/src/test/resources/PositionDuplication.yang
@@ -0,0 +1,18 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+     leaf mybits {
+         type bits {
+             bit disable-nagle {
+                 position 0;
+             }
+             bit auto-sense-speed {
+                 position 1;
+             }
+             bit Ten-Mb-only {
+                 position 1;
+             }
+         }
+    }
+}
diff --git a/src/test/resources/PositionImplicitAndExplicit.yang b/src/test/resources/PositionImplicitAndExplicit.yang
new file mode 100644
index 0000000..5be4cbb
--- /dev/null
+++ b/src/test/resources/PositionImplicitAndExplicit.yang
@@ -0,0 +1,15 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+     leaf mybits {
+         type bits {
+             bit disable-nagle;
+             bit auto-sense-speed {
+                 position 1;
+             }
+             bit Ten-Mb-only;
+             }
+         }
+    }
+}
diff --git a/src/test/resources/PositionImplicitAndExplicitDuplication.yang b/src/test/resources/PositionImplicitAndExplicitDuplication.yang
new file mode 100644
index 0000000..30b81ab
--- /dev/null
+++ b/src/test/resources/PositionImplicitAndExplicitDuplication.yang
@@ -0,0 +1,15 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+     leaf mybits {
+         type bits {
+             bit disable-nagle;
+             bit auto-sense-speed {
+                 position 0;
+             }
+             bit Ten-Mb-only;
+             }
+         }
+    }
+}
diff --git a/src/test/resources/PositionNegativeValue.yang b/src/test/resources/PositionNegativeValue.yang
new file mode 100644
index 0000000..60330e0
--- /dev/null
+++ b/src/test/resources/PositionNegativeValue.yang
@@ -0,0 +1,15 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+     leaf mybits {
+         type bits {
+             bit disable-nagle;
+             bit auto-sense-speed {
+                 position -2;
+             }
+             bit Ten-Mb-only;
+             }
+         }
+    }
+}
diff --git a/src/test/resources/PositionStatement.yang b/src/test/resources/PositionStatement.yang
new file mode 100644
index 0000000..76c204d
--- /dev/null
+++ b/src/test/resources/PositionStatement.yang
@@ -0,0 +1,18 @@
+module Test {
+    yang-version 1;
+    namespace http://huawei.com;
+    prefix Ant;
+     leaf mybits {
+         type bits {
+             bit disable-nagle {
+                 position 0;
+             }
+             bit auto-sense-speed {
+                 position 1;
+             }
+             bit Ten-Mb-only {
+                 position 2;
+             }
+         }
+    }
+}