diff --git a/compiler/plugin/maven/src/test/resources/identityextend/inter/test1/file-test1-a.yang b/compiler/plugin/maven/src/test/resources/identityextend/inter/test1/file-test1-a.yang
new file mode 100644
index 0000000..d1ba8c2
--- /dev/null
+++ b/compiler/plugin/maven/src/test/resources/identityextend/inter/test1/file-test1-a.yang
@@ -0,0 +1,21 @@
+module file-test1-a {
+    yang-version 1;
+    namespace
+      "http://test1.org/ns/file/a";
+    prefix t1fa;
+
+    revision "2009-11-21" {
+      description
+        "sample module in progress.";
+    }
+
+    identity id1;
+
+    identity id2 {
+       base "id1";
+    }
+
+    identity id3 {
+       base "id1";
+    }
+}
diff --git a/compiler/plugin/maven/src/test/resources/identityextend/inter/test1/file-test1-b.yang b/compiler/plugin/maven/src/test/resources/identityextend/inter/test1/file-test1-b.yang
new file mode 100644
index 0000000..31e085e
--- /dev/null
+++ b/compiler/plugin/maven/src/test/resources/identityextend/inter/test1/file-test1-b.yang
@@ -0,0 +1,31 @@
+module file-test1-b {
+    yang-version 1;
+    namespace
+      "http://test1.org/ns/file/b";
+    prefix t1fb;
+
+    import file-test1-a {
+        prefix t1fa;
+    }
+
+    revision "2009-11-21" {
+      description
+        "sample module in progress.";
+    }
+
+    identity id4 {
+       base t1fa:id2;
+    }
+
+    identity id5 {
+       base t1fa:id2;
+    }
+
+    identity id6 {
+       base t1fa:id1;
+    }
+
+    identity id7 {
+       base t1fa:id1;
+    }
+}
diff --git a/compiler/plugin/maven/src/test/resources/identityextend/inter/test1/file-test1-c.yang b/compiler/plugin/maven/src/test/resources/identityextend/inter/test1/file-test1-c.yang
new file mode 100644
index 0000000..74e31a6
--- /dev/null
+++ b/compiler/plugin/maven/src/test/resources/identityextend/inter/test1/file-test1-c.yang
@@ -0,0 +1,35 @@
+module file-test1-c {
+    yang-version 1;
+    namespace
+      "http://test1.org/ns/file/c";
+    prefix t1fc;
+
+    import file-test1-a {
+        prefix t1fa;
+    }
+
+    import file-test1-b {
+        prefix t1fb;
+    }
+
+    revision "2009-11-21" {
+      description
+        "sample module in progress.";
+    }
+
+    identity id8 {
+       base t1fa:id1;
+    }
+
+    identity id9 {
+       base t1fa:id1;
+    }
+
+    identity id10 {
+       base t1fb:id4;
+    }
+
+    identity id11 {
+       base t1fb:id4;
+    }
+}