Updated test cases documentation

docs/test_cases/t30002.md

@@ -0,0 +1,44 @@
+# t30002 - Package dependency test case
+## Config
+```yaml
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t30002_package:
+    type: package
+    glob:
+      - ../../tests/t30002/t30002.cc
+    include:
+      namespaces:
+        - clanguml::t30002
+    exclude:
+      namespaces:
+        - clanguml::t30002::detail
+    using_namespace:
+      - clanguml::t30002
+    plantuml:
+      before:
+        - "' t30002 test package diagram"
+```
+## Source code
+File t30002.cc
+```cpp
+#include <memory>
+
+namespace clanguml {
+namespace t30002 {
+namespace A::AA::AAA {
+struct CA {
+};
+}
+namespace B::BB::BBB {
+struct CBA {
+    A::AA::AAA::CA *ca_;
+};
+}
+} // namespace t30002
+} // namespace clanguml
+
+```
+## Generated UML diagrams
+![t30002_package](./t30002_package.png "Package dependency test case")