Updated test case documentation tool to handle multifile test cases

docs/test_cases.md

@@ -32,6 +32,7 @@
  * [t00031](./test_cases/t00031.md) - PlantUML style decorator test case
  * [t00032](./test_cases/t00032.md) - Class template with template base classes test case
  * [t00033](./test_cases/t00033.md) - Nested template instantiation dependency test case
+ * [t00034](./test_cases/t00034.md) - Template metaprogramming type function test case
 ## Sequence diagrams
  * [t20001](./test_cases/t20001.md) - Basic sequence diagram
 ## Configuration diagrams

docs/test_cases/t00034.md

@@ -0,0 +1,75 @@
+# t00034 - Template metaprogramming type function test case
+## Config
+```yaml
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t00034_class:
+    type: class
+    glob:
+      - ../../tests/t00034/t00034.cc
+    using_namespace:
+      - clanguml::t00034
+    include:
+      namespaces:
+        - clanguml::t00034
+
+```
+## Source code
+File t00034.cc
+```cpp
+#include <type_traits>
+
+namespace clanguml {
+//
+// Based on https://github.com/facebook/folly/blob/master/folly/Unit.h
+//
+namespace t00034 {
+
+struct Void {
+    constexpr bool operator==(const Void & /* unused */) const { return true; }
+    constexpr bool operator!=(const Void & /* unused */) const { return false; }
+};
+
+constexpr Void void_t{};
+
+template <typename T> struct lift_void {
+    using type = T;
+};
+
+template <> struct lift_void<void> {
+    using type = Void;
+};
+
+//
+// TODO: This is a shortcoming of libclang which parses the type of lift_void_t
+// alias as unexposed, i.e. no actual reference to T can be inferred without
+// manually parsing the string 'typename lift_void<T>::type'
+// For now, this test validates that the visitor does not crash
+//
+template <typename T> using lift_void_t = typename lift_void<T>::type;
+
+template <typename T> struct drop_void {
+    using type = T;
+};
+
+template <> struct drop_void<Void> {
+    using type = void;
+};
+
+template <typename T> using drop_void_t = typename drop_void<T>::type;
+
+struct A {
+};
+
+struct R {
+    lift_void_t<A> *la;
+    lift_void_t<void> *lv;
+};
+
+} // namespace t00034
+} // namespace clanguml
+
+```
+## Generated UML diagrams
+![t00034_class](./t00034_class.png "Template metaprogramming type function test case")

tests/test_cases.yaml

@@ -96,6 +96,9 @@ test_cases:
     - name: t00033
       title: Nested template instantiation dependency test case
       description:
+    - name: t00034
+      title: Template metaprogramming type function test case
+      description:
   Sequence diagrams:
     - name: t20001
       title: Basic sequence diagram