Updated test case documentation

docs/test_cases/t20014.md

@@ -0,0 +1,96 @@
+# t20014 - Multiple translation units sequence diagram test case
+## Config
+```yaml
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t20014_sequence:
+    type: sequence
+    glob:
+      - ../../tests/t20014/t20014.cc
+      - ../../tests/t20014/t20014_c.cc
+      - ../../tests/t20014/t20014_b.cc
+      - ../../tests/t20014/t20014_a.cc
+    include:
+      namespaces:
+        - clanguml::t20014
+    using_namespace:
+      - clanguml::t20014
+    start_from:
+      - function: "clanguml::t20014::tmain()"
+```
+## Source code
+File t20014_b.cc
+```cpp
+#include "include/t20014_b.h"
+namespace clanguml {
+namespace t20014 {
+
+int B::b1(int i, int j) { return a_.a1(i, j); }
+
+int B::b2(int i, int j) { return a_.a2(i, j); }
+
+}
+}
+```
+File t20014_c.cc
+```cpp
+#include "include/t20014_c.h"
+
+namespace clanguml {
+namespace t20014 {
+
+//template <typename T, typename F> F C<T, F>::c1(F i, F j)
+//{
+//    return c_.b1(i, j);
+//}
+//
+//template <typename T, typename F> F C<T, F>::c2(F i, F j)
+//{
+//    return c_.b2(i, j);
+//}
+
+}
+}
+```
+File t20014.cc
+```cpp
+#include "include/t20014.h"
+#include "include/t20014_b.h"
+#include "include/t20014_c.h"
+
+namespace clanguml {
+namespace t20014 {
+
+void log(const char *msg) { }
+
+int tmain()
+{
+    B b;
+    C<B, int> c;
+
+    b.b1(0, 1);
+    b.b2(1, 2);
+
+    c.c1(2, 3);
+
+    return 0;
+}
+}
+}
+```
+File t20014_a.cc
+```cpp
+#include "include/t20014_a.h"
+namespace clanguml {
+namespace t20014 {
+
+int A::a1(int i, int j) { return i + j; }
+
+int A::a2(int i, int j) { return i - j; }
+
+}
+}
+```
+## Generated UML diagrams
+![t20014_sequence](./t20014_sequence.svg "Multiple translation units sequence diagram test case")