Updated test cases documentation

docs/test_cases/t20014.md

@@ -17,7 +17,33 @@ diagrams:
       - function: "clanguml::t20014::tmain()"
 ```
 ## Source code
-File t20014.cc
+File `tests/t20014/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; }
+
+}
+}
+```
+File `tests/t20014/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 `tests/t20014/t20014.cc`
 ```cpp
 #include "include/t20014.h"
 #include "include/t20014_b.h"
@@ -43,39 +69,77 @@ int tmain()
 }
 }
 ```
-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; }
-
-}
-}
-```
-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
+File `tests/t20014/t20014_c.cc`
 ```cpp
 #include "include/t20014_c.h"
 
 namespace clanguml {
 namespace t20014 {
 
+}
+}
+```
+File `tests/t20014/include/t20014.h`
+```cpp
+#pragma once
+
+namespace clanguml {
+namespace t20014 {
+
+int tmain();
+
+}
+}
+```
+File `tests/t20014/include/t20014_b.h`
+```cpp
+#pragma once
+
+#include "t20014_a.h"
+
+namespace clanguml {
+namespace t20014 {
+
+struct B {
+    int b1(int i, int);
+    int b2(int i, int);
+
+    A a_;
+};
+
+}
+}
+```
+File `tests/t20014/include/t20014_c.h`
+```cpp
+#pragma once
+
+namespace clanguml {
+namespace t20014 {
+
+template <typename T, typename F> struct C {
+    F c1(F i, F j) { return c_.b1(i, j); }
+
+    F c2(F i, F j) { return c_.b2(i, j); }
+
+    T c_;
+};
+
+}
+}
+```
+File `tests/t20014/include/t20014_a.h`
+```cpp
+#pragma once
+
+namespace clanguml {
+namespace t20014 {
+
+struct A {
+    int a1(int i, int j);
+    int a2(int i, int j);
+};
+
 }
 }
 ```