Added forward class declaration sequence diagram test case

tests/t20022/.clang-uml

@@ -0,0 +1,14 @@
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t20022_sequence:
+    type: sequence
+    glob:
+      - ../../tests/t20022/t20022.cc
+    include:
+      namespaces:
+        - clanguml::t20022
+    using_namespace:
+      - clanguml::t20022
+    start_from:
+      - function: "clanguml::t20022::tmain()"

tests/t20022/t20022.cc

@@ -0,0 +1,37 @@
+#include <memory>
+
+namespace clanguml {
+namespace t20022 {
+class B;
+
+class A {
+public:
+    A(std::unique_ptr<B> b);
+
+    void a();
+
+    std::unique_ptr<B> b_;
+};
+
+class B {
+public:
+    void b() { }
+};
+
+A::A(std::unique_ptr<B> b)
+    : b_{std::move(b)}
+{
+}
+
+void A::a() { b_->b(); }
+
+int tmain()
+{
+    A a{std::make_unique<B>()};
+
+    a.a();
+
+    return 0;
+}
+}
+}

tests/t20022/test_case.h

@@ -0,0 +1,43 @@
+/**
+ * tests/t20022/test_case.h
+ *
+ * Copyright (c) 2021-2022 Bartek Kryza <bkryza@gmail.com>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+TEST_CASE("t20022", "[test-case][sequence]")
+{
+    auto [config, db] = load_config("t20022");
+
+    auto diagram = config.diagrams["t20022_sequence"];
+
+    REQUIRE(diagram->name == "t20022_sequence");
+
+    auto model = generate_sequence_diagram(*db, diagram);
+
+    REQUIRE(model->name() == "t20022_sequence");
+
+    auto puml = generate_sequence_puml(diagram, *model);
+    AliasMatcher _A(puml);
+
+    REQUIRE_THAT(puml, StartsWith("@startuml"));
+    REQUIRE_THAT(puml, EndsWith("@enduml\n"));
+
+    // Check if all calls exist
+    REQUIRE_THAT(puml, HasCall(_A("tmain()"), _A("A"), "a()"));
+    REQUIRE_THAT(puml, HasCall(_A("A"), _A("B"), "b()"));
+
+    save_puml(
+        "./" + config.output_directory() + "/" + diagram->name + ".puml", puml);
+}

tests/test_cases.cc

@@ -268,6 +268,7 @@ using namespace clanguml::test::matchers;
 #include "t20019/test_case.h"
 #include "t20020/test_case.h"
 #include "t20021/test_case.h"
+#include "t20022/test_case.h"
 
 ///
 /// Package diagram tests

tests/test_cases.yaml

@@ -211,6 +211,9 @@ test_cases:
     - name: t20021
       title: Loop statements sequence diagram test case
       description:
+    - name: t20022
+      title: Forward class declaration sequence diagram test case
+      description:
   Package diagrams:
     - name: t30001
       title: Basic package diagram test case

util/generate_test_case.py

@@ -56,8 +56,8 @@ CLASS_DIAGRAM_TEST_CASE_EXAMPLES = """
 
 SEQUENCE_DIAGRAM_TEST_CASE_EXAMPLES = """
     // Check if all calls exist
-    //REQUIRE_THAT(puml, HasCall("A", "log_result"));
-    //REQUIRE_THAT(puml, HasCallWithResponse("B", "A", "add3"));
+    //REQUIRE_THAT(puml, HasCall(_A("tmain()"), _A("A"), "a()"));
+    //REQUIRE_THAT(puml, HasCall(_A("A"), "a()"));
 """
 
 PACKAGE_DIAGRAM_TEST_CASE_EXAMPLES = """