Added context filter relationships option (#274)

tests/t00078/.clang-uml

@@ -0,0 +1,16 @@
+diagrams:
+  t00078_class:
+    type: class
+    glob:
+      - t00078.cc
+    include:
+      namespaces:
+        - clanguml::t00078
+      context:
+        - match:
+            radius: 1
+            pattern: clanguml::t00078::A
+            relationships:
+              - inheritance
+              - aggregation
+    using_namespace: clanguml::t00078

tests/t00078/t00078.cc

@@ -0,0 +1,22 @@
+namespace clanguml {
+namespace t00078 {
+
+struct Base { };
+
+struct D { };
+struct E { };
+struct A : public Base {
+    D d;
+    E *e;
+};
+
+struct B {
+    A *a;
+};
+
+struct C {
+    A a;
+};
+
+}
+}

tests/t00078/test_case.h

@@ -0,0 +1,36 @@
+/**
+ * tests/t00078/test_case.h
+ *
+ * Copyright (c) 2021-2024 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("t00078")
+{
+    using namespace clanguml::test;
+    using namespace std::string_literals;
+
+    auto [config, db, diagram, model] =
+        CHECK_CLASS_MODEL("t00078", "t00078_class");
+
+    CHECK_CLASS_DIAGRAM(*config, diagram, *model, [](const auto &src) {
+        REQUIRE(IsClass(src, "Base"));
+        REQUIRE(IsClass(src, "A"));
+        REQUIRE(IsClass(src, "C"));
+        REQUIRE(IsClass(src, "D"));
+
+        REQUIRE(!IsClass(src, "B"));
+        REQUIRE(!IsClass(src, "E"));
+    });
+}

tests/test_cases.cc

@@ -551,6 +551,7 @@ void CHECK_INCLUDE_DIAGRAM(const clanguml::config::config &config,
 #endif
 #include "t00076/test_case.h"
 #include "t00077/test_case.h"
+#include "t00078/test_case.h"
 
 ///
 /// Sequence diagram tests

tests/test_cases.yaml

@@ -228,6 +228,9 @@ test_cases:
     - name: t00077
       title: Test case for context diagram with outward direction flag
       description:
+    - name: t00078
+      title: Test case for context diagram with relationships option
+      description:
   Sequence diagrams:
     - name: t20001
       title: Basic sequence diagram test case