Added support for switch statements in sequence diagrams

tests/t20024/.clang-uml

@@ -0,0 +1,14 @@
+compilation_database_dir: ..
+output_directory: puml
+diagrams:
+  t20024_sequence:
+    type: sequence
+    glob:
+      - ../../tests/t20024/t20024.cc
+    include:
+      namespaces:
+        - clanguml::t20024
+    using_namespace:
+      - clanguml::t20024
+    start_from:
+      - function: "clanguml::t20024::tmain()"

tests/t20024/t20024.cc

@@ -0,0 +1,65 @@
+namespace clanguml {
+namespace t20024 {
+
+enum enum_a { zero = 0, one = 1, two = 2, three = 3 };
+
+enum class colors { red, orange, green };
+
+struct A {
+    int select(enum_a v)
+    {
+        switch (v) {
+        case zero:
+            return a0();
+        case one:
+            return a1();
+        case two:
+            return a2();
+        default:
+            return a3();
+        }
+    }
+
+    int a0() { return 0; }
+    int a1() { return 1; }
+    int a2() { return 2; }
+    int a3() { return 3; }
+};
+
+struct B {
+    void select(colors c)
+    {
+        switch (c) {
+        case colors::red:
+            red();
+            break;
+        case colors::orange:
+            orange();
+            break;
+        case colors::green:
+            green();
+            break;
+        default:
+            grey();
+        }
+    }
+
+    void red() { }
+    void orange() { }
+    void green() { }
+    void grey() { }
+};
+
+int tmain()
+{
+    A a;
+    B b;
+
+    a.select(enum_a::two);
+
+    b.select(colors::green);
+
+    return 0;
+}
+}
+}

tests/t20024/test_case.h

@@ -0,0 +1,51 @@
+/**
+ * tests/t20024/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("t20024", "[test-case][sequence]")
+{
+    auto [config, db] = load_config("t20024");
+
+    auto diagram = config.diagrams["t20024_sequence"];
+
+    REQUIRE(diagram->name == "t20024_sequence");
+
+    auto model = generate_sequence_diagram(*db, diagram);
+
+    REQUIRE(model->name() == "t20024_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"), "select(enum_a)"));
+    REQUIRE_THAT(puml, HasCall(_A("A"), _A("A"), "a0()"));
+    REQUIRE_THAT(puml, HasCall(_A("A"), _A("A"), "a1()"));
+    REQUIRE_THAT(puml, HasCall(_A("A"), _A("A"), "a2()"));
+    REQUIRE_THAT(puml, HasCall(_A("A"), _A("A"), "a3()"));
+
+    REQUIRE_THAT(puml, HasCall(_A("tmain()"), _A("B"), "select(colors)"));
+    REQUIRE_THAT(puml, HasCall(_A("B"), _A("B"), "red()"));
+    REQUIRE_THAT(puml, HasCall(_A("B"), _A("B"), "orange()"));
+    REQUIRE_THAT(puml, HasCall(_A("B"), _A("B"), "green()"));
+
+    save_puml(
+        "./" + config.output_directory() + "/" + diagram->name + ".puml", puml);
+}

tests/test_cases.cc

@@ -270,6 +270,7 @@ using namespace clanguml::test::matchers;
 #include "t20021/test_case.h"
 #include "t20022/test_case.h"
 #include "t20023/test_case.h"
+#include "t20024/test_case.h"
 
 ///
 /// Package diagram tests

tests/test_cases.yaml

@@ -217,6 +217,9 @@ test_cases:
     - name: t20023
       title: Try/catch statement sequence diagram test case
       description:
+    - name: t20024
+      title: Switch statement sequence diagram test case
+      description:
   Package diagrams:
     - name: t30001
       title: Basic package diagram test case