tests/comms: Add some basic tests for ZM::Pipe

tests/CMakeLists.txt

@@ -12,6 +12,7 @@
 include(Catch)
 
 set(TEST_SOURCES
+  zm_comms.cpp
   zm_crypt.cpp
   zm_utils.cpp)
 

tests/zm_comms.cpp

@@ -0,0 +1,63 @@
+/*
+ * This file is part of the ZoneMinder Project. See AUTHORS file for Copyright information
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "catch2/catch.hpp"
+
+#include "zm_comms.h"
+
+TEST_CASE("ZM::Pipe basics") {
+  ZM::Pipe pipe;
+
+  SECTION("setBlocking on non-opened") {
+    REQUIRE(pipe.setBlocking(true) == false);
+    REQUIRE(pipe.setBlocking(false) == false);
+  }
+
+  REQUIRE(pipe.open() == true);
+
+  REQUIRE(pipe.isOpen() == true);
+  REQUIRE(pipe.isClosed() == false);
+  REQUIRE(pipe.getReadDesc() != -1);
+  REQUIRE(pipe.getWriteDesc() != -1);
+
+  SECTION("double open") {
+    REQUIRE(pipe.open() == true); // is this expected?
+  }
+
+  SECTION("close") {
+    REQUIRE(pipe.close() == true);
+
+    REQUIRE(pipe.isOpen() == false);
+    REQUIRE(pipe.isClosed() == true);
+    REQUIRE(pipe.getReadDesc() == -1);
+    REQUIRE(pipe.getWriteDesc() == -1);
+
+    SECTION("double close") {
+      REQUIRE(pipe.close() == true);
+    }
+
+    SECTION("setBlocking on closed") {
+      REQUIRE(pipe.setBlocking(true) == false);
+      REQUIRE(pipe.setBlocking(false) == false);
+    }
+  }
+
+  SECTION("setBlocking") {
+    REQUIRE(pipe.setBlocking(true) == true);
+    REQUIRE(pipe.setBlocking(false) == true);
+  }
+}