add tests for EbmlID usage

CMakeLists.txt

@@ -5,6 +5,7 @@ project(ebml VERSION 2.0.0)
 option(DISABLE_PKGCONFIG "Disable PkgConfig module generation" OFF)
 option(DISABLE_CMAKE_CONFIG "Disable CMake package config module generation" OFF)
 option(BUILD_SHARED_LIBS "Build libebml as a shared library" OFF)
+option(BUILD_TESTING "Build tests" OFF)
 
 include(GNUInstallDirs)
 
@@ -98,6 +99,15 @@ if(NOT BUILD_SHARED_LIBS)
   target_compile_definitions(ebml PUBLIC EBML_STATIC_DEFINE)
 endif()
 
+if (BUILD_TESTING)
+  enable_testing()
+
+  add_executable(test_id test/test_id.cxx)
+  target_link_libraries(test_id PUBLIC ebml)
+  add_test(test_id test_id)
+endif(BUILD_TESTING)
+
+
 install(TARGETS ebml
   EXPORT EBMLTargets
   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}

ebml/EbmlElement.h

@@ -121,6 +121,8 @@ extern const EbmlSemanticContext Context_EbmlGlobal;
 #define DEFINE_EBML_CLASS_GLOBAL(x,id,idl,name)            DEFINE_xxx_CLASS_GLOBAL(x,id,idl,name,GetEbmlGlobal_Context)
 #define DEFINE_EBML_CLASS_ORPHAN(x,id,idl,name)            DEFINE_xxx_CLASS_ORPHAN(x,id,idl,name,GetEbmlGlobal_Context)
 #define DEFINE_EBML_UINTEGER_DEF(x,id,idl,parent,name,val) DEFINE_xxx_UINTEGER_DEF(x,id,idl,parent,name,GetEbmlGlobal_Context,val)
+#define DEFINE_EBML_STRING(x,id,idl,parent,name)           DEFINE_xxx_STRING(x,id,idl,parent,name,GetEbmlGlobal_Context)
+#define DEFINE_EBML_UINTEGER(x,id,idl,parent,name)         DEFINE_xxx_UINTEGER(x,id,idl,parent,name,GetEbmlGlobal_Context)
 #define DEFINE_EBML_STRING_DEF(x,id,idl,parent,name,val)   DEFINE_xxx_STRING_DEF(x,id,idl,parent,name,GetEbmlGlobal_Context,val)
 #define DEFINE_EBML_BINARY_CONS(x,id,idl,parent,name)      DEFINE_xxx_CLASS_CONS(x,id,idl,parent,name,GetEbmlGlobal_Context)
 

test/test_id.cxx

@@ -0,0 +1,27 @@
+// Copyright © 2023 Steve Lhomme.
+// SPDX-License-Identifier: ISC
+
+#include <ebml/EbmlId.h>
+
+using namespace libebml;
+
+int main(void)
+{
+    constexpr binary buf[4] = { 0x12, 0x34, 0x56, 0x78 };
+    EbmlId frombuf(buf, 4);
+
+    EbmlId fromint(0x12345678, 4);
+
+    EbmlId copy(fromint);
+    binary read[4];
+    copy.Fill(read);
+    if (read[0] != 0x12 || read[1] != 0x34 || read[2] != 0x56 || read[3] != 0x78)
+        return 1;
+
+    EbmlId eq = fromint;
+    eq.Fill(read);
+    if (read[0] != 0x12 || read[1] != 0x34 || read[2] != 0x56 || read[3] != 0x78)
+        return 1;
+
+    return 0;
+}