Entities redesign and a few ERM features

* Made most Handlers derived from CHandlerBase and moved service API there.
* Declared existing Entity APIs.
* Added basic script context caching
* Started Lua script module
* Started Lua spell effect API
* Started script state persistence
* Started battle info callback binding
* CommitPackage removed
* Extracted spells::Caster to own header; Expanded Spell API.
* implemented !!MC:S, !!FU:E, !!FU:P, !!MA, !!VR:H, !!VR:C
* !!BU:C, !!BU:E, !!BU:G, !!BU:M implemented
* Allow use of "MC:S@varName@" to declare normal variable (technically v-variable with string key)
* Re-enabled VERM macros.
* !?GM0 added
* !?TM implemented
* Added !!MF:N
* Started !?OB, !!BM, !!HE, !!OW, !!UN
* Added basic support of w-variables
* Added support for ERM indirect variables
* Made !?FU regular trigger
* !!re (ERA loop receiver) implemented
* Fixed ERM receivers with zero args.

test/scripting/ScriptFixture.cpp

@@ -0,0 +1,92 @@
+/*
+ * ScriptFixture.cpp, part of VCMI engine
+ *
+ * Authors: listed in file AUTHORS in main folder
+ *
+ * License: GNU General Public License v2.0 or later
+ * Full text of license available in license.txt file, in main folder
+ *
+ */
+#include "StdInc.h"
+
+#include "ScriptFixture.h"
+
+namespace test
+{
+using namespace ::testing;
+using namespace ::scripting;
+
+ScriptFixture::ScriptFixture() =  default;
+
+ScriptFixture::~ScriptFixture() = default;
+
+void ScriptFixture::loadScriptFromFile(const std::string & path)
+{
+	JsonNode scriptConfig(JsonNode::JsonType::DATA_STRUCT);
+	scriptConfig["source"].String() = path;
+	loadScript(scriptConfig);
+}
+
+void ScriptFixture::loadScript(const JsonNode & scriptConfig)
+{
+	subject = VLC->scriptHandler->loadFromJson(&loggerMock, "core", scriptConfig, "test");
+
+	GTEST_ASSERT_NE(subject, nullptr);
+
+	context = subject->createContext(&environmentMock);
+
+	EXPECT_CALL(*pool, getContext(Eq(subject.get()))).WillRepeatedly(Return(context));
+}
+
+void ScriptFixture::loadScript(ModulePtr module, const std::string & scriptSource)
+{
+	subject = std::make_shared<ScriptImpl>(VLC->scriptHandler);
+
+	subject->host = module;
+	subject->sourceText = scriptSource;
+	subject->identifier = "test";
+	subject->compile(&loggerMock);
+
+	context = subject->createContext(&environmentMock);
+
+	EXPECT_CALL(*pool, getContext(Eq(subject.get()))).WillRepeatedly(Return(context));
+}
+
+void ScriptFixture::loadScript(ModulePtr module, const std::vector<std::string> & scriptSource)
+{
+	std::string source = boost::algorithm::join(scriptSource, "\n");
+
+	loadScript(module, source);
+}
+
+void ScriptFixture::setUp()
+{
+	pool = std::make_shared<PoolMock>();
+
+	EXPECT_CALL(environmentMock, battle()).WillRepeatedly(Return(&binfoMock));
+	EXPECT_CALL(environmentMock, game()).WillRepeatedly(Return(&infoMock));
+	EXPECT_CALL(environmentMock, logger()).WillRepeatedly(Return(&loggerMock));
+	EXPECT_CALL(environmentMock, eventBus()).WillRepeatedly(Return(&eventBus));
+	EXPECT_CALL(environmentMock, services()).WillRepeatedly(Return(&servicesMock));
+}
+
+JsonNode ScriptFixture::runClientServer(const JsonNode & scriptState)
+{
+	context->run(scriptState);
+	return context->saveState();
+}
+
+JsonNode ScriptFixture::runServer(const JsonNode & scriptState)
+{
+	context->run(&serverMock, scriptState);
+	return context->saveState();
+}
+
+JsonNode ScriptFixture::runScript(ModulePtr module, const std::string & scriptSource, const JsonNode & scriptState)
+{
+	loadScript(module, scriptSource);
+	return runClientServer(scriptState);
+}
+
+
+}