From 5521d5857b122699120fbd749776dea44ffaa35b Mon Sep 17 00:00:00 2001
From: Dimitar Trendafilov <trendafilov.dn@gmail.com>
Date: Mon, 2 Nov 2020 09:06:17 +0200
Subject: Add tests for the AST Interpreter

---
 JSImpl/test/ASTInterpreterTests.cpp | 58 +++++++++++++++++++++++++++++++++++++
 JSImpl/test/Test.make               |  6 ++++
 JSImpl/test/Test.vcxproj            |  2 ++
 JSImpl/test/Test.vcxproj.filters    |  1 +
 4 files changed, 67 insertions(+)
 create mode 100644 JSImpl/test/ASTInterpreterTests.cpp

(limited to 'JSImpl')

diff --git a/JSImpl/test/ASTInterpreterTests.cpp b/JSImpl/test/ASTInterpreterTests.cpp
new file mode 100644
index 0000000..389f53c
--- /dev/null
+++ b/JSImpl/test/ASTInterpreterTests.cpp
@@ -0,0 +1,58 @@
+#include <gtest/gtest.h>
+
+#include <src/CommonTypes.h>
+#include <src/Lexer.h>
+#include <src/Parser.h>
+#include <src/ASTPrinter.h>
+#include <src/ASTInterpreter.h>
+
+struct ASTInterpret : ::testing::Test
+{
+	void Run(const char* program)
+	{
+		auto tokens = Tokenize(program).tokens;
+		auto expr = Parse(tokens);
+		Interpreter.Run(expr.get());
+	}
+
+	bool HasVariable(const char* name)
+	{
+		return Interpreter.HasVariable(name);
+	}
+
+	double ValueAsNumber(const char* name)
+	{
+		return std::get<double>(*Interpreter.ModifyVariable(name));
+	}
+
+	IPLString ValueAsString(const char* name)
+	{
+		return std::get<IPLString>(*Interpreter.ModifyVariable(name));
+	}
+
+	ASTInterpreter Interpreter;
+};
+
+TEST_F(ASTInterpret, VarNumber)
+{
+	Run("var answer = 6 * 7");
+	ASSERT_TRUE(HasVariable("answer"));
+	ASSERT_DOUBLE_EQ(ValueAsNumber("answer"), 42.0);
+}
+
+TEST_F(ASTInterpret, VarString)
+{
+	Run("var name = 'John' + ' ' + 'Doe'");
+	ASSERT_TRUE(HasVariable("name"));
+	ASSERT_EQ(ValueAsString("name"), "John Doe");
+}
+
+TEST_F(ASTInterpret, StringPlusNumberNotSupported)
+{
+	ASSERT_THROW(Run("var data = 'John Doe' + 42"), std::runtime_error);
+}
+
+TEST_F(ASTInterpret, StringMinusString)
+{
+	ASSERT_THROW(Run("var data = 'John' - 'Doe'"), std::runtime_error);
+}
diff --git a/JSImpl/test/Test.make b/JSImpl/test/Test.make
index 38d963e..0510fa2 100644
--- a/JSImpl/test/Test.make
+++ b/JSImpl/test/Test.make
@@ -65,6 +65,7 @@ ifeq ($(config),debug)
   LINKCMD             = $(CXX) -o $(TARGET) $(LINKOBJS) $(RESOURCES) $(ARCH) $(ALL_LDFLAGS) $(LIBS)
   OBJRESP             =
   OBJECTS := \
+	$(OBJDIR)/ASTInterpreterTests.o \
 	$(OBJDIR)/CodeGenerationTests.o \
 	$(OBJDIR)/LexerTests.o \
 	$(OBJDIR)/ParserTests.o \
@@ -102,6 +103,7 @@ ifeq ($(config),release)
   LINKCMD             = $(CXX) -o $(TARGET) $(LINKOBJS) $(RESOURCES) $(ARCH) $(ALL_LDFLAGS) $(LIBS)
   OBJRESP             =
   OBJECTS := \
+	$(OBJDIR)/ASTInterpreterTests.o \
 	$(OBJDIR)/CodeGenerationTests.o \
 	$(OBJDIR)/LexerTests.o \
 	$(OBJDIR)/ParserTests.o \
@@ -178,6 +180,10 @@ $(LDRESP): $(LDDEPS) | $(TARGETDIR) $(OBJDIRS)
 	$(SILENT) echo $^ > $@
 endif
 
+$(OBJDIR)/ASTInterpreterTests.o: ASTInterpreterTests.cpp $(GCH) $(MAKEFILE) | $(OBJDIR)/.
+	@echo $(notdir $<)
+	$(SILENT) $(CXX) $(ALL_CXXFLAGS) $(FORCE_INCLUDE) -o "$@" -c "$<"
+
 $(OBJDIR)/CodeGenerationTests.o: CodeGenerationTests.cpp $(GCH) $(MAKEFILE) | $(OBJDIR)/.
 	@echo $(notdir $<)
 	$(SILENT) $(CXX) $(ALL_CXXFLAGS) $(FORCE_INCLUDE) -o "$@" -c "$<"
diff --git a/JSImpl/test/Test.vcxproj b/JSImpl/test/Test.vcxproj
index b2e4e83..c33f333 100644
--- a/JSImpl/test/Test.vcxproj
+++ b/JSImpl/test/Test.vcxproj
@@ -123,6 +123,8 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClCompile Include="ASTInterpreterTests.cpp">
+    </ClCompile>
     <ClCompile Include="LexerTests.cpp">
     </ClCompile>
     <ClCompile Include="CodeGenerationTests.cpp">
diff --git a/JSImpl/test/Test.vcxproj.filters b/JSImpl/test/Test.vcxproj.filters
index 412f2b7..50fcfb0 100644
--- a/JSImpl/test/Test.vcxproj.filters
+++ b/JSImpl/test/Test.vcxproj.filters
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="16.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
+    <ClCompile Include="ASTInterpreterTests.cpp" />
     <ClCompile Include="LexerTests.cpp" />
     <ClCompile Include="CodeGenerationTests.cpp" />
     <ClCompile Include="ParserTests.cpp" />
-- 
cgit v1.3.1-26-gb76a