Parser tests

Signed-off-by: CHatingPython <chatingpython@gmail.com>

furc/test/parser.cpp

@@ -0,0 +1,33 @@
+#include "furc/front/parser.hpp"
+
+#include "gtest/gtest.h"
+
+namespace {
+
+using namespace furc::front;
+using namespace furc::ast;
+using namespace std::string_view_literals;
+
+TEST(Parser, EmptyFunctions) {
+    parser parser("<TEMP>", "func main() {}\nfunc foo();");
+    auto   program = parser.parse();
+    EXPECT_TRUE(program.present());
+    EXPECT_EQ(program->declarations().size(), 2);
+    {
+        auto first = program->declarations()[0];
+        EXPECT_TRUE(first.present());
+        EXPECT_EQ(first->type(), declaration_node_t::FunctionDefinition);
+        node_handle<function_definition_node> funcDef = first;
+        EXPECT_EQ(funcDef->name().value, "main");
+        EXPECT_EQ(funcDef->body()->statements.size(), 0);
+    }
+    {
+        auto second = program->declarations()[1];
+        EXPECT_TRUE(second.present());
+        EXPECT_EQ(second->type(), declaration_node_t::FunctionDeclaration);
+        node_handle<function_declarartion_node> funcDecl = second;
+        EXPECT_EQ(funcDecl->name().value, "foo");
+    }
+}
+
+} // namespace