.

src/vm/tests.cc

@@ -3,6 +3,7 @@
 #include "../bytecode/bytecodeprototype.hh"
 #include "../common/bytearray.hh"
 #include "../bytecode/bytecode.hh"
+#include "../assembler/assembler.hh"
 #include "code.hh"
 #include "stack.hh"
 #include "vm.hh"
@@ -92,6 +93,28 @@ TEST(VM, BasicCode)
     ASSERT_EQ(result, 5);
 }
 
+TEST(VM, SumIntegers)
+{
+    ASSERT_EQ(VM().load_bytecode(as::Assembler(R"(
+.func 0
+    pushi 2
+    pushi 3
+    sum
+    ret
+    )").assemble()).call(0).to_integer(-1), 5);
+}
+
+TEST(VM, SubtractIntegers)
+{
+    ASSERT_EQ(VM().load_bytecode(as::Assembler(R"(
+.func 0
+    pushi 2
+    pushi 3
+    sub
+    ret
+    )").assemble()).call(0).to_integer(-1), -1);
+}
+
 int main(int argc, char** argv)
 {
     testing::InitGoogleTest(&argc, argv);