add elf parser test

o1vm/tests/test_riscv_elf.rs

@@ -5,6 +5,23 @@ use o1vm::interpreters::riscv32i::{
     PAGE_SIZE,
 };
 
+#[test]
+// This test is used to check that the elf loader is working correctly.
+// We must export the code used in this test in a function that can be called by
+// the o1vm at load time.
+fn test_correctly_parsing_elf() {
+    let curr_dir = std::env::current_dir().unwrap();
+    let path = curr_dir.join(std::path::PathBuf::from(
+        "resources/programs/riscv32i/fibonacci",
+    ));
+    let state = o1vm::elf_loader::parse_riscv32i(&path).unwrap();
+    // This is the output we get by running objdump -d fibonacci
+    assert_eq!(state.pc, 69932);
+
+    assert_eq!(state.memory.len(), 1);
+    assert_eq!(state.memory[0].index, 17);
+}
+
 #[test]
 // Checking an instruction can be converted into a string.
 // It is mostly because we would want to use it to debug or write better error