Add tests for task 1 and 2

tests/task2.rs

@@ -0,0 +1,88 @@
+extern crate rustijvm;
+
+fn steps(machine: &mut rustijvm::Machine, num: usize) {
+    for _ in 0..num {
+        println!("step");
+        machine.step().unwrap();
+    }
+}
+
+#[test]
+fn task2_simple_bipush() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestBipush1.ijvm").unwrap();
+    steps(&mut machine, 1);
+    assert_eq!(machine.cur_stack().top(), Ok(42));
+}
+
+#[test]
+fn task2_signed_bipush() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestBipush2.ijvm").unwrap();
+    steps(&mut machine, 1);
+    assert_eq!(machine.cur_stack().top(), Ok(-42));
+}
+
+#[test]
+fn task2_simple_iadd() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestIadd1.ijvm").unwrap();
+    steps(&mut machine, 3);
+    assert_eq!(machine.cur_stack().top(), Ok(60));
+}
+
+#[test]
+fn task2_signed_iadd() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestIadd2.ijvm").unwrap();
+    steps(&mut machine, 3);
+    assert_eq!(machine.cur_stack().top(), Ok(-60));
+}
+
+#[test]
+fn task2_simple_isub() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestIsub1.ijvm").unwrap();
+    steps(&mut machine, 3);
+    assert_eq!(machine.cur_stack().top(), Ok(-10));
+}
+
+#[test]
+fn task2_signed_isub() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestIsub2.ijvm").unwrap();
+    steps(&mut machine, 3);
+    assert_eq!(machine.cur_stack().top(), Ok(10));
+}
+
+#[test]
+fn task2_simple_iand() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestIAND1.ijvm").unwrap();
+    steps(&mut machine, 5);
+    assert_eq!(machine.cur_stack().top(), Ok(1));
+}
+
+#[test]
+fn task2_simple_ior() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestIOR1.ijvm").unwrap();
+    steps(&mut machine, 5);
+    assert_eq!(machine.cur_stack().top(), Ok(127));
+}
+
+#[test]
+fn task2_swap() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestSwap1.ijvm").unwrap();
+    steps(&mut machine, 1);
+    assert_eq!(machine.cur_stack().top(), Ok(10));
+    steps(&mut machine, 1);
+    assert_eq!(machine.cur_stack().top(), Ok(20));
+    steps(&mut machine, 1);
+    assert_eq!(machine.cur_stack().top(), Ok(10));
+    steps(&mut machine, 1);
+    assert_eq!(machine.cur_stack().top(), Ok(20));
+}
+
+#[test]
+fn task2_simple_stack_operations() {
+    let mut machine = rustijvm::Machine::new_from_file("files/task2/TestPop1.ijvm").unwrap();
+    steps(&mut machine, 3);
+    assert_eq!(machine.cur_stack().top(), Ok(10));
+    steps(&mut machine, 3);
+    assert_eq!(machine.cur_stack().top(), Ok(50));
+    steps(&mut machine, 1);
+    assert_eq!(machine.cur_stack().top(), Ok(10));
+}