Add basic control flow test

.gitignore

@@ -1,4 +1,4 @@
-test*.py
+/test*.py
 __pycache__*/
 build/
 dist/

tests/test_cf.py

@@ -0,0 +1,21 @@
+from crashlink import *
+
+from typing import Tuple
+
+def load_test(path) -> Tuple[Bytecode, Function]:
+    code = Bytecode.from_path(path)
+    assert code is not None
+    func = None
+    for f in code.functions:
+        if "main" in fmt.disasm.full_func_name(code, f):
+            func = f
+            break
+    assert func is not None
+    return code, func
+
+def test_switch():
+    code, func = load_test("tests/haxe/Switch.hl")
+    cfg = fmt.decomp.CFGraph(func)
+    cfg.build()
+    assert cfg.nodes[0].ops[-1].op == "Switch"
+    assert cfg.nodes[-1].ops[-1].op == "Ret"