tests/extmod: Convert machine1.py test to use unittest.

Signed-off-by: Damien George <damien@micropython.org>

tests/extmod/machine1.py

@@ -8,39 +8,36 @@ except:
     print("SKIP")
     raise SystemExit
 
-print(machine.mem8)
+import unittest
 
-try:
+
+class Test(unittest.TestCase):
+    def test_mem8_print(self):
+        self.assertEqual(repr(machine.mem8), "<8-bit memory>")
+
+    def test_alignment(self):
+        with self.assertRaises(ValueError):
             machine.mem16[1]
-except ValueError:
-    print("ValueError")
 
-try:
+        with self.assertRaises(ValueError):
             machine.mem16[1] = 1
-except ValueError:
-    print("ValueError")
 
-try:
+    def test_operations(self):
+        with self.assertRaises(TypeError):
             del machine.mem8[0]
-except TypeError:
-    print("TypeError")
 
-try:
+        with self.assertRaises(TypeError):
             machine.mem8[0:1]
-except TypeError:
-    print("TypeError")
 
-try:
+        with self.assertRaises(TypeError):
             machine.mem8[0:1] = 10
-except TypeError:
-    print("TypeError")
 
-try:
+        with self.assertRaises(TypeError):
             machine.mem8["hello"]
-except TypeError:
-    print("TypeError")
 
-try:
+        with self.assertRaises(TypeError):
             machine.mem8["hello"] = 10
-except TypeError:
-    print("TypeError")
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/extmod/machine1.py.exp

@@ -1,8 +0,0 @@
-<8-bit memory>
-ValueError
-ValueError
-TypeError
-TypeError
-TypeError
-TypeError
-TypeError