test_entropy does not need load_device

tests/test_entropy.py

@@ -5,27 +5,21 @@ import math
 from trezorlib import messages_pb2 as messages
 
 def entropy(data):
-    e = 0
-    for i in range(256):
-        p = 0
+    counts = {}
     for c in data:
-            if ord(c) == i:
-                p += 1
-        if p == 0:
-            continue
-        p = 1.0 * p / len(data)
+        if c in counts:
+            counts[c] += 1
+        else:
+            counts[c] = 1
+    e = 0
+    for k,v in counts.iteritems():
+        p = 1.0 * v / len(data)
         e -= p * math.log(p, 256)
     return e
 
 class TestEntropy(common.TrezorTest):
 
     def test_entropy(self):
-        self.client.load_device_by_mnemonic(mnemonic=self.mnemonic1,
-                                            pin='',
-                                            passphrase_protection=False,
-                                            label='test',
-                                            language='english')
-
         for l in [0, 1, 2, 3, 4, 5, 8, 9, 16, 17, 32, 33, 64, 65, 128, 129, 256, 257, 512, 513, 1024]:
             ent = self.client.get_entropy(l)
             self.assertTrue(len(ent) >= l)