fix (#224)

Signed-off-by: Michael Carlstrom <rmc@carlstrom.com>

Author: InvincibleRMC

rosidl_generator_py/resource/_msg.py.em

@@ -402,7 +402,7 @@ if isinstance(type_, AbstractNestedType):
 @[    continue]@
 @[  end if]@
 @[  if isinstance(member.type, Array) and isinstance(member.type.value_type, BasicType) and member.type.value_type.typename in SPECIAL_NESTED_BASIC_TYPES]@
-        if all(self.@(member.name) != other.@(member.name)):
+        if any(self.@(member.name) != other.@(member.name)):
 @[  else]@
         if self.@(member.name) != other.@(member.name):
 @[  end if]@

rosidl_generator_py/test/test_interfaces.py

@@ -523,6 +523,11 @@ def test_arrays():
     setattr(msg, 'float64_values', arr_of_float64_with_inf)
     assert numpy.array_equal(arr_of_float64_with_inf, msg.float64_values)
 
+    msg2 = Arrays(int8_values=[1, 2, 3])
+    msg3 = Arrays(int8_values=[4, 5, 3])
+
+    assert msg2 != msg3
+
 
 def test_bounded_sequences():
     msg = BoundedSequences(check_fields=True)