Merge pull request #322 from pllab/tests

Updating some tests

Author: mdko

tests/test_signed.py

@@ -153,11 +153,11 @@ def test_basic_signed_add(self):
         #                  0   1   2  3  -4  -3  -2  -1
         self.check_trace('-3  -2  -1  0  -7  -6  -5  -4')
 
-    def test_basic_signed_add(self):
-        self.o <<= pyrtl.signed_add(self.r, Const(-3, signed=True))
+    def test_basic_signed_add_signed_const(self):
+        self.o <<= pyrtl.signed_add(self.r, pyrtl.Const(-3, signed=True))
         self.check_trace('-3  -2  -1  0  -7  -6  -5  -4')
 
-    def test_basic_signed_add(self):
+    def test_basic_signed_add_neg_integer(self):
         self.o <<= pyrtl.signed_add(self.r, -3)
         self.check_trace('-3  -2  -1  0  -7  -6  -5  -4')
 
@@ -169,21 +169,21 @@ def test_basic_signed_mult(self):
         # extend the inputs, truncate to the last 4 digits and then sign extend,
         # the output I assure that they are indeed correct. :)
 
-    def test_basic_signed_mult(self):
+    def test_basic_signed_mult_const_with_bitwidth(self):
         self.o <<= pyrtl.signed_mult(self.r, pyrtl.Const(-2, bitwidth=3))
         #                 0   1   2   3  -4 -3 -2 -1
         self.check_trace('0  -2  -4  -6  -8  6  4  2')
         # this one is multiplies by -2 and the trend is easier to see (-4 x -3 does
         # overflow the 4 bits though).
 
-    def test_basic_signed_mult(self):
+    def test_basic_signed_mult_signed_const(self):
         self.o <<= pyrtl.signed_mult(self.r, pyrtl.Const(-2, signed=True))
         self.check_trace('0  -2  -4  -6  -8  6  4  2')
 
-    def test_basic_signed_mult(self):
+    def test_basic_signed_mult_neg_integer(self):
         self.o <<= pyrtl.signed_mult(self.r, -2)
         self.check_trace('0  -2  -4  -6  -8  6  4  2')
 
-    def test_basic_signed_mult(self):
+    def test_basic_signed_mult_commutative(self):
         self.o <<= pyrtl.signed_mult(-2, self.r)
         self.check_trace('0  -2  -4  -6  -8  6  4  2')