SF patch #523169, by Samuele Pedroni.
There were never tests for the fact that list() always returns a *new*
list object, even when the argument is a list, while tuple() may
return a reference to the argument when it is a tuple. Now there are.
diff --git a/Lib/test/output/test_builtin b/Lib/test/output/test_builtin
index 1c3b69c..6c1b9aa 100644
--- a/Lib/test/output/test_builtin
+++ b/Lib/test/output/test_builtin
@@ -26,6 +26,7 @@
isinstance
issubclass
len
+list
long
map
max
diff --git a/Lib/test/test_b1.py b/Lib/test/test_b1.py
index 17f0411..8d47abc 100644
--- a/Lib/test/test_b1.py
+++ b/Lib/test/test_b1.py
@@ -491,6 +491,16 @@
if len({}) != 0: raise TestFailed, 'len({})'
if len({'a':1, 'b': 2}) != 2: raise TestFailed, 'len({\'a\':1, \'b\': 2})'
+print 'list'
+if list([]) != []: raise TestFailed, 'list([])'
+l0_3 = [0, 1, 2, 3]
+l0_3_bis = list(l0_3)
+if l0_3 != l0_3_bis or l0_3 is l0_3_bis: raise TestFailed, 'list([0, 1, 2, 3])'
+if list(()) != []: raise TestFailed, 'list(())'
+if list((0, 1, 2, 3)) != [0, 1, 2, 3]: raise TestFailed, 'list((0, 1, 2, 3))'
+if list('') != []: raise TestFailed, 'list('')'
+if list('spam') != ['s', 'p', 'a', 'm']: raise TestFailed, "list('spam')"
+
print 'long'
if long(314) != 314L: raise TestFailed, 'long(314)'
if long(3.14) != 3L: raise TestFailed, 'long(3.14)'
diff --git a/Lib/test/test_b2.py b/Lib/test/test_b2.py
index c5af1b3..b930380 100644
--- a/Lib/test/test_b2.py
+++ b/Lib/test/test_b2.py
@@ -253,7 +253,9 @@
print 'tuple'
if tuple(()) != (): raise TestFailed, 'tuple(())'
-if tuple((0, 1, 2, 3)) != (0, 1, 2, 3): raise TestFailed, 'tuple((0, 1, 2, 3))'
+t0_3 = (0, 1, 2, 3)
+t0_3_bis = tuple(t0_3)
+if t0_3 is not t0_3_bis: raise TestFailed, 'tuple((0, 1, 2, 3))'
if tuple([]) != (): raise TestFailed, 'tuple([])'
if tuple([0, 1, 2, 3]) != (0, 1, 2, 3): raise TestFailed, 'tuple([0, 1, 2, 3])'
if tuple('') != (): raise TestFailed, 'tuple('')'