Issue #15783: Except for the number methods, the C version of decimal now

supports all None default values present in decimal.py. These values were
largely undocumented.

2 files changed, 52 insertions, 0 deletions

diff --git a/Modules/_decimal/tests/deccheck.py b/Modules/_decimal/tests/deccheck.py
index c8da4d0..751ba57 100644
--- a/Modules/_decimal/tests/deccheck.py
+++ b/Modules/_decimal/tests/deccheck.py
@@ -36,6 +36,7 @@ from copy import copy
 from collections import defaultdict
 from test.support import import_fresh_module
 from randdec import randfloat, all_unary, all_binary, all_ternary
+from randdec import unary_optarg, binary_optarg, ternary_optarg
 from formathelper import rand_format, rand_locale
 
 C = import_fresh_module('decimal', fresh=['_decimal'])
@@ -834,6 +835,17 @@ def test_unary(method, prec, exp_range, restricted_range, itr, stat):
         except VerifyError as err:
             log(err)
 
+    if not method.startswith('__'):
+        for op in unary_optarg(prec, exp_range, itr):
+            t = TestSet(method, op)
+            try:
+                if not convert(t):
+                    continue
+                callfuncs(t)
+                verify(t, stat)
+            except VerifyError as err:
+                log(err)
+
 def test_binary(method, prec, exp_range, restricted_range, itr, stat):
     """Iterate a binary function through many test cases."""
     if method in BinaryRestricted:
@@ -848,6 +860,17 @@ def test_binary(method, prec, exp_range, restricted_range, itr, stat):
         except VerifyError as err:
             log(err)
 
+    if not method.startswith('__'):
+        for op in binary_optarg(prec, exp_range, itr):
+            t = TestSet(method, op)
+            try:
+                if not convert(t):
+                    continue
+                callfuncs(t)
+                verify(t, stat)
+            except VerifyError as err:
+                log(err)
+
 def test_ternary(method, prec, exp_range, restricted_range, itr, stat):
     """Iterate a ternary function through many test cases."""
     if method in TernaryRestricted:
@@ -862,6 +885,17 @@ def test_ternary(method, prec, exp_range, restricted_range, itr, stat):
         except VerifyError as err:
             log(err)
 
+    if not method.startswith('__'):
+        for op in ternary_optarg(prec, exp_range, itr):
+            t = TestSet(method, op)
+            try:
+                if not convert(t):
+                    continue
+                callfuncs(t)
+                verify(t, stat)
+            except VerifyError as err:
+                log(err)
+
 def test_format(method, prec, exp_range, restricted_range, itr, stat):
     """Iterate the __format__ method through many test cases."""
     for op in all_unary(prec, exp_range, itr):
diff --git a/Modules/_decimal/tests/randdec.py b/Modules/_decimal/tests/randdec.py
index 80858bf..ca0f0d1 100644
--- a/Modules/_decimal/tests/randdec.py
+++ b/Modules/_decimal/tests/randdec.py
@@ -527,6 +527,11 @@ def all_unary(prec, exp_range, itr):
     for _ in range(100):
         yield (randtuple(prec, exp_range),)
 
+def unary_optarg(prec, exp_range, itr):
+    for _ in range(100):
+        yield randdec(prec, exp_range), None
+        yield randdec(prec, exp_range), None, None
+
 def all_binary(prec, exp_range, itr):
     for a, b in bin_close_to_pow10(prec, exp_range, itr):
         yield a, b
@@ -543,6 +548,11 @@ def all_binary(prec, exp_range, itr):
     for _ in range(100):
         yield randdec(prec, exp_range), randdec(prec, exp_range)
 
+def binary_optarg(prec, exp_range, itr):
+    for _ in range(100):
+        yield randdec(prec, exp_range), randdec(prec, exp_range), None
+        yield randdec(prec, exp_range), randdec(prec, exp_range), None, None
+
 def all_ternary(prec, exp_range, itr):
     for a, b, c in tern_close_numbers(prec, exp_range, -exp_range, itr):
         yield a, b, c
@@ -557,3 +567,11 @@ def all_ternary(prec, exp_range, itr):
         b = randdec(prec, 2*exp_range)
         c = randdec(prec, 2*exp_range)
         yield a, b, c
+
+def ternary_optarg(prec, exp_range, itr):
+    for _ in range(100):
+        a = randdec(prec, 2*exp_range)
+        b = randdec(prec, 2*exp_range)
+        c = randdec(prec, 2*exp_range)
+        yield a, b, c, None
+        yield a, b, c, None, None