fix small decimal with disabled decimal_quantization

babel/numbers.py

@@ -1063,7 +1063,7 @@ def _format_int(self, value, min, max, locale):
     def _quantize_value(self, value, locale, frac_prec):
         quantum = get_decimal_quantum(frac_prec[1])
         rounded = value.quantize(quantum)
-        a, sep, b = str(rounded).partition(".")
+        a, sep, b = "{:f}".format(rounded).partition(".")
         number = (self._format_int(a, self.int_prec[0],
                                    self.int_prec[1], locale) +
                   self._format_frac(b or '0', locale, frac_prec))

setup.py

@@ -63,6 +63,7 @@ def run(self):
         # pytz otherwise does not install on pip 1.4 or
         # higher.
         'pytz>=2015.7',
+        'freezegun==0.3.12',
     ],
 
     cmdclass={'import_cldr': import_cldr},

tests/test_numbers.py

@@ -690,3 +690,7 @@ def test_parse_decimal_nbsp_heuristics():
     n = decimal.Decimal("12345.123")
     assert numbers.parse_decimal("12 345.123", locale="fi") == n
     assert numbers.parse_decimal(numbers.format_decimal(n, locale="fi"), locale="fi") == n
+
+
+def test_very_small_decimal_no_quantization():
+    assert numbers.format_decimal(decimal.Decimal('1E-7'), locale='en', decimal_quantization=False) == '0.0000001'

tox.ini

@@ -1,12 +1,12 @@
 [tox]
-envlist = py27, pypy, py34, py35, py36, py37, pypy3, py27-cdecimal
+envlist = py27, pypy, py34, py35, py36, py37, pypy3, py27-cdecimal, py38
 
 [testenv]
 deps =
     pytest==4.3.1
     pytest-cov==2.6.1
     cdecimal: m3-cdecimal
-    freezegun==0.3.11
+    freezegun==0.3.12
 whitelist_externals = make
 commands = make clean-cldr test
 passenv = PYTHON_TEST_FLAGS