1 files changed, 76 insertions, 0 deletions
diff --git a/lib/python2.7/test/test_fpformat.py b/lib/python2.7/test/test_fpformat.py
new file mode 100644
index 0000000..e6de3b0
--- /dev/null
+++ b/lib/python2.7/test/test_fpformat.py
@@ -0,0 +1,76 @@
+'''
+   Tests for fpformat module
+   Nick Mathewson
+'''
+from test.test_support import run_unittest, import_module
+import unittest
+fpformat = import_module('fpformat', deprecated=True)
+fix, sci, NotANumber = fpformat.fix, fpformat.sci, fpformat.NotANumber
+
+StringType = type('')
+
+# Test the old and obsolescent fpformat module.
+#
+# (It's obsolescent because fix(n,d) == "%.*f"%(d,n) and
+#                           sci(n,d) == "%.*e"%(d,n)
+#  for all reasonable numeric n and d, except that sci gives 3 exponent
+#  digits instead of 2.
+#
+# Differences only occur for unreasonable n and d.    <.2 wink>)
+
+class FpformatTest(unittest.TestCase):
+
+    def checkFix(self, n, digits):
+        result = fix(n, digits)
+        if isinstance(n, StringType):
+            n = repr(n)
+        expected = "%.*f" % (digits, float(n))
+
+        self.assertEqual(result, expected)
+
+    def checkSci(self, n, digits):
+        result = sci(n, digits)
+        if isinstance(n, StringType):
+            n = repr(n)
+        expected = "%.*e" % (digits, float(n))
+        # add the extra 0 if needed
+        num, exp = expected.split("e")
+        if len(exp) < 4:
+            exp = exp[0] + "0" + exp[1:]
+        expected = "%se%s" % (num, exp)
+
+        self.assertEqual(result, expected)
+
+    def test_basic_cases(self):
+        self.assertEqual(fix(100.0/3, 3), '33.333')
+        self.assertEqual(sci(100.0/3, 3), '3.333e+001')
+
+    def test_reasonable_values(self):
+        for d in range(7):
+            for val in (1000.0/3, 1000, 1000.0, .002, 1.0/3, 1e10):
+                for realVal in (val, 1.0/val, -val, -1.0/val):
+                    self.checkFix(realVal, d)
+                    self.checkSci(realVal, d)
+
+    def test_failing_values(self):
+        # Now for 'unreasonable n and d'
+        self.assertEqual(fix(1.0, 1000), '1.'+('0'*1000))
+        self.assertEqual(sci("1"+('0'*1000), 0), '1e+1000')
+
+        # This behavior is inconsistent.  sci raises an exception; fix doesn't.
+        yacht = "Throatwobbler Mangrove"
+        self.assertEqual(fix(yacht, 10), yacht)
+        try:
+            sci(yacht, 10)
+        except NotANumber:
+            pass
+        else:
+            self.fail("No exception on non-numeric sci")
+
+
+def test_main():
+    run_unittest(FpformatTest)
+
+
+if __name__ == "__main__":
+    test_main()