1 files changed, 19 insertions, 0 deletions
diff --git a/tests/float/float_format.py b/tests/float/float_format.py
new file mode 100644
index 000000000..d43535cf2
--- /dev/null
+++ b/tests/float/float_format.py
@@ -0,0 +1,19 @@
+# test float formatting
+
+# general rounding
+for val in (116, 1111, 1234, 5010, 11111):
+    print('%.0f' % val)
+    print('%.1f' % val)
+    print('%.3f' % val)
+
+# make sure rounding is done at the correct precision
+for prec in range(8):
+    print(('%%.%df' % prec) % 6e-5)
+
+# check certain cases that had a digit value of 10 render as a ":" character
+print('%.2e' % float('9' * 51 + 'e-39'))
+print('%.2e' % float('9' * 40 + 'e-21'))
+
+# check a case that would render negative digit values, eg ")" characters
+# the string is converted back to a float to check for no illegal characters
+float('%.23e' % 1e-80)