add tests

IPython/core/tests/test_inputtransformer2.py

@@ -10,6 +10,8 b' import string'
 from IPython.core import inputtransformer2 as ipt2
 from IPython.core.inputtransformer2 import make_tokens_by_line
 
+from textwrap import dedent
+
 MULTILINE_MAGIC = ("""\
 a = f()
 %foo \\
@@ -208,6 +210,14 b' def test_check_complete():'
     nt.assert_equal(cc("a \\ "), ('invalid', None))  # Nothing allowed after backslash
     nt.assert_equal(cc("1\\\n+2"), ('complete', None))
 
+    example = dedent("""
+        if True:
+            a=1""" )
+
+    nt.assert_equal(cc(example), ('incomplete', 4))
+    nt.assert_equal(cc(example+'\n'), ('complete', None))
+    nt.assert_equal(cc(example+'\n    '), ('complete', None))
+
     # no need to loop on all the letters/numbers.
     short = '12abAB'+string.printable[62:]
     for c in short: