Add GoToColumn test (#217)

* Add GoToColumn test

* Update GoToColumn test with ptmcg's feedback

1 files changed, 38 insertions, 0 deletions

diff --git a/tests/test_unit.py b/tests/test_unit.py
index 05ff858..b16da18 100644
--- a/tests/test_unit.py
+++ b/tests/test_unit.py
@@ -7542,6 +7542,44 @@ class Test2_WithoutPackrat(ppt.TestParseResultsAsserts, TestCase):
             result, expected, msg="issue with OnlyOnce after reset"
         )
 
+    def testGoToColumn(self):
+        """tests for GoToColumn class"""
+
+        dateExpr = pp.Regex(r"\d\d(\.\d\d){2}")("date")
+        numExpr = ppc.number("num")
+
+        sample = """\
+            date                Not Important                         value    NotImportant2
+            11.11.13       |    useless . useless,21 useless 2     |  14.21  | asmdakldm
+            21.12.12       |    fmpaosmfpoamsp 4                   |  41     | ajfa9si90""".splitlines()
+
+        # Column number finds match
+        patt = dateExpr + pp.GoToColumn(70).ignore("|") + numExpr + pp.restOfLine
+
+        infile = iter(sample)
+        next(infile)
+
+        expecteds = [["11.11.13", 14.21], ["21.12.12", 41]]
+        for line, expected in zip(infile, expecteds):
+            result = patt.parseString(line)
+            print(result)
+
+            self.assertEqual(
+                [result.date, result.num], expected, msg="issue with GoToColumn"
+            )
+
+        # Column number does NOT match
+        patt = dateExpr("date") + pp.GoToColumn(30) + numExpr + pp.restOfLine
+
+        infile = iter(sample)
+        next(infile)
+
+        for line in infile:
+            with self.assertRaisesParseException(
+                msg="issue with GoToColumn not finding match"
+            ):
+                result = patt.parseString(line)
+
 
 class Test3_EnablePackratParsing(TestCase):
     def runTest(self):