| // Copyright 2018 The LUCI Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package builtins |
| |
| import ( |
| "testing" |
| |
| "go.starlark.net/starlark" |
| |
| . "github.com/smartystreets/goconvey/convey" |
| . "go.chromium.org/luci/common/testing/assertions" |
| ) |
| |
| const regexpTest = ` |
| def assert(a, b): |
| if a != b: |
| fail("%s != %s" % (a, b)) |
| |
| def test(): |
| groups = submatches(r'a (\d+) (\d+)', 'a 123 456 tail') |
| assert(groups, ("a 123 456", "123", "456")) |
| |
| groups = submatches(r'a (\d+) (\d+)', 'a huh 456') |
| assert(groups, ()) |
| |
| groups = submatches('.*', 'a 123 456 tail') |
| assert(groups, ("a 123 456 tail",)) |
| |
| groups = submatches('', 'zzz') |
| assert(groups, ('',)) # empty match (not the same as no match at all) |
| |
| test() |
| ` |
| |
| func TestRegexp(t *testing.T) { |
| t.Parallel() |
| |
| submatches := RegexpMatcher("submatches") |
| |
| runScript := func(code string) error { |
| _, err := starlark.ExecFile(&starlark.Thread{}, "main", code, starlark.StringDict{ |
| "submatches": submatches, |
| "fail": Fail, // for 'assert' |
| }) |
| return err |
| } |
| |
| Convey("Success", t, func() { |
| So(runScript(regexpTest), ShouldBeNil) |
| }) |
| |
| Convey("Fails", t, func() { |
| So(runScript(`submatches('(((', '')`), ShouldErrLike, "error parsing regexp") |
| }) |
| } |