From dc3c5a8325eb2f425906b6419806862de84416ef Mon Sep 17 00:00:00 2001 From: Adam Scarr Date: Wed, 9 Aug 2017 21:41:57 +1000 Subject: Add a regex parser --- parser_test.go | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) (limited to 'parser_test.go') diff --git a/parser_test.go b/parser_test.go index 8868593..e9da404 100644 --- a/parser_test.go +++ b/parser_test.go @@ -133,6 +133,34 @@ func TestChars(t *testing.T) { }) } +func TestRegex(t *testing.T) { + t.Run("full match", func(t *testing.T) { + node, ps := runParser("hello", Regex("[a-z]*")) + require.Equal(t, "hello", node.Token) + require.Equal(t, "", ps.Get()) + require.False(t, ps.Errored()) + }) + + t.Run("limited match", func(t *testing.T) { + node, ps := runParser("hello world", Regex("[a-z]*")) + require.Equal(t, "hello", node.Token) + require.Equal(t, " world", ps.Get()) + require.False(t, ps.Errored()) + }) + + t.Run("no match", func(t *testing.T) { + _, ps := runParser("1234", Regex("[a-z]*")) + require.Equal(t, "offset 0: expected [a-z]*", ps.Error.Error()) + require.Equal(t, 0, ps.Pos) + }) + + t.Run("eof", func(t *testing.T) { + _, ps := runParser("", Regex("[a-z]*")) + require.Equal(t, "offset 0: expected [a-z]*", ps.Error.Error()) + require.Equal(t, 0, ps.Pos) + }) +} + func TestParseString(t *testing.T) { Y := Map("hello", func(n Result) Result { return Result{Result: n.Token} }) -- cgit v1.2.3