Check the lexer modules the filter cannot use

A module called lexer that is not Scintillua, a Scintillua older than
6.0 without detect(), lexers that cannot load lpeg and a lexer that
returns no token list were all documented and none was tried.

1 file changed, 11 insertions, 3 deletions

diff --git a/tests/extensions/fake-lexers/lexer.lua b/tests/extensions/fake-lexers/lexer.luaindex bb869de..c9d8cff 100644--- a/tests/extensions/fake-lexers/lexer.lua+++ b/tests/extensions/fake-lexers/lexer.lua@@ -3,8 +3,9 @@ -- real collection installed. detect() answers for the suffixes it knows, -- matched by case as Scintillua's own does, or fake for a shebang naming it, -- and load() hands out the toy lexer of that name. Besides fake there is one--- that stops short and one that raises, and python, which detect() knows but--- load() cannot find, as a collection missing a lexer would answer.+-- that stops short, one that raises and one that returns no tokens at all,+-- and python, which detect() knows but load() cannot find, as a collection+-- missing a lexer would answer.  local M = {} @@ -54,10 +55,15 @@ local function lex_raise(self, text) 	error("this lexer always raises") end +local function lex_nothing(self, text)+	return nil+end+ local lexers = { 	fake = { lex = lex_words }, 	short = { lex = lex_short }, 	badlex = { lex = lex_raise },+	nothing = { lex = lex_nothing }, }  function M.load(name)@@ -68,7 +74,9 @@ function M.load(name) 	return lexer end -local suffixes = { fake = "fake", short = "short", badlex = "badlex", py = "python" }+local suffixes = {+	fake = "fake", short = "short", badlex = "badlex", nothing = "nothing", py = "python",+}  function M.detect(filename, line) 	if line ~= nil and line:match("^#!.*fake") then
diff --git a/tests/extensions/fake-lexers/lexer.lua b/tests/extensions/fake-lexers/lexer.lua
index bb869de..c9d8cff 100644
--- a/tests/extensions/fake-lexers/lexer.lua
+++ b/tests/extensions/fake-lexers/lexer.lua
@@ -3,8 +3,9 @@
 -- real collection installed. detect() answers for the suffixes it knows,
 -- matched by case as Scintillua's own does, or fake for a shebang naming it,
 -- and load() hands out the toy lexer of that name. Besides fake there is one
--- that stops short and one that raises, and python, which detect() knows but
--- load() cannot find, as a collection missing a lexer would answer.
+-- that stops short, one that raises and one that returns no tokens at all,
+-- and python, which detect() knows but load() cannot find, as a collection
+-- missing a lexer would answer.
 
 local M = {}
 
@@ -54,10 +55,15 @@ local function lex_raise(self, text)
 	error("this lexer always raises")
 end
 
+local function lex_nothing(self, text)
+	return nil
+end
+
 local lexers = {
 	fake = { lex = lex_words },
 	short = { lex = lex_short },
 	badlex = { lex = lex_raise },
+	nothing = { lex = lex_nothing },
 }
 
 function M.load(name)
@@ -68,7 +74,9 @@ function M.load(name)
 	return lexer
 end
 
-local suffixes = { fake = "fake", short = "short", badlex = "badlex", py = "python" }
+local suffixes = {
+	fake = "fake", short = "short", badlex = "badlex", nothing = "nothing", py = "python",
+}
 
 function M.detect(filename, line)
 	if line ~= nil and line:match("^#!.*fake") then