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72 lines
2.4 KiB
Lua
72 lines
2.4 KiB
Lua
local helpers = require('test.functional.helpers')(after_each)
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local clear = helpers.clear
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local eq = helpers.eq
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local exec_lua = helpers.exec_lua
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local pcall_err = helpers.pcall_err
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local matches = helpers.matches
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local pending_c_parser = helpers.pending_c_parser
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before_each(clear)
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describe('treesitter API', function()
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-- error tests not requiring a parser library
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it('handles missing language', function()
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eq("Error executing lua: .../language.lua:0: no parser for 'borklang' language, see :help treesitter-parsers",
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pcall_err(exec_lua, "parser = vim.treesitter.get_parser(0, 'borklang')"))
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-- actual message depends on platform
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matches("Error executing lua: Failed to load parser: uv_dlopen: .+",
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pcall_err(exec_lua, "parser = vim.treesitter.require_language('borklang', 'borkbork.so')"))
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-- Should not throw an error when silent
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eq(false, exec_lua("return vim.treesitter.require_language('borklang', nil, true)"))
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eq(false, exec_lua("return vim.treesitter.require_language('borklang', 'borkbork.so', true)"))
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eq("Error executing lua: .../language.lua:0: no parser for 'borklang' language, see :help treesitter-parsers",
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pcall_err(exec_lua, "parser = vim.treesitter.inspect_language('borklang')"))
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end)
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it('inspects language', function()
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if pending_c_parser(pending) then return end
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local keys, fields, symbols = unpack(exec_lua([[
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local lang = vim.treesitter.inspect_language('c')
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local keys, symbols = {}, {}
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for k,_ in pairs(lang) do
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keys[k] = true
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end
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-- symbols array can have "holes" and is thus not a valid msgpack array
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-- but we don't care about the numbers here (checked in the parser test)
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for _, v in pairs(lang.symbols) do
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table.insert(symbols, v)
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end
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return {keys, lang.fields, symbols}
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]]))
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eq({fields=true, symbols=true}, keys)
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local fset = {}
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for _,f in pairs(fields) do
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eq("string", type(f))
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fset[f] = true
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end
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eq(true, fset["directive"])
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eq(true, fset["initializer"])
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local has_named, has_anonymous
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for _,s in pairs(symbols) do
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eq("string", type(s[1]))
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eq("boolean", type(s[2]))
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if s[1] == "for_statement" and s[2] == true then
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has_named = true
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elseif s[1] == "|=" and s[2] == false then
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has_anonymous = true
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end
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end
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eq({true,true}, {has_named,has_anonymous})
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end)
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end)
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