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require("plenary.async").tests.add_to_env()
local test_util = require("tests.test_util")
local conform = require("conform")
local runner = require("conform.runner")
describe("runner", function()
after_each(function()
test_util.reset_editor()
end)
it("resolves config function", function()
conform.formatters.test = function()
return {
meta = { url = "", description = "" },
command = "echo",
}
end
local config = assert(conform.get_formatter_config("test"))
assert.are.same({
meta = { url = "", description = "" },
command = "echo",
stdin = true,
}, config)
end)
describe("build_context", function()
it("sets the filename and dirname", function()
vim.cmd.edit({ args = { "README.md" } })
local bufnr = vim.api.nvim_get_current_buf()
conform.formatters.test = {
meta = { url = "", description = "" },
command = "echo",
}
local config = assert(conform.get_formatter_config("test"))
local ctx = runner.build_context(0, config)
local filename = vim.api.nvim_buf_get_name(bufnr)
assert.are.same({
buf = bufnr,
filename = filename,
dirname = vim.fs.dirname(filename),
}, ctx)
end)
it("sets temp file when stdin = false", function()
vim.cmd.edit({ args = { "README.md" } })
local bufnr = vim.api.nvim_get_current_buf()
conform.formatters.test = {
meta = { url = "", description = "" },
command = "echo",
stdin = false,
}
local config = assert(conform.get_formatter_config("test"))
local ctx = runner.build_context(0, config)
local bufname = vim.api.nvim_buf_get_name(bufnr)
local dirname = vim.fs.dirname(bufname)
assert.equal(bufnr, ctx.buf)
assert.equal(dirname, ctx.dirname)
assert.truthy(ctx.filename:match(dirname .. "/.conform.%d+.README.md$"))
end)
end)
describe("build_cmd", function()
it("replaces $FILENAME in args", function()
vim.cmd.edit({ args = { "README.md" } })
local bufnr = vim.api.nvim_get_current_buf()
conform.formatters.test = {
meta = { url = "", description = "" },
command = "echo",
args = { "$FILENAME" },
}
local config = assert(conform.get_formatter_config("test"))
local ctx = runner.build_context(0, config)
local cmd = runner.build_cmd(ctx, config)
assert.are.same({ "echo", vim.api.nvim_buf_get_name(bufnr) }, cmd)
end)
it("replaces $DIRNAME in args", function()
vim.cmd.edit({ args = { "README.md" } })
local bufnr = vim.api.nvim_get_current_buf()
conform.formatters.test = {
meta = { url = "", description = "" },
command = "echo",
args = { "$DIRNAME" },
}
local config = assert(conform.get_formatter_config("test"))
local ctx = runner.build_context(0, config)
local cmd = runner.build_cmd(ctx, config)
assert.are.same({ "echo", vim.fs.dirname(vim.api.nvim_buf_get_name(bufnr)) }, cmd)
end)
it("resolves arg function", function()
vim.cmd.edit({ args = { "README.md" } })
conform.formatters.test = {
meta = { url = "", description = "" },
command = "echo",
args = function()
return { "--stdin" }
end,
}
local config = assert(conform.get_formatter_config("test"))
local ctx = runner.build_context(0, config)
local cmd = runner.build_cmd(ctx, config)
assert.are.same({ "echo", "--stdin" }, cmd)
end)
end)
describe("e2e", function()
before_each(function()
conform.formatters.test = {
meta = { url = "", description = "" },
command = "tests/fake_formatter.sh",
}
end)
---@param buf_content string
---@param expected string
---@param opts? table
local function run_formatter(buf_content, expected, opts)
local bufnr = vim.fn.bufadd("testfile")
vim.fn.bufload(bufnr)
vim.api.nvim_set_current_buf(bufnr)
local lines = vim.split(buf_content, "\n", { plain = true })
vim.api.nvim_buf_set_lines(bufnr, 0, -1, true, lines)
vim.bo[bufnr].modified = false
local expected_lines = vim.split(expected, "\n", { plain = true })
test_util.set_formatter_output(expected_lines)
conform.format(vim.tbl_extend("force", opts or {}, { formatters = { "test" } }))
return expected_lines
end
---@param buf_content string
---@param new_content string
---@param expected? string[]
local function run_formatter_test(buf_content, new_content, expected)
local lines = run_formatter(buf_content, new_content)
assert.are.same(expected or lines, vim.api.nvim_buf_get_lines(0, 0, -1, false))
end
it("sets the correct output", function()
run_formatter_test(
[[
if true {
print("hello")
}]],
[[
if true {
print("hello")
}]]
)
run_formatter_test(
[[
if true {
print("hello")
}]],
[[
if true {
print("goodbye")
}]]
)
run_formatter_test(
[[
if true {
print("hello")
}]],
[[
if true {
print("hello world")
print("hello world")
print("hello world")
}]]
)
run_formatter_test(
[[
print("a")
print("b")
print("c")
]],
[[
print("c")
print("b")
print("a")
]]
)
run_formatter_test("hello\ngoodbye", "hello\n\n\ngoodbye", { "hello", "", "", "goodbye" })
run_formatter_test("hello", "hello\ngoodbye", { "hello", "goodbye" })
run_formatter_test("", "hello", { "hello" })
run_formatter_test("\nfoo", "\nhello\nfoo", { "", "hello", "foo" })
run_formatter_test("hello", "hello\n\n", { "hello", "" })
run_formatter_test("hello", "hello\n", { "hello" })
assert.falsy(vim.bo.modified)
run_formatter_test("hello\n", "hello", { "hello" })
run_formatter_test("hello\n ", "hello", { "hello" })
end)
it("does not change output if formatter fails", function()
conform.formatters.test.args = { "--fail" }
run_formatter("hello", "goodbye")
assert.are.same({ "hello" }, vim.api.nvim_buf_get_lines(0, 0, -1, false))
end)
it("allows nonzero exit codes", function()
conform.formatters.test.args = { "--fail" }
conform.formatters.test.exit_codes = { 0, 1 }
run_formatter_test("hello", "goodbye")
end)
it("does not format if it times out", function()
conform.formatters.test.args = { "--timeout" }
run_formatter("hello", "goodbye", { timeout_ms = 10 })
assert.are.same({ "hello" }, vim.api.nvim_buf_get_lines(0, 0, -1, false))
end)
it("can format async", function()
run_formatter("hello", "goodbye", { async = true })
assert.are.same({ "hello" }, vim.api.nvim_buf_get_lines(0, 0, -1, false))
vim.wait(100)
assert.are.same({ "goodbye" }, vim.api.nvim_buf_get_lines(0, 0, -1, false))
end)
it("discards formatting changes if buffer has been concurrently modified", function()
run_formatter("hello", "goodbye", { async = true })
assert.are.same({ "hello" }, vim.api.nvim_buf_get_lines(0, 0, -1, false))
vim.api.nvim_buf_set_lines(0, 0, -1, true, { "newcontent" })
vim.wait(100)
assert.are.same({ "newcontent" }, vim.api.nvim_buf_get_lines(0, 0, -1, false))
end)
it("formats on save", function()
conform.setup({
formatters_by_ft = { ["*"] = { "test" } },
format_on_save = true,
})
vim.cmd.edit({ args = { "tests/testfile.txt" } })
vim.api.nvim_buf_set_lines(0, 0, -1, true, { "hello" })
test_util.set_formatter_output({ "goodbye" })
vim.cmd.write()
local lines = vim.api.nvim_buf_get_lines(0, 0, -1, false)
vim.fn.delete("tests/testfile.txt")
assert.are.same({ "goodbye" }, lines)
end)
end)
end)
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