diff options
Diffstat (limited to 'tests')
-rw-r--r-- | tests/fuzzer_spec.lua | 7 | ||||
-rw-r--r-- | tests/runner_spec.lua | 13 |
2 files changed, 20 insertions, 0 deletions
diff --git a/tests/fuzzer_spec.lua b/tests/fuzzer_spec.lua index fc68680..c47f1e5 100644 --- a/tests/fuzzer_spec.lua +++ b/tests/fuzzer_spec.lua @@ -97,6 +97,7 @@ describe("fuzzer", function() end local function make_edits(lines) + local was_empty = table.concat(lines):match("^%s*$") lines = vim.deepcopy(lines) for _ = 1, math.random(0, 3) do do_insert(lines) @@ -107,6 +108,12 @@ describe("fuzzer", function() for _ = 1, math.random(0, 3) do do_delete(lines) end + -- avoid blank output (whitepsace only) which is ignored when applying formatting + if not was_empty then + while table.concat(lines):match("^%s*$") do + do_replace(lines) + end + end return lines end diff --git a/tests/runner_spec.lua b/tests/runner_spec.lua index 5ab7893..0c45117 100644 --- a/tests/runner_spec.lua +++ b/tests/runner_spec.lua @@ -307,6 +307,19 @@ print("a") assert.are.same({ "newcontent" }, vim.api.nvim_buf_get_lines(0, 0, -1, false)) end) + it("discards formatting changes if formatter output is empty /w non-empty input", function() + local bufnr = vim.fn.bufadd("testfile") + vim.fn.bufload(bufnr) + vim.api.nvim_set_current_buf(bufnr) + local original_lines = { "line one", "line two" } + vim.api.nvim_buf_set_lines(bufnr, 0, -1, true, original_lines) + vim.bo[bufnr].modified = false + set_formatter_output({ "" }) + conform.format({ formatters = { "test" }, quiet = true }) + local output_lines = vim.api.nvim_buf_get_lines(0, 0, -1, false) + assert.are.same(original_lines, output_lines) + end) + it("formats on save", function() conform.setup({ formatters_by_ft = { ["*"] = { "test" } }, |