lsblk.lua/tests.lua at master · dbohdan/lsblk.lua · GitHub

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#! /usr/libexec/flua

-- SPDX-FileCopyrightText: 2025 D. Bohdan
-- SPDX-License-Identifier: BSD-2-Clause
--
-- Tests for lsblk.lua.

local lester = require("vendor/lester/lester")
local describe, it, expect = lester.describe, lester.it, lester.expect

lester.parse_args()

local function run(cmd)
	local f = io.popen(cmd .. " 2>&1", "r")
	local output = f:read("*a")
	local _, _, code = f:close()
	return code, output
end

describe("lsblk.lua", function()
	describe("CLI options", function()
		it("should show help", function()
			local code, output = run("./lsblk.lua -h")

			expect.equal(code, 0)
			expect.truthy(output:find("List information about block devices"))
			expect.truthy(output:find("--help"))
			expect.truthy(output:find("--version"))
		end)

		it("should show version", function()
			local code, output = run("./lsblk.lua -V")

			expect.equal(code, 0)
			expect.truthy(output:match("^%d+%.%d+%.%d+\n$"))
		end)

		it("should reject invalid options", function()
			local code, output = run("./lsblk.lua -Q")

			expect.equal(code, 2)
			expect.truthy(output:find("invalid option"))
		end)

		it("should reject positional arguments", function()
			local code, output = run("./lsblk.lua /dev/ada0")

			expect.equal(code, 2)
			expect.truthy(output:find("arguments"))
		end)
	end)

	describe("output formats", function()
		it("should show default output", function()
			local code, output = run("./lsblk.lua")

			expect.equal(code, 0)
			expect.truthy(
				output:find("NAME +MAJ:MIN +SIZE +TYPE +FSTYPE +MOUNTPOINTS\n")
			)
			expect.truthy(output:find("disk"))
			expect.truthy(output:find("part"))
		end)

		it("should show byte output", function()
			local code, output = run("./lsblk.lua -b")

			expect.equal(code, 0)
			expect.truthy(output:find(" %d+ disk"))
		end)

		it("should show geom output", function()
			local code, output = run("./lsblk.lua -g")

			expect.equal(code, 0)
			expect.truthy(output:find("NAME"))
			expect.truthy(output:find("disk"))
			-- Should filter out ZFS.
			expect.falsy(output:find("zfs"))
		end)

		it("should show ZFS output", function()
			local code, output = run("./lsblk.lua -z")

			-- Only compare the code and the header
			-- because the test machine may not have ZFS pools.
			expect.equal(code, 0)
			expect.truthy(output:find("NAME"))
		end)
	end)
end)

lester.report()
lester.exit()