166 lines
4.8 KiB
Lua
166 lines
4.8 KiB
Lua
---------------------------------------------------------------------------
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-- @author Uli Schlachter
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-- @copyright 2014 Uli Schlachter
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---------------------------------------------------------------------------
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local object = require("gears.object")
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describe("gears.object", function()
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local obj
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before_each(function()
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obj = object()
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obj:add_signal("signal")
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end)
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it("strong connect non-existent signal", function()
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assert.has.errors(function()
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obj:connect_signal("foo", function() end)
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end)
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end)
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it("weak connect non-existent signal", function()
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assert.has.errors(function()
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obj:weak_connect_signal("foo", function() end)
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end)
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end)
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it("strong disconnect non-existent signal", function()
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assert.has.errors(function()
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obj:disconnect_signal("foo", function() end)
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end)
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end)
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it("emitting non-existent signal", function()
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assert.has.errors(function()
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obj:emit_signal("foo")
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end)
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end)
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it("strong connecting and emitting signal", function()
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local called = false
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local function cb()
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called = true
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end
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obj:connect_signal("signal", cb)
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obj:emit_signal("signal")
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assert.is_true(called)
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end)
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it("weak connecting and emitting signal", function()
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local called = false
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local function cb()
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called = true
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end
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obj:weak_connect_signal("signal", cb)
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-- Check that the GC doesn't disconnect the signal
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for i = 1, 10 do
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collectgarbage("collect")
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end
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obj:emit_signal("signal")
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assert.is_true(called)
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end)
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it("strong connecting, disconnecting and emitting signal", function()
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local called = false
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local function cb()
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called = true
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end
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obj:connect_signal("signal", cb)
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obj:disconnect_signal("signal", cb)
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obj:emit_signal("signal")
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assert.is_false(called)
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end)
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it("weak connecting, disconnecting and emitting signal", function()
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local called = false
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local function cb()
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called = true
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end
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obj:weak_connect_signal("signal", cb)
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obj:disconnect_signal("signal", cb)
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obj:emit_signal("signal")
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assert.is_false(called)
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end)
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it("arguments to signal", function()
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obj:connect_signal("signal", function(arg1, arg2)
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assert.is.equal(obj, arg1)
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assert.is.same(42, arg2)
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end)
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obj:weak_connect_signal("signal", function(arg1, arg2)
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assert.is.equal(obj, arg1)
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assert.is.same(42, arg2)
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end)
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obj:emit_signal("signal", 42)
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end)
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it("strong non-auto disconnect", function()
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local called = false
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obj:connect_signal("signal", function()
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called = true
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end)
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collectgarbage("collect")
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obj:emit_signal("signal")
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assert.is_true(called)
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end)
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it("weak auto disconnect", function()
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local called = false
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obj:weak_connect_signal("signal", function()
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called = true
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end)
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collectgarbage("collect")
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obj:emit_signal("signal")
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assert.is_false(called)
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end)
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it("strong connect after weak connect", function()
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local function cb() end
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obj:weak_connect_signal("signal", cb)
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assert.has.errors(function()
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obj:connect_signal("signal", cb)
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end)
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end)
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it("weak connect after strong connect", function()
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local function cb() end
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obj:connect_signal("signal", cb)
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assert.has.errors(function()
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obj:weak_connect_signal("signal", cb)
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end)
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end)
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it("weak signal is disconnected before __gc runs", function()
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local finalized = false
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do
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local userdata
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local function callback()
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error("Signal should already be disconnected")
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-- This should reference the object...
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print("userdata:", userdata)
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end
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obj:weak_connect_signal("signal", callback)
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-- Now create an object and tie its lifetime to the callback
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local function gc()
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finalized = true
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end
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if _VERSION <= "Lua 5.1" then
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local userdata = newproxy(true)
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getmetatable(userdata).__gc = gc
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getmetatable(userdata).callback = callback
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else
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userdata = setmetatable({callback}, { __gc = gc })
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end
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end
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collectgarbage("collect")
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assert.is_true(finalized)
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obj:emit_signal("signal")
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end)
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end)
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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