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test.lua
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--
-- Flow: Unit tests
--
-- Copyright © 2022-2025 by luk3yx
--
-- This program is free software: you can redistribute it and/or modify
-- it under the terms of the GNU Lesser General Public License as published by
-- the Free Software Foundation, either version 2.1 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU Lesser General Public License for more details.
--
-- You should have received a copy of the GNU Lesser General Public License
-- along with this program. If not, see <https://www.gnu.org/licenses/>.
--
-- luacheck: ignore
-- Load formspec_ast
_G.FORMSPEC_AST_PATH = '../formspec_ast'
dofile(FORMSPEC_AST_PATH .. '/init.lua')
-- Stub Minetest API
_G.core = {}
function core.is_yes(str)
str = str:lower()
return str == "true" or str == "yes"
end
local callback
function core.register_on_player_receive_fields(func)
assert(callback == nil)
callback = func
end
local function dummy() end
core.register_on_leaveplayer = dummy
core.is_singleplayer = dummy
core.get_player_information = dummy
core.show_formspec = dummy
function core.get_modpath(modname)
if modname == "flow" then
return "."
elseif modname == "formspec_ast" then
return FORMSPEC_AST_PATH
end
end
function core.get_translator(modname)
assert(modname == "flow")
return function(str) return str end
end
-- Stub minetest player api
local function stub_player(name)
assert(type(name) == "string")
local self = {}
function self:get_player_name()
return name
end
function self:get_inventory_formspec()
return ""
end
function self:set_inventory_formspec(formspec)
assert(formspec ~= nil)
function self:get_inventory_formspec()
return formspec
end
end
function core.get_player_by_name(passed_in_name)
assert(name == passed_in_name)
return self
end
return self
end
table.indexof = table.indexof or function(list, value)
for i, item in ipairs(list) do
if item == value then
return i
end
end
return -1
end
string.split = string.split or function(str, chr)
local r, i, s, e = {}, 0, str:find(chr, nil, true)
while s do
r[#r + 1] = str:sub(i, s - 1)
i = e + 1
s, e = str:find(chr, i, true)
end
r[#r + 1] = str:sub(i)
return r
end
function core.explode_textlist_event(event)
local event_type, number = event:match("^([A-Z]+):(%d+)$")
return {type = event_type, index = tonumber(number) or 0}
end
function core.explode_table_event(event)
local event_type, row, column = event:match("^([A-Z]+):(%d+):(%d+)$")
return {type = event_type, row = tonumber(row) or 0, column = tonumber(column) or 0}
end
function core.global_exists(var)
return rawget(_G, var) ~= nil
end
function core.get_player_information(name)
return name == "fs6" and {formspec_version = 6} or nil
end
-- Load flow
dofile("init.lua")
-- Unfortunately the easiest way of getting naive_str_width without adding
-- runtime checks is to load layout.lua twice. Luckily it is somewhat self
-- contained so this shouldn't be a problem.
local naive_str_width
do
local f = assert(io.open("layout.lua"))
local code = f:read("*a"):gsub("\nreturn",
"\nreturn naive_str_width --[[") .. "]]"
f:close()
naive_str_width = assert((loadstring or load)(code))()
end
local gui = flow.widgets
-- "Normalise" the AST by flattening then parsing/unparsing to remove extra
-- values and fix weird floating point offsets
local function normalise_tree(tree)
tree = formspec_ast.flatten(tree)
tree.formspec_version = 6
return assert(formspec_ast.parse(formspec_ast.unparse(tree)))
end
local function render(build_func, ctx, fs_ver)
if type(build_func) ~= "function" then
local tree = build_func
function build_func() return tree end
end
local form = flow.make_gui(build_func)
return form:_render({get_player_name = "test"}, ctx or {}, fs_ver)
end
local function test_render(build_func, output, description)
local tree = render(build_func)
local expected_tree = output
if type(output) == "string" then
expected_tree = assert(formspec_ast.parse(output), "expected output must parse")
end
if expected_tree.type then
expected_tree = assert(render(expected_tree), "if expected output is a flow form, it must render")
end
tree = normalise_tree(tree)
expected_tree = normalise_tree(expected_tree)
assert.same(expected_tree, tree, description)
end
local function render_to_string(tree, pname)
local player = stub_player(pname or "test_player")
local form = flow.make_gui(function()
return table.copy(tree)
end)
local ctx = {}
local fs, event = form:render_to_formspec_string(player, ctx)
return ctx, event, fs
end
describe("Flow", function()
describe("bgcolor settings", function ()
it("renders bgcolor only correctly", function ()
test_render(gui.VBox{ bgcolor = "green" }, [[
size[0.6,0.6]
bgcolor[green]
]])
end)
it("renders fbgcolor only correctly", function ()
test_render(gui.VBox{ fbgcolor = "green" }, [[
size[0.6,0.6]
bgcolor[;;green]
]])
end)
it("renders both correctly", function ()
test_render(gui.VBox{ bgcolor = "orange", fbgcolor = "green" }, [[
size[0.6,0.6]
bgcolor[orange;;green]
]])
end)
it("passes fullscreen setting", function ()
test_render(gui.VBox{ bg_fullscreen = true }, [[
size[0.6,0.6]
bgcolor[;true]
]])
end)
it("passes fullscreen setting when string", function ()
test_render(gui.VBox{ bg_fullscreen = "both" }, [[
size[0.6,0.6]
bgcolor[;both]
]])
end)
it("handles it all together", function ()
test_render(gui.VBox{ bgcolor = "blue", fbgcolor = "red", bg_fullscreen = "neither" }, [[
size[0.6,0.6]
bgcolor[blue;neither;red]
]])
end)
end)
it("renders labels correctly", function()
test_render(gui.Label{label = "Hello world!"}, [[
size[3.12,1]
label[0.3,0.5;Hello world!]
]])
end)
it("spaces elements correctly", function()
-- Taken from flow-playground tutorial
test_render(gui.VBox{
-- Don't rely on label widths
min_w = 10,
gui.Label{label = "Spacing = 0.5:"},
gui.HBox{
spacing = 0.5,
gui.Box{w = 1, h = 1, color = "red"},
gui.Box{w = 1, h = 1, color = "green"},
gui.Box{w = 1, h = 1, color = "blue"},
},
gui.Label{label = "Spacing = 0:"},
gui.HBox{
spacing = 0,
gui.Box{w = 1, h = 1, color = "red"},
gui.Box{w = 1, h = 1, color = "green"},
gui.Box{w = 1, h = 1, color = "blue"},
},
gui.Label{label = "Spacing = 0.2 (default):"},
gui.HBox{
gui.Box{w = 1, h = 1, color = "red"},
gui.Box{w = 1, h = 1, color = "green"},
gui.Box{w = 1, h = 1, color = "blue"},
},
gui.Label{label = "Padding demo:"},
gui.Image{
w = 1, h = 1,
texture_name = "default_glass.png",
padding = 0.5,
},
}, [[
size[10.6,8.6]
container[0.3,0.3]
label[0,0.2;Spacing = 0.5:]
box[0,0.6;1,1;red]
box[1.5,0.6;1,1;green]
box[3,0.6;1,1;blue]
container_end[]
container[0.3,2.1]
label[0,0.2;Spacing = 0:]
box[0,0.6;1,1;red]
box[1,0.6;1,1;green]
box[2,0.6;1,1;blue]
container_end[]
container[0.3,3.9]
label[0,0.2;Spacing = 0.2 (default):]
box[0,0.6;1,1;red]
box[1.2,0.6;1,1;green]
box[2.4,0.6;1,1;blue]
container_end[]
container[0.3,5.7]
label[0,0.2;Padding demo:]
image[4.5,1.1;1,1;default_glass.png]
container_end[]
]])
end)
it("adds elements to redraw_if_changed", function()
local tree, state = render(function(player, ctx)
dummy(ctx.form.test1, ctx.form.test2, ctx.form.test3)
return gui.VBox{
gui.Field{name = "test2"},
gui.Checkbox{name = "test3"},
gui.Checkbox{name = "test4"},
}
end)
assert.same(state.redraw_if_changed, {test2 = true, test3 = true})
end)
it("registers callbacks", function()
local function func() end
local function func2() return true end
local tree, state = render(function(player, ctx)
return gui.VBox{
gui.Label{label = "Callback demo:"},
gui.Button{label = "Click me!", name = "btn", on_event = func},
gui.Field{name = "field", on_event = func2}
}
end)
assert.same(state.callbacks, {field = func2})
assert.same(state.btn_callbacks, {btn = func})
end)
it("handles visible = false", function()
test_render(gui.VBox{
min_w = 10, min_h = 10,
gui.HBox{
spacing = 0.5,
gui.Box{w = 1, h = 1, color = "red"},
gui.Box{w = 1, h = 1, color = "green", visible = false},
gui.Box{w = 1, h = 1, color = "blue"},
},
gui.HBox{
gui.Box{w = 1, h = 1, color = "red"},
gui.Box{w = 1, h = 1, color = "green", visible = false,
expand = true},
gui.Box{w = 1, h = 1, color = "blue"},
},
gui.HBox{
gui.Box{w = 1, h = 1, color = "grey"},
gui.Spacer{},
gui.Box{w = 1, h = 1, color = "grey"},
},
gui.HBox{
gui.Box{w = 1, h = 1, color = "red", expand = true},
gui.Box{w = 1, h = 1, color = "green", visible = false},
gui.Box{w = 1, h = 1, color = "blue"},
},
gui.Box{w = 1, h = 1, expand = true},
}, [[
size[10.6,10.6]
container[0.3,0.3]
box[0,0;1,1;red]
box[3,0;1,1;blue]
container_end[]
container[0.3,1.5]
box[0,0;1,1;red]
box[9,0;1,1;blue]
container_end[]
container[0.3,2.7]
box[0,0;1,1;grey]
box[9,0;1,1;grey]
container_end[]
container[0.3,3.9]
box[0,0;7.6,1;red]
box[9,0;1,1;blue]
container_end[]
box[0.3,5.1;10,5.2;]
]])
end)
it("stacks elements", function()
test_render(gui.Stack{
gui.Button{w = 3, h = 1, label = "1", align_v = "top"},
gui.Image{w = 1, h = 1, align_h = "fill", align_v = "fill",
texture_name = "2"},
gui.Image{w = 1, h = 3, texture_name = "3", visible = false},
gui.Field{name = "4", label = "Test", align_v = "fill"},
gui.Field{name = "5", label = "", align_v = "fill"},
gui.Label{label = "Test", align_h = "centre"},
gui.List{inventory_location = "a", list_name = "b", w = 2, h = 2},
gui.Style{selectors = {"test"}, props = {prop = "value"}},
}, [[
size[3.6,3.6]
button[0.3,0.3;3,1;;1]
image[0.3,0.3;3,3;2]
field_close_on_enter[4;false]
field[0.3,0.7;3,2.6;4;Test;]
field_close_on_enter[5;false]
field[0.3,0.3;3,3;5;;]
style[_#;bgimg=;bgimg_pressed=]
style[_#:hovered,_#:pressed;bgimg=]
image_button[0.3,1.6;3,0.4;blank.png;_#;Test;;false]
image_button[0.3,1.6;3,0.4;blank.png;_#;;;false]
list[a;b;0.675,0.675;2,2]
style[test;prop=value]
]])
end)
it("ignores gui.Nil", function()
test_render(gui.VBox{
min_h = 5, -- Make sure gui.Nil doesn't expand
gui.Box{w = 1, h = 1, color = "red"},
gui.Nil{},
gui.Box{w = 1, h = 1, color = "green"},
}, [[
size[1.6,5.6]
box[0.3,0.3;1,1;red]
box[0.3,1.5;1,1;green]
]])
end)
it("keeps gui.Listcolors invisible", function()
test_render(gui.VBox{
min_h = 5,
gui.Box{w = 1, h = 1, color = "red"},
gui.Listcolors{slot_bg_normal = "red", slot_bg_hover = "blue"},
gui.Box{w = 1, h = 1, color = "green"},
}, [[
size[1.6,5.6]
box[0.3,0.3;1,1;red]
listcolors[red;blue]
box[0.3,1.5;1,1;green]
]])
end)
it("registers inventory formspecs", function ()
local stupid_simple_inv_expected =
"formspec_version[7]" ..
"size[10.35,5.35]" ..
"list[current_player;main;0.3,0.3;8,4]"
local stupid_simple_inv = flow.make_gui(function (p, c)
return gui.List{
inventory_location = "current_player",
list_name = "main",
w = 8,
h = 4,
}
end)
local player = stub_player("test_player")
assert(player:get_inventory_formspec() == "")
stupid_simple_inv:set_as_inventory_for(player)
assert(player:get_inventory_formspec() == stupid_simple_inv_expected)
end)
it("can still show a form when an inventory formspec is shown", function ()
local expected_one = "formspec_version[7]size[1.6,1.6]box[0.3,0.3;1,1;]"
local one = flow.make_gui(function (p, c)
return gui.Box{ w = 1, h = 1 }
end)
local blue = flow.make_gui(function (p, c)
return gui.Box{ w = 1, h = 4, color = "blue" }
end)
local player = stub_player("test_player")
assert(player:get_inventory_formspec() == "")
one:set_as_inventory_for(player)
assert(player:get_inventory_formspec() == expected_one)
blue:show(player)
assert(player:get_inventory_formspec() == expected_one)
end)
describe("render_to_formspec_string", function ()
it("renders the same output as manually calling _render when standalone", function()
local build_func = function()
return gui.VBox{
gui.Box{w = 1, h = 1},
gui.Label{label = "Test", align_h = "centre"},
gui.Field{name = "4", label = "Test", align_v = "fill"}
}
end
local form = flow.make_gui(build_func)
local player = stub_player("test_player")
local fs = form:render_to_formspec_string(player, nil, true)
test_render(build_func, fs)
end)
it("renders nearly the same output as manually calling _render when not standalone", function()
local build_func = function()
return gui.VBox{
gui.Box{w = 1, h = 1},
gui.Label{label = "Test", align_h = "centre"},
gui.Field{name = "4", label = "Test", align_v = "fill"}
}
end
local form = flow.make_gui(build_func)
local player = stub_player("test_player")
local fs, _, info = form:render_to_formspec_string(player)
test_render(
build_func,
("formspec_version[%s]size[%s,%s]"):format(
info.formspec_version,
info.w,
info.h
) .. fs
)
end)
it("passes events through the callback function", function()
local manual_spy
local manual_spy_count = 0
local buttonargs = {
label = "Click me!",
name = "btn",
on_event = function (...)
manual_spy = {...}
manual_spy_count = manual_spy_count + 1
end
}
local form = flow.make_gui(function()
return gui.Button(buttonargs)
end)
local player = stub_player("test_player")
local ctx = {a = 1}
local _, trigger_event = form:render_to_formspec_string(player, ctx, true)
local fields = {btn = 1}
trigger_event(fields)
assert.equals(manual_spy_count, 1, "event passed down only once")
assert.equals(manual_spy[1], player, "player was first arg")
assert.equals(manual_spy[2], ctx, "context was next")
core.get_player_by_name = nil
end)
end)
describe("naive_str_width", function()
it("works in a simple string", function()
local w, h = naive_str_width("Hello world!")
assert.equals(w, 12)
assert.equals(h, 1)
end)
it("works with multi-line strings", function()
local w, h = naive_str_width("Hello world!\nLine 2")
assert.equals(w, 12)
assert.equals(h, 2)
w, h = naive_str_width("Hello world!\nThis is a test")
assert.equals(w, 14)
assert.equals(h, 2)
end)
it("works with Cyrillic script", function()
local w, h = naive_str_width("Привіт Світ")
assert.equals(w, 11)
assert.equals(h, 1)
end)
it("works with full width characters", function()
local w, h = naive_str_width("你好世界\n123456")
assert.equals(w, 8)
assert.equals(h, 2)
end)
it("strips escape codes", function()
local w, h = naive_str_width("\27(T@test)Hello \27Fworld\27E!\27E")
assert.equals(w, 12)
assert.equals(h, 1)
w, h = naive_str_width("\27(c@blue)Test\27(c@#ffffff)\n123")
assert.equals(w, 4)
assert.equals(h, 2)
end)
end)
describe("field validation for", function()
describe("Field", function()
it("passes correct input through", function()
local ctx, event = render_to_string(gui.Field{
name = "a", default = "(default)"
})
assert.equals(ctx.form.a, "(default)")
event({a = "Hello world!"})
assert.equals(ctx.form.a, "Hello world!")
end)
it("strips escape characters", function()
local ctx, event = render_to_string(gui.Field{name = "a"})
assert.equals(ctx.form.a, "")
event({a = "\1\2Hello \3\4world!\n"})
assert.equals(ctx.form.a, "Hello world!")
end)
it("ignores other fields", function()
local ctx, event = render_to_string(gui.Field{name = "a"})
assert.equals(ctx.form.a, "")
event({b = "Hello world!"})
assert.equals(ctx.form.a, "")
end)
end)
describe("Textarea", function()
it("strips escape characters", function()
local ctx, event = render_to_string(gui.Textarea{name = "a"})
assert.equals(ctx.form.a, "")
event({a = "\1\2Hello \3\4world!\n"})
assert.equals(ctx.form.a, "Hello world!\n")
end)
end)
describe("Checkbox", function()
it("converts the result to a boolean", function()
local ctx, event = render_to_string(gui.Checkbox{name = "a"})
assert.equals(ctx.form.a, false)
event({a = "true"})
assert.equals(ctx.form.a, true)
end)
end)
describe("Dropdown", function()
describe("{index_event=false}", function()
it("passes correct input through", function()
local ctx, event, fs = render_to_string(gui.Dropdown{
name = "a", items = {"hello", "world"},
})
assert(fs:find("dropdown%[[^%]]-;true%]") == nil)
assert.equals(ctx.form.a, "hello")
event({a = "world"})
assert.equals(ctx.form.a, "world")
end)
it("ignores malicious input", function()
local ctx, event = render_to_string(gui.Dropdown{
name = "a", items = {"hello", "world"},
})
assert.equals(ctx.form.a, "hello")
event({a = "there"})
assert.equals(ctx.form.a, "hello")
end)
it("uses index_event internally on new clients", function()
local ctx, event, fs = render_to_string(gui.Dropdown{
name = "a", items = {"hello", "world"},
}, "fs6")
assert(fs:find("dropdown%[[^%]]-;true%]") ~= nil)
assert.equals(ctx.form.a, "hello")
event({a = "2"})
assert.equals(ctx.form.a, "world")
end)
it("ignores malicious input on new clients", function()
local ctx, event = render_to_string(gui.Dropdown{
name = "a", items = {"hello", "world"},
}, "fs6")
assert.equals(ctx.form.a, "hello")
event({a = "world"})
assert.equals(ctx.form.a, "hello")
end)
end)
describe("{index_event=true}", function()
it("passes correct input through", function()
local ctx, event = render_to_string(gui.Dropdown{
name = "a", items = {"hello", "world"},
index_event = true,
})
assert.equals(ctx.form.a, 1)
event({a = "2"})
assert.equals(ctx.form.a, 2)
end)
it("ignores malicious input", function()
local ctx, event = render_to_string(gui.Dropdown{
name = "a", items = {"hello", "world"},
index_event = true,
})
assert.equals(ctx.form.a, 1)
event({a = "nan"})
assert.equals(ctx.form.a, 1)
end)
it("converts numbers to integers", function()
local ctx, event = render_to_string(gui.Dropdown{
name = "a", items = {"hello", "world"},
index_event = true,
})
assert.equals(ctx.form.a, 1)
event({a = "2.1"})
assert.equals(ctx.form.a, 2)
end)
it("ignores out of bounds input", function()
local ctx, event = render_to_string(gui.Dropdown{
name = "a", items = {"hello", "world"},
index_event = true,
})
assert.equals(ctx.form.a, 1)
event({a = "3"})
assert.equals(ctx.form.a, 1)
end)
end)
end)
describe("Textlist", function()
it("converts the result to a number", function()
local ctx, event = render_to_string(gui.Textlist{
name = "a", listelems = {"hello", "world"},
selected_idx = 2
})
assert.equals(ctx.form.a, 2)
event({a = "CHG:1"})
assert.equals(ctx.form.a, 1)
end)
it("ignores out of bounds values", function()
local ctx, event = render_to_string(gui.Textlist{
name = "a", listelems = {"hello", "world"},
selected_idx = 2
})
assert.equals(ctx.form.a, 2)
event({a = "CHG:3"})
assert.equals(ctx.form.a, 2)
end)
end)
describe("Table", function()
it("converts the result to a number", function()
local ctx, event = render_to_string(gui.Table{
name = "a", cells = {"hello", "world"},
selected_idx = 2
})
assert.equals(ctx.form.a, 2)
event({a = "CHG:1:0"})
assert.equals(ctx.form.a, 1)
end)
it("ignores out of bounds values", function()
local ctx, event = render_to_string(gui.Table{
name = "a", cells = {"hello", "world"}
})
assert.equals(ctx.form.a, 1)
event({a = "CHG:3:0"})
assert.equals(ctx.form.a, 1)
end)
it("does not replace zero values", function()
local ctx, event = render_to_string(gui.Table{
name = "a", cells = {"hello", "world"}, selected_idx = 0
})
assert.equals(ctx.form.a, 0)
event({a = "INV"})
assert.equals(ctx.form.a, 0)
end)
it("understands tablecolumns", function()
local ctx, event = render_to_string(gui.VBox{
gui.TableColumns{
tablecolumns = {
{type = "text", opts = {}},
{type = "text", opts = {}},
}
},
gui.Table{
name = "a", cells = {"1", "2", "3", "4", "5", "6"},
}
})
assert.equals(ctx.form.a, 1)
event({a = "CHG:3:0"})
assert.equals(ctx.form.a, 3)
end)
it("ignores out-of-bounds values with tablecolumns", function()
local ctx, event = render_to_string(gui.VBox{
gui.TableColumns{
tablecolumns = {
{type = "text", opts = {}},
{type = "text", opts = {}},
}
},
gui.Table{
name = "a", cells = {"1", "2", "3", "4", "5", "6"},
}
})
assert.equals(ctx.form.a, 1)
event({a = "CHG:4:0"})
assert.equals(ctx.form.a, 1)
end)
end)
describe("Button", function()
it("does not save form input", function()
local ctx, event = render_to_string(gui.Button{name = "a"})
assert.equals(ctx.form.a, nil)
event({a = "test"})
assert.equals(ctx.form.a, nil)
end)
it("only calls a single callback", function()
local f, b = 0, 0
local ctx, event = render_to_string(gui.VBox{
gui.Field{name = "a", on_event = function() f = f + 1 end},
gui.Button{name = "b", on_event = function() b = b + 1 end},
gui.Button{name = "c", on_event = function() b = b + 1 end}
})
event({})
assert.equals(f, 0)
assert.equals(b, 0)
event({a = "test", b = "test", c = "test"})
assert.equals(f, 1)
assert.equals(b, 1)
event({b = "test", c = "test"})
assert.equals(f, 1)
assert.equals(b, 2)
event({c = "test"})
assert.equals(f, 1)
assert.equals(b, 3)
end)
end)
end)
describe("extra field parameters", function()
it("default to sensible values", function()
test_render(gui.Field{
w = 1, h = 1, name = "test",
}, [[
size[1.6,1.6]
field_close_on_enter[test;false]
field[0.3,0.3;1,1;test;;]
]])
end)
it("can enable field_enter_after_edit", function()
test_render(gui.Field{
w = 1, h = 1, name = "test", enter_after_edit = true
}, [[
size[1.6,1.6]
field_enter_after_edit[test;true]
field_close_on_enter[test;false]
field[0.3,0.3;1,1;test;;]
]])
end)
end)
describe("inline style parser", function()
it("parses inline styles correctly", function()
test_render(gui.Box{
w = 1, h = 1, color = "blue",
style = {hello = "world"}
}, [[
size[1.6,1.6]
style_type[box;hello=world]
box[0.3,0.3;1,1;blue]
style_type[box;hello=]
]])
end)
it("parses inline styles correctly", function()
test_render(gui.Button{
w = 1, h = 1, name = "mybtn",
style = {hello = "world"}
}, [[
size[1.6,1.6]
style[mybtn;hello=world]
button[0.3,0.3;1,1;mybtn;]
]])
end)
it("takes advantage of auto-generated names", function()
test_render(gui.Button{
w = 1, h = 1, on_event = function() end,
style = {hello = "world"}
}, [[
size[1.6,1.6]
style[_#0;hello=world]
button[0.3,0.3;1,1;_#0;]
]])
end)
it("supports advanced selectors", function()
test_render(gui.Button{
w = 1, h = 1, name = "mybtn",
style = {
bgimg = "btn.png",
{sel = "$hovered", bgimg = "hover.png"},
{sel = "$focused", bgimg = "focus.png"},
},
}, [[
size[1.6,1.6]
style[mybtn;bgimg=btn.png]
style[mybtn:hovered;bgimg=hover.png]
style[mybtn:focused;bgimg=focus.png]
button[0.3,0.3;1,1;mybtn;]
]])
end)
it("supports advanced selectors on non-named nodes", function()
test_render(gui.Box{
w = 1, h = 1, color = "blue",
style = {
bgimg = "btn.png",
{sel = "$hovered", bgimg = "hover.png"},
{sel = "$focused", bgimg = "focus.png"},
},
}, [[
size[1.6,1.6]
style_type[box;bgimg=btn.png]
style_type[box:hovered;bgimg=hover.png]
style_type[box:focused;bgimg=focus.png]
box[0.3,0.3;1,1;blue]
style_type[box:focused;bgimg=]
style_type[box:hovered;bgimg=]
style_type[box;bgimg=]
]])
end)
it("supports multiple selectors", function()
test_render(gui.Button{
w = 1, h = 1, name = "mybtn",
style = {
bgimg = "btn.png",
{sel = "$hovered, $focused,$pressed", bgimg = "hover.png"},
},
}, [[
size[1.6,1.6]
style[mybtn;bgimg=btn.png]
style[mybtn:hovered,mybtn:focused,mybtn:pressed;bgimg=hover.png]
button[0.3,0.3;1,1;mybtn;]
]])
end)
it("allows reuse of the same table", function()
local style = {
bgimg = "btn.png",
{sel = "$hovered", bgimg = "hover.png"},
}
test_render(gui.VBox{
gui.Button{w = 1, h = 1, name = "btn1", style = style},
gui.Button{w = 1, h = 1, name = "btn2", style = style},
}, [[
size[1.6,2.8]
style[btn1;bgimg=btn.png]
style[btn1:hovered;bgimg=hover.png]
button[0.3,0.3;1,1;btn1;]
style[btn2;bgimg=btn.png]
style[btn2:hovered;bgimg=hover.png]
button[0.3,1.5;1,1;btn2;]
]])
end)
end)
describe("tooltip insertion", function()
it("works with named elements", function()
test_render(gui.Button{
w = 1, h = 1, name = "mybtn",
tooltip = "test",
}, [[
size[1.6,1.6]
tooltip[mybtn;test]
button[0.3,0.3;1,1;mybtn;]
]])
end)
it("works with unnamed elements", function()
-- The tooltip[] added here takes the list spacing into account
test_render(gui.List{
w = 2, h = 2, padding = 1,
tooltip = "test"
}, [[
size[4.25,4.25]
tooltip[1,1;2.25,2.25;test]
list[;;1,1;2,2]
]])
end)
end)
describe("Flow.embed", function()
local embedded_form = flow.make_gui(function(_, x)
return gui.VBox{
gui.Label{label = "This is the embedded form!"},
gui.Field{name = "test2"},
x.a and gui.Label{label = "A is true!" .. x.a} or gui.Nil{}
}
end)
it("raises an error if called outside of a form context", function()
assert.has_error(function()
embedded_form:embed{
-- It's fully possible that the API user would have access
-- to a player reference
player = stub_player"test_player",
name = "theprefix"
}
end)
end)
it("returns a flow widget", function ()
test_render(function(p, _)
return gui.HBox{
gui.Label{label = "asdft"},