initial: inventory-list-display-test v0.1.0 — 9 assertions
Covers: create round-trip, non-container loud-error, action register/unregister lifecycle, duplicate label + non-function callback loud-errors, empty default action-set, contents ordering via _test_get_rows, default icon-resolver property reads, custom icon-resolver override via set_icon_resolver.
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init.lua
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138
init.lua
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-- lib-core.inventory-list-display-test — v0.1.0
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-- 9 assertions covering widget creation, action lifecycle, resolver
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-- overrides, and content ordering.
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-- Pattern follows P.2.4 Test-Module-Pattern; TAP output via engine.test.*
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local panel = require("lib-core.panel")
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local composition = require("lib-core.composition")
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local inventory = require("lib-core.inventory-list")
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local display = require("lib-core.inventory-list-display")
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local T = engine.test
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local M = {}
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-- ----------------------------------------------------------------
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-- Template definitions (shared across all assertions in this run)
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-- All template IDs are unique to this test lib to avoid clashes.
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-- ----------------------------------------------------------------
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-- Container template: kind="list", no constraints.
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composition.define_template{
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id = "test_backpack",
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properties = { position = {x = 0, y = 0} },
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tags = {"renderable"},
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container = { kind = "list" },
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}
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-- Item template: individual stack_mode + Atlas-UV properties for icon tests.
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composition.define_template{
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id = "test_item",
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properties = {
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stack_mode = "individual",
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sprite_atlas = "tex.png",
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sprite_uv = {x = 0, y = 0, w = 8, h = 8},
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position = {x = 0, y = 0},
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},
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tags = {"renderable", "item"},
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}
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function M.run_tests(ctx)
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local bp = composition.create{template = "test_backpack"}
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-- ================================================================
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-- 1. create returns widget_def with render + handle_input + title
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-- ================================================================
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local widget = display.create(bp, { title = "Backpack" })
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T.assert(widget ~= nil, "create returns non-nil")
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T.equals(type(widget.render), "function", "widget has render fn")
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T.equals(type(widget.handle_input), "function", "widget has handle_input")
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T.equals(widget.title, "Backpack", "title set from opts")
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-- ================================================================
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-- 2. create with non-container entity -> loud-error
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-- test_item has no container block, so composition.get_container
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-- returns nil, and display.create loud-errors.
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-- ================================================================
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local plain = composition.create{template = "test_item"}
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local ok2 = pcall(display.create, plain)
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T.assert(not ok2, "create(non_container) loud-errors")
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-- ================================================================
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-- 3. register_action + unregister_action round-trip (no error)
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-- ================================================================
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display.register_action(widget, "Drop", function(item, c) end)
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display.register_action(widget, "Inspect", function(item, c) end)
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display.unregister_action(widget, "Drop")
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T.assert(true, "register/unregister round-trip completes without error")
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-- ================================================================
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-- 4. Duplicate action label -> loud-error
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-- "Drop" was unregistered above; re-register then attempt duplicate.
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-- ================================================================
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display.register_action(widget, "Drop", function() end)
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local ok4 = pcall(display.register_action, widget, "Drop", function() end)
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T.assert(not ok4, "duplicate action label loud-errors")
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-- ================================================================
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-- 5. Non-function callback -> loud-error
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-- ================================================================
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local ok5 = pcall(display.register_action, widget, "X", "not_fn")
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T.assert(not ok5, "non-function callback loud-errors")
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-- ================================================================
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-- 6. Default action-set is empty; unregister of unknown label is no-op
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-- A fresh widget has no implicit actions. Unregistering a missing
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-- label must not error (idempotent).
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-- ================================================================
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local widget2 = display.create(composition.create{template = "test_backpack"})
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display.unregister_action(widget2, "Drop") -- no-op: not registered
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T.assert(true, "default action-set empty; unregister of unknown label is no-op")
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-- ================================================================
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-- 7. Rows match inventory.contents order (_test_get_rows)
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-- ================================================================
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local item_a = composition.create{template = "test_item"}
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local item_b = composition.create{template = "test_item"}
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inventory.add(bp, item_a)
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inventory.add(bp, item_b)
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local rows = display._test_get_rows(widget)
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T.assert(#rows == 2, "rows reflect inventory.contents count")
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-- Verify ordering: item_a was added first, must appear first.
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-- Compare by composition.reg_id (stable identity; entity userdata has no __eq).
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local rid_a = item_a:get_property("composition.reg_id")
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local rid_r1 = rows[1]:get_property("composition.reg_id")
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T.assert(rid_a ~= nil and rid_r1 == rid_a,
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"rows[1] matches item_a (insertion order preserved)")
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-- ================================================================
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-- 8. Default icon-resolver reads sprite_atlas + sprite_uv from properties
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-- ================================================================
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local icon = display._test_resolve_icon(widget, item_a)
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T.assert(icon ~= nil, "default icon-resolver returns non-nil table")
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T.equals(icon.atlas, "tex.png", "icon.atlas matches sprite_atlas property")
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T.equals(icon.uv.x, 0, "icon.uv.x matches sprite_uv.x property")
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-- ================================================================
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-- 9. Custom icon-resolver invoked after set_icon_resolver
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-- ================================================================
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local custom_called = false
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display.set_icon_resolver(widget, function(item)
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custom_called = true
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return {atlas = "custom.png", uv = {x = 1, y = 2, w = 3, h = 4}}
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end)
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local icon2 = display._test_resolve_icon(widget, item_a)
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T.assert(custom_called, "custom icon-resolver was invoked after set_icon_resolver")
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T.equals(icon2.atlas, "custom.png", "custom resolver returns custom atlas")
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end
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return M
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