[pob1-port] Fix Cord Belt anoint comparison tooltip (#1838)

* Apply changes from PathOfBuildingCommunity/PathOfBuilding#9826

* Fix logic

---------

Co-authored-by: mcagnion <mcagnion@users.noreply.github.com>
Co-authored-by: LocalIdentity <localidentity2@gmail.com>

Author: 3 people

spec/System/TestItemTools_spec.lua

@@ -53,4 +53,53 @@ describe("TestItemTools", function()
 		assert.are.equals(0.5, item.rangeLineList[1].range)
 		assert.are.equals(0, item.baseModList:Sum("BASE", nil, "PowerChargesMax"))
 	end)
-end)
+
+	it("uses the displayed item slot for anoint comparison tooltips", function()
+		if not common.classes.ItemsTab then
+			LoadModule("Classes/ItemsTab")
+		end
+
+		local function assertAnointUsesSlot(rawItem, expectedSlot)
+			local item = new("Item", rawItem)
+			local overrides = { }
+			local fakeItemsTab = setmetatable({
+				displayItem = item,
+				build = {
+					spec = { allocNodes = { } },
+					calcsTab = {
+						GetMiscCalculator = function()
+							return function(override)
+								table.insert(overrides, override)
+								return { }
+							end
+						end,
+					},
+					AddStatComparesToTooltip = function()
+						return 1
+					end,
+				},
+			}, common.classes.ItemsTab)
+			local tooltip = {
+				AddLine = function() end,
+			}
+
+			fakeItemsTab:AppendAnointTooltip(tooltip, { id = 1, dn = "Abasement" })
+
+			assert.are.equals(expectedSlot, overrides[1].repSlotName)
+			assert.are.equals(expectedSlot, overrides[2].repSlotName)
+		end
+
+		assertAnointUsesSlot([[
+			Rarity: Rare
+			Dire Thread
+			Plate Belt
+			Can be Anointed
+			]], "Belt")
+		assertAnointUsesSlot([[
+			Rarity: Rare
+			Spark Loop
+			Ruby Ring
+			Can be Anointed
+			]], "Ring 1")
+	end)
+end)

src/Classes/ItemsTab.lua

@@ -2292,7 +2292,7 @@ function ItemsTabClass:anointItem(node)
 	return item
 end
 
----Appends tooltip information for anointing a new passive tree node onto the currently editing amulet
+---Appends tooltip information for anointing a new passive tree node onto the currently editing item
 ---@param tooltip table @The tooltip to append into
 ---@param node table @The passive tree node that will be anointed, or nil to remove the current anoint.
 function ItemsTabClass:AppendAnointTooltip(tooltip, node, actionText)
@@ -2326,8 +2326,9 @@ function ItemsTabClass:AppendAnointTooltip(tooltip, node, actionText)
 		header = "^7"..actionText.." nothing will give you: "
 	end
 	local calcFunc = self.build.calcsTab:GetMiscCalculator()
-	local outputBase = calcFunc({ repSlotName = "Amulet", repItem = self.displayItem })
-	local outputNew = calcFunc({ repSlotName = "Amulet", repItem = self:anointItem(node) })
+	local repSlotName = self.displayItem:GetPrimarySlot()
+	local outputBase = calcFunc({ repSlotName = repSlotName, repItem = self.displayItem })
+	local outputNew = calcFunc({ repSlotName = repSlotName, repItem = self:anointItem(node) })
 	local numChanges = self.build:AddStatComparesToTooltip(tooltip, outputBase, outputNew, header)
 	if node and numChanges == 0 then
 		tooltip:AddLine(14, "^7"..actionText.." "..node.dn.." changes nothing.")