feat: good ass testing going on here

lua/harpoon2/test/harpoon_spec.lua

@@ -1,3 +1,4 @@
+local utils = require("harpoon2.test.utils")
 local Data = require("harpoon2.data")
 local harpoon = require("harpoon2")
 
@@ -18,16 +19,13 @@ describe("harpoon", function()
         local file_name = "/tmp/harpoon-test"
         local row = 3
         local col = 1
-        local bufnr = vim.fn.bufnr(file_name, true)
         local default_key = harpoon:info().default_key
-        vim.api.nvim_set_current_buf(bufnr)
-        vim.api.nvim_buf_set_text(0, 0, 0, 0, 0, {
+        local bufnr = utils.create_file(file_name, {
             "foo",
             "bar",
             "baz",
             "qux"
-        })
-        vim.api.nvim_win_set_cursor(0, {row, col})
+        }, row, col)
 
         local list = harpoon:list():append()
         harpoon:sync()
@@ -36,6 +34,46 @@ describe("harpoon", function()
             [default_key] = list:encode()
         })
     end)
+
+    it("prepend/append double add", function()
+        local default_key = harpoon:info().default_key
+        local file_name_1 = "/tmp/harpoon-test"
+        local row_1 = 3
+        local col_1 = 1
+
+        local file_name_2 = "/tmp/harpoon-test-2"
+        local row_2 = 1
+        local col_2 = 2
+
+        local contents = { "foo", "bar", "baz", "qux" }
+
+        local bufnr_1 = utils.create_file(file_name_1, contents, row_1, col_1)
+        local list = harpoon:list():append()
+
+        utils.create_file(file_name_2, contents, row_2, col_2)
+        harpoon:list():prepend()
+
+        harpoon:sync()
+
+        eq(harpoon:dump(), {
+            [default_key] = list:encode()
+        })
+
+        eq(list.items, {
+            {value = file_name_2, context = {row = row_2, col = col_2}},
+            {value = file_name_1, context = {row = row_1, col = col_1}},
+        })
+
+        harpoon:list():append()
+        vim.api.nvim_set_current_buf(bufnr_1)
+        harpoon:list():prepend()
+
+        eq(list.items, {
+            {value = file_name_2, context = {row = row_2, col = col_2}},
+            {value = file_name_1, context = {row = row_1, col = col_1}},
+        })
+
+    end)
 end)
 
 

lua/harpoon2/test/utils.lua

@@ -0,0 +1,17 @@
+
+local M = {}
+
+---@param name string
+---@param contents string[]
+function M.create_file(name, contents, row, col)
+    local bufnr = vim.fn.bufnr(name, true)
+    vim.api.nvim_set_current_buf(bufnr)
+    vim.api.nvim_buf_set_text(0, 0, 0, 0, 0, contents)
+    if row then
+        vim.api.nvim_win_set_cursor(0, {row, col})
+    end
+
+    return bufnr
+end
+
+return M