fix(commands): validate crush width input

lua/neocrush/commands.lua

@@ -31,10 +31,10 @@ function M.create(neocrush)
 
   vim.api.nvim_create_user_command('CrushWidth', function(opts)
     local width = tonumber(opts.args)
-    if width then
+    if width and width >= 1 then
       terminal.set_width(width)
     else
-      vim.notify('Usage: CrushWidth <number>', vim.log.levels.ERROR)
+      vim.notify('Usage: CrushWidth <number >= 1>', vim.log.levels.ERROR)
     end
   end, { nargs = 1, desc = 'Set Crush terminal width' })
 

lua/neocrush/terminal.lua

@@ -161,11 +161,19 @@ end
 
 --- Set the terminal width.
 ---@param width integer Width in columns
+---@return boolean updated True when the width was accepted
 function M.set_width(width)
+  if width < 1 then
+    vim.notify('Crush width must be at least 1 column', vim.log.levels.ERROR)
+    return false
+  end
+
   config.terminal_width = width
   if crush_win and vim.api.nvim_win_is_valid(crush_win) then
     vim.api.nvim_win_set_width(crush_win, config.terminal_width)
   end
+
+  return true
 end
 
 --- Run `crush logs` and load the output into a new buffer.

tests/commands_spec.lua

@@ -1,6 +1,7 @@
 ---@diagnostic disable: undefined-field
 
 local neocrush = require 'neocrush'
+local terminal = require 'neocrush.terminal'
 
 describe('neocrush.commands', function()
   before_each(function()
@@ -38,6 +39,16 @@ describe('neocrush.commands', function()
       assert.is_not_nil(cmds.CrushFocusToggle)
     end)
 
+    it('should register CrushFocusOn command', function()
+      local cmds = vim.api.nvim_get_commands {}
+      assert.is_not_nil(cmds.CrushFocusOn)
+    end)
+
+    it('should register CrushFocusOff command', function()
+      local cmds = vim.api.nvim_get_commands {}
+      assert.is_not_nil(cmds.CrushFocusOff)
+    end)
+
     it('should register CrushLogs command', function()
       local cmds = vim.api.nvim_get_commands {}
       assert.is_not_nil(cmds.CrushLogs)
@@ -68,4 +79,29 @@ describe('neocrush.commands', function()
       assert.is_not_nil(cmds.CrushCvmLocal)
     end)
   end)
+
+  describe('CrushWidth validation', function()
+    it('should reject widths smaller than 1', function()
+      local original_notify = vim.notify
+      local original_set_width = terminal.set_width
+      local messages = {}
+      local called = false
+
+      vim.notify = function(msg)
+        table.insert(messages, msg)
+      end
+      terminal.set_width = function(width)
+        called = true
+        return original_set_width(width)
+      end
+
+      vim.cmd 'CrushWidth 0'
+
+      assert.is_false(called)
+      assert.truthy(messages[1]:find 'number >= 1')
+
+      terminal.set_width = original_set_width
+      vim.notify = original_notify
+    end)
+  end)
 end)

tests/terminal_spec.lua

@@ -56,6 +56,28 @@ describe('neocrush.terminal', function()
     end)
   end)
 
+  describe('set_width', function()
+    it('should reject widths smaller than 1', function()
+      local original_notify = vim.notify
+      local messages = {}
+
+      vim.notify = function(msg)
+        table.insert(messages, msg)
+      end
+
+      local ok = terminal.set_width(0)
+
+      assert.is_false(ok)
+      assert.truthy(messages[1]:find 'at least 1 column')
+
+      vim.notify = original_notify
+    end)
+
+    it('should accept positive widths', function()
+      assert.is_true(terminal.set_width(42))
+    end)
+  end)
+
   describe('close', function()
     it('should not error when no terminal is open', function()
       assert.has_no.errors(function()