fix: Handle no variable name

Author: Andrew Ferrier

lua/debugprint/init.lua

@@ -138,6 +138,14 @@ M.debugprint_cache = function(opts)
 
             if opts.variable_name == nil then
                 opts.variable_name = vim.fn.input("Variable name: ")
+
+                if opts.variable_name == nil or opts.variable_name == "" then
+                    vim.notify(
+                        "No variable name entered.",
+                        vim.log.levels.WARN
+                    )
+                    return
+                end
             end
         end
 

tests/debugprint.lua

@@ -144,6 +144,24 @@ describe("can do variable debug statement insertion", function()
             "bar",
         })
     end)
+
+    it("entering no name gives an error", function()
+        local filename = init_file({
+            "foo",
+            "bar",
+        }, "lua", 1, 0)
+
+        feedkeys("g?v<CR>")
+        assert.are.same(
+            "No variable name entered.",
+            notify_message
+        )
+
+        check_lines({
+            "foo",
+            "bar",
+        })
+    end)
 end)
 
 describe("can do various file types", function()