--- /dev/null
+" Tests for editing the command line.
+
+func Test_complete_tab()
+ call writefile(['testfile'], 'Xtestfile')
+ call feedkeys(":e Xtest\t\r", "tx")
+ call assert_equal('testfile', getline(1))
+ call delete('Xtestfile')
+endfunc
+
+func Test_complete_list()
+ " We can't see the output, but at least we check the code runs properly.
+ call feedkeys(":e test\<C-D>\r", "tx")
+ call assert_equal('test', expand('%:t'))
+endfunc
+
+func Test_complete_wildmenu()
+ call writefile(['testfile1'], 'Xtestfile1')
+ call writefile(['testfile2'], 'Xtestfile2')
+ set wildmenu
+ call feedkeys(":e Xtest\t\t\r", "tx")
+ call assert_equal('testfile2', getline(1))
+
+ call delete('Xtestfile1')
+ call delete('Xtestfile2')
+ set nowildmenu
+endfunc