patch 8.0.1526: no test using a screen dump yet
Problem: No test using a screen dump yet.
Solution: Add a test for C syntax highlighting. Add helper functions.
diff --git a/src/testdir/screendump.vim b/src/testdir/screendump.vim
new file mode 100644
index 0000000..5131b93
--- /dev/null
+++ b/src/testdir/screendump.vim
@@ -0,0 +1,65 @@
+" Functions shared by tests making screen dumps.
+
+" Only load this script once.
+if exists('*RunVimInTerminal')
+ finish
+endif
+
+source shared.vim
+
+" Run Vim with "arguments" in a new terminal window.
+" By default uses a size of 20 lines and 75 columns.
+" Returns the buffer number of the terminal.
+"
+" Options is a dictionary (not used yet).
+func RunVimInTerminal(arguments, options)
+ " Make a horizontal and vertical split, so that we can get exactly the right
+ " size terminal window. Works only when we currently have one window.
+ call assert_equal(1, winnr('$'))
+ split
+ vsplit
+
+ " Always doo this with 256 colors and a light background.
+ set t_Co=256
+ hi Normal ctermfg=0 ctermbg=15
+
+ let cmd = GetVimCommandClean()
+ let cmd .= ' ' . a:arguments
+ let buf = term_start(cmd, {'curwin': 1, 'term_rows': 20, 'term_cols': 75})
+ call assert_equal([20, 75], term_getsize(buf))
+
+ return buf
+endfunc
+
+" Stop a Vim running in terminal buffer "buf".
+func StopVimInTerminal(buf)
+ call assert_equal("running", term_getstatus(a:buf))
+ call term_sendkeys(a:buf, ":qa!\<cr>")
+ call WaitFor('term_getstatus(' . a:buf . ') == "finished"')
+ only!
+endfunc
+
+" Verify that Vim running in terminal buffer "buf" matches the screen dump.
+" The file name used is "dumps/{filename}.dump".
+" Will wait for up to a second for the screen dump to match.
+func VerifyScreenDump(buf, filename)
+ let reference = 'dumps/' . a:filename . '.dump'
+ let testfile = a:filename . '.dump.failed'
+
+ let i = 0
+ while 1
+ call delete(testfile)
+ call term_dumpwrite(a:buf, testfile)
+ if readfile(reference) == readfile(testfile)
+ call delete(testfile)
+ break
+ endif
+ if i == 100
+ " Leave the test file around for inspection.
+ call assert_report('See dump file difference: call term_dumpdiff("' . testfile . '", "' . reference . '")')
+ break
+ endif
+ sleep 10m
+ let i += 1
+ endwhile
+endfunc