Add test that "file" shows "main"

This adds a new test that checks that the "file" command will show the
program's "main".

gdb/testsuite/ChangeLog
2019-07-27  Tom Tromey  <tom@tromey.com>

	* gdb.tui/main.exp: New file.

1 files changed, 34 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.tui/main.exp b/gdb/testsuite/gdb.tui/main.exp
new file mode 100644
index 0000000..eab28de
--- /dev/null
+++ b/gdb/testsuite/gdb.tui/main.exp
@@ -0,0 +1,34 @@
+# Copyright 2019 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# Test that "file" shows "main".
+
+load_lib "tuiterm.exp"
+
+standard_testfile tui-layout.c
+
+if {[build_executable "failed to prepare" ${testfile} ${srcfile}] == -1} {
+    return -1
+}
+
+# Note: don't pass the executable here
+Term::clean_restart 24 80
+
+if {![Term::enter_tui]} {
+    unsupported "TUI not supported"
+}
+
+Term::command "file [standard_output_file $testfile]"
+Term::check_contents "show main after file" ">|21 *return 0"