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Index: usr.bin/tail/tests/tail_test.sh
===================================================================
--- usr.bin/tail/tests/tail_test.sh
+++ usr.bin/tail/tests/tail_test.sh
@@ -272,6 +272,85 @@
-x '(tail -n 856 ints; echo exit code: $? >&2) | sleep 2'
}
+atf_test_case stdin
+stdin_head()
+{
+ atf_set "descr" "Check basic operations on standard input"
+}
+stdin_body()
+{
+ seq 1 5 > infile
+ seq 1 5 > expectfile
+ seq 5 1 > expectfile_r
+
+ tail < infile > outfile
+ tail -r < infile > outfile_r
+
+ atf_check cmp expectfile outfile
+ atf_check cmp expectfile_r outfile_r
+}
+
+atf_test_case follow
+follow_head()
+{
+ atf_set "descr" "Basic regression test for -f"
+}
+follow_body()
+{
+ local pid
+
+ seq 1 5 > expectfile
+ seq 1 3 > infile
+ tail -f infile > outfile &
+ pid=$!
+ sleep 0.1
+ seq 4 5 >> infile
+ sleep 0.1
+ atf_check cmp expectfile outfile
+ atf_check kill $pid
+}
+
+atf_test_case follow_stdin
+follow_stdin_head()
+{
+ atf_set "descr" "Verify that -f works with files piped to standard input"
+}
+follow_stdin_body()
+{
+ local pid
+
+ seq 1 5 > expectfile
+ seq 1 3 > infile
+ tail -f < infile > outfile &
+ pid=$!
+ sleep 0.1
+ seq 4 5 >> infile
+ sleep 0.1
+ atf_check cmp expectfile outfile
+ atf_check kill $pid
+}
+
+atf_test_case follow_rename
+follow_rename_head()
+{
+ atf_set "descr" "Verify that -F works"
+}
+follow_rename_body()
+{
+ local pid
+
+ seq 1 5 > expectfile
+ seq 1 3 > infile
+ tail -F infile > outfile &
+ pid=$!
+ seq 4 5 > infile_new
+ atf_check mv infile infile_old
+ atf_check mv infile_new infile
+ # tail -F polls for a new file every 1s.
+ sleep 2
+ atf_check cmp expectfile outfile
+ atf_check kill $pid
+}
atf_init_test_cases()
{
@@ -289,4 +368,8 @@
atf_add_test_case longfile_rc145782_longlines
atf_add_test_case longfile_rn2500
atf_add_test_case broken_pipe
+ atf_add_test_case stdin
+ atf_add_test_case follow
+ atf_add_test_case follow_stdin
+ atf_add_test_case follow_rename
}

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