busybox/testsuite/grep.tests
Rob Landley 48c6157eb9 Fix the test suite so that individual *.tests files can be run ala
COMMAND=sort ./sort.tests
So we can compare against non-busybox versions, and possibly our testsuite
will be useful to somebody like the Linux Test Project someday.

Redid testing.sh to add new command, "optional", to skip tests that require
certain features.  (use: `optional FEATURE_SORT_BIG`, or `optional ""` to
stop skipping.)  Note that optional is a NOP if the environment variable
"OPTIONFLAGS" is blank, so although we're marking up the tests with busybox
specific knowledge, it doesn't interfere with running the tests without
busybox.

Moved setting the "OPTIONFLAGS" environment variable to runtest.  Philosophy:
busybox-specific stuff belongs in runtest; both testing.sh and the tests
themselves should be as busybox-agnostic as possible.

Moved detecting that a command isn't in busybox at all (hence skipping the
entire command.tests file) to runtests.  Rationale: optional can't currently
test for more than one feature at a time, so if we clear anything with
optional "" we might perform tests we don't want to.

Marked up busybox.tests to know which tests need CAT enabled.  Fixed up other
tests to be happy with new notation.

I suspect egrep should be appended to grep.  It's a sub-feature, really...
2005-11-07 08:50:53 +00:00

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#!/bin/sh
# grep tests.
# Copyright 2005 by Rob Landley <rob@landley.net>
# Licensed under GPL v2, see file LICENSE for details.
# AUDIT:
[ ${#COMMAND} -eq 0 ] && COMMAND=grep
. testing.sh
# testing "test name" "options" "expected result" "file input" "stdin"
# file input will be file called "input"
# test can create a file "actual" instead of writing to stdout
# Test exit status
testing "grep (exit with error)" "nonexistent 2> /dev/null ; echo \$?" \
"1\n" "" ""
testing "grep (exit success)" "grep $0 > /dev/null 2>&1 ; echo \$?" "0\n" \
"" ""
# Test various data sources and destinations
testing "grep (default to stdin)" "two" "two\n" "" \
"one\ntwo\nthree\nthree\nthree\n"
testing "grep - (specify stdin)" "two -" "two\n" "" \
"one\ntwo\nthree\nthree\nthree\n"
testing "grep input (specify file)" "two input" "two\n" \
"one\ntwo\nthree\nthree\nthree\n" ""
# Note that this assumes actual is empty.
testing "grep input actual (two files)" "two input actual 2> /dev/null" \
"input:two\n" "one\ntwo\nthree\nthree\nthree\n" ""
testing "grep - infile (specify stdin and file)" "two - input" \
"(standard input):two\ninput:two\n" "one\ntwo\nthree\n" \
"one\ntwo\ntoo\nthree\nthree\n"
# Check if we see the correct return value if both stdin and non-existing file
# are given.
testing "grep - nofile (specify stdin and nonexisting file)" \
"two - nonexistent 2> /dev/null ; echo \$?" \
"(standard input):two\n(standard input):two\n2\n" \
"" "one\ntwo\ntwo\nthree\nthree\nthree\n"
testing "grep -q - nofile (specify stdin and nonexisting file, no match)" \
"-q nomatch - nonexistent 2> /dev/null ; echo \$?" \
"2\n" "" "one\ntwo\ntwo\nthree\nthree\nthree\n"
# SUSv3: If the -q option is specified, the exit status shall be zero
# if an input line is selected, even if an error was detected.
testing "grep -q - nofile (specify stdin and nonexisting file, match)" \
"-q two - nonexistent ; echo \$?" \
"0\n" "" "one\ntwo\ntwo\nthree\nthree\nthree\n"
# Test various command line options
# -s no error messages
testing "grep -s nofile (nonexisting file, no match)" \
"-s nomatch nonexistent ; echo \$?" "2\n" "" ""
testing "grep -s nofile - (stdin and nonexisting file, match)" \
"-s domatch nonexistent - ; echo \$?" "(standard input):domatch\n2\n" \
"" "nomatch\ndomatch\nend\n"
# This doesn't match GNU behaviour (Binary file input matches)
# acts like GNU grep -a
testing "grep handles binary files" "foo input" "foo\n" "\0foo\n\n" ""
# This doesn't match GNU behaviour (Binary file (standard input) matches)
# acts like GNU grep -a
testing "grep handles binary stdin" "foo" "foo\n" "" "\0foo\n\n"
testing "grep matches NUL" ". input > /dev/null 2>&1 ; echo \$?" "0\n" "\0\n" ""
# -e regex
testing "grep handles multiple regexps" "-e one -e two input ; echo \$?" \
"one\ntwo\n0\n" "one\ntwo\n" ""
optional FEATURE_GREP_EGREP_ALIAS
testing "grep -E supports extended regexps" "-E fo+" "foo\n" "" "b\ar\nfoo\nbaz"
exit $FAILCOUNT