#
# Rsubox - Rust single unix utilities in one executable.
# Copyright (C) 2022 Łukasz Szpakowski
#
# 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/>.
#
start_test wc "wc prints number of newlines, number of words and number of bytes for stdin"
    echo abcdef ghijkl | "../$RSUBOX" wc > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 = "$?" ] &&
    assert_file_content 2 '1 2 14' ../test_tmp/stdout.txt &&
    assert_file_size 3 0 ../test_tmp/stderr.txt
end_test

start_test wc "wc prints number of newlines, number of words and number of bytes for more data from stdin"
    cat ../test_fixtures/test.txt | "../$RSUBOX" wc > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 = "$?" ] &&
    assert_file_content 2 '78 499 4623' ../test_tmp/stdout.txt &&
    assert_file_size 3 0 ../test_tmp/stderr.txt
end_test

start_test wc "wc prints number of newlines, number of words and number of bytes for file"
    "../$RSUBOX" wc ../test_fixtures/test.txt > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 = "$?" ] &&
    assert_file_content 2 '78 499 4623 ../test_fixtures/test.txt' ../test_tmp/stdout.txt &&
    assert_file_size 3 0 ../test_tmp/stderr.txt
end_test

start_test wc "wc prints number of newlines, number of words and number of bytes for two files"
    "../$RSUBOX" wc ../test_fixtures/test.txt ../test_fixtures/test_utf8.txt > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 = "$?" ] &&
    assert_file_line_count 2 3 ../test_tmp/stdout.txt &&
    assert_file_line 3 1 '78 499 4623 ../test_fixtures/test.txt' ../test_tmp/stdout.txt &&
    assert_file_line 4 2 '78 496 4620 ../test_fixtures/test_utf8.txt' ../test_tmp/stdout.txt &&
    assert_file_line 5 3 '156 995 9243 total' ../test_tmp/stdout.txt &&
    assert_file_size 6 0 ../test_tmp/stderr.txt
end_test

start_test wc "wc prints number of newlines"
    "../$RSUBOX" wc -l ../test_fixtures/test.txt > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 = "$?" ] &&
    assert_file_content 2 '78 ../test_fixtures/test.txt' ../test_tmp/stdout.txt &&
    assert_file_size 3 0 ../test_tmp/stderr.txt
end_test

start_test wc "wc prints number of words"
    "../$RSUBOX" wc -w ../test_fixtures/test.txt > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 = "$?" ] &&
    assert_file_content 2 '499 ../test_fixtures/test.txt' ../test_tmp/stdout.txt &&
    assert_file_size 3 0 ../test_tmp/stderr.txt
end_test

start_test wc "wc prints number of characters for text without UTF-8 codes"
    "../$RSUBOX" wc -m ../test_fixtures/test.txt > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 = "$?" ] &&
    assert_file_content 2 '4623 ../test_fixtures/test.txt' ../test_tmp/stdout.txt &&
    assert_file_size 3 0 ../test_tmp/stderr.txt
end_test

start_test wc "wc prints number of characters for text with UTF-8 codes"
    "../$RSUBOX" wc -m ../test_fixtures/test_utf8.txt > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 = "$?" ] &&
    assert_file_content 2 '4618 ../test_fixtures/test_utf8.txt' ../test_tmp/stdout.txt &&
    assert_file_size 3 0 ../test_tmp/stderr.txt
end_test

start_test wc "wc prints number of bytes for text"
    "../$RSUBOX" wc -c ../test_fixtures/test.txt > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 = "$?" ] &&
    assert_file_content 2 '4623 ../test_fixtures/test.txt' ../test_tmp/stdout.txt &&
    assert_file_size 3 0 ../test_tmp/stderr.txt
end_test

start_test wc "wc complains on non-existent file"
    "../$RSUBOX" wc xxx  > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 != "$?" ] &&
    assert_file_size 2 0 ../test_tmp/stdout.txt &&
    assert_file_content_pattern 3 '^xxx: ' ../test_tmp/stderr.txt
end_test

start_test wc "wc complains on file that doesn't contain valid UTF-8"
    "../$RSUBOX" wc ../test_fixtures/test_invalid_utf8.txt  > ../test_tmp/stdout.txt 2> ../test_tmp/stderr.txt 

    assert 1 [ 0 != "$?" ] &&
    assert_file_size 2 0 ../test_tmp/stdout.txt &&
    assert_file_content_pattern 3 '^\.\./test_fixtures/test_invalid_utf8.txt: stream' ../test_tmp/stderr.txt
end_test