NAME

Test::File -- test file attributes

SYNOPSIS

  use Test::File;

DESCRIPTION

This modules provides a collection of test utilities for file attributes.

Some file attributes depend on the owner of the process testing the file in the same way the file test operators do. For instance, root (or super-user or Administrator) may always be able to read files no matter the permissions.

Some attributes don't make sense outside of Unix, either, so some tests automatically skip if they think they won't work on the platform. If you have a way to make these functions work on Windows, for instance, please send me a patch. :) IF you want to pretend to be Windows on a non-Windows machine (for instance, to test "skip()"), you can set the "PRETEND_TO_BE_WINDOWS" environment variable.

The optional NAME parameter for every function allows you to specify a name for the test. If not supplied, a reasonable default will be generated.

Functions

file_exists_ok( FILENAME [, NAME ] )

Ok if the file exists, and not ok otherwise.

file_not_exists_ok( FILENAME [, NAME ] )

Ok if the file does not exist, and not okay if it does exist.

file_empty_ok( FILENAME [, NAME ] )

Ok if the file exists and has empty size, not ok if the file does not exist or exists with non-zero size.

file_not_empty_ok( FILENAME [, NAME ] )

Ok if the file exists and has non-zero size, not ok if the file does not exist or exists with zero size.

file_size_ok( FILENAME, SIZE [, NAME ] )

Ok if the file exists and has SIZE size in bytes (exactly), not ok if the file does not exist or exists with size other than SIZE.

file_max_size_ok( FILENAME, MAX [, NAME ] )

Ok if the file exists and has size less than or equal to MAX bytes, not ok if the file does not exist or exists with size greater than MAX bytes.

file_min_size_ok( FILENAME, MIN [, NAME ] )

Ok if the file exists and has size greater than or equal to MIN bytes, not ok if the file does not exist or exists with size less than MIN bytes.

file_line_count_is( FILENAME, COUNT [, NAME ] )

Ok if the file exists and has COUNT lines (exactly), not ok if the file does not exist or exists with a line count other than COUNT.

This function uses the current value of $/ as the line ending and counts the lines by reading them and counting how many it read.

file_line_count_isnt( FILENAME, COUNT [, NAME ] )

Ok if the file exists and doesn't have exactly COUNT lines, not ok if the file does not exist or exists with a line count of COUNT. Read that carefully: the file must exist for this test to pass!

This function uses the current value of $/ as the line ending and counts the lines by reading them and counting how many it read.

file_line_count_between( FILENAME, MIN, MAX, [, NAME ] )

Ok if the file exists and has a line count between MIN and MAX, inclusively.

This function uses the current value of $/ as the line ending and counts the lines by reading them and counting how many it read.

file_contains_like ( FILENAME, PATTERN [, NAME ] )

Ok if the file exists and its contents (as one big string) match PATTERN, not ok if the file does not exist, is not readable, or exists but doesn't match PATTERN.

Since the file contents are read into memory, you should not use this for large files. Besides memory consumption, test diagnostics for failing tests might be difficult to decipher. However, for short files this works very well.

Because the entire contents are treated as one large string, you can make a pattern that tests multiple lines. Don't forget that you may need to use the /s modifier for such patterns:

        # make sure file has one or more paragraphs with CSS class X
        file_contains_like($html_file, qr{<p class="X">.*?</p>}s);

Contrariwise, if you need to match at the beginning or end of a line inside the file, use the /m modifier:

        # make sure file has a setting for foo
        file_contains_like($config_file, qr/^ foo \s* = \s* \w+ $/mx);

If you want to test your file contents against multiple patterns, but don't want to have the file read in repeatedly, you can pass an arrayref of patterns instead of a single pattern, like so:

        # make sure our template has rendered correctly
        file_contains_like($template_out,
                [
                qr/^ $title_line $/mx,
                map { qr/^ $_ $/mx } @chapter_headings,
                qr/^ $footer_line $/mx,
                ]);

Please note that if you do this, and your file does not exist or is not readable, you'll only get one test failure instead of a failure for each pattern. This could cause your test plan to be off, although you may not care at that point because your test failed anyway. If you do care, either skip the test plan altogether by employing Test::More's "done_testing()" function, or use "file_readable_ok" in conjunction with a "SKIP" block.

Contributed by Buddy Burden "<barefoot@cpan.org>".

file_contains_unlike ( FILENAME, PATTERN [, NAME ] )

Ok if the file exists and its contents (as one big string) do not match PATTERN, not ok if the file does not exist, is not readable, or exists but matches PATTERN.

All notes and caveats for "file_contains_like" apply to this function as well.

Contributed by Buddy Burden "<barefoot@cpan.org>".

file_contains_utf8_like ( FILENAME, PATTERN [, NAME ] )

The same as "file_contains_like", except the file is opened as UTF-8.

file_contains_utf8_unlike ( FILENAME, PATTERN [, NAME ] )

The same as "file_contains_unlike", except the file is opened as UTF-8.

file_contains_encoded_like ( FILENAME, ENCODING, PATTERN [, NAME ] )

The same as "file_contains_like", except the file is opened with ENCODING

file_contains_encoded_unlike ( FILENAME, ENCODING, PATTERN [, NAME ] )

The same as "file_contains_unlike", except the file is opened with ENCODING.

file_readable_ok( FILENAME [, NAME ] )

Ok if the file exists and is readable, not ok if the file does not exist or is not readable.

file_not_readable_ok( FILENAME [, NAME ] )

Ok if the file exists and is not readable, not ok if the file does not exist or is readable.

file_writeable_ok( FILENAME [, NAME ] )

Ok if the file exists and is writeable, not ok if the file does not exist or is not writeable.

file_not_writeable_ok( FILENAME [, NAME ] )

Ok if the file exists and is not writeable, not ok if the file does not exist or is writeable.

file_executable_ok( FILENAME [, NAME ] )

Ok if the file exists and is executable, not ok if the file does not exist or is not executable.