view tests/test-diff-ignore-whitespace @ 4540:133a52d70958

Respect locale environment variables on darwin.
In python 2.4+ on darwin, locale.getpreferredencoding() returns
mac-roman regardless of what LC_CTYPE, LANG etc are set to. This can
produce hard-to-notice conversion errors if input text is not in
mac-roman. So this patch overrides it with setlocale/getlocale if the
environment has been customized, on the assumption that the user has
done so deliberately.

#!/bin/sh

# GNU diff is the reference for all of these results.

hgdiff() {
    hg diff --nodates "$@"
}

test_added_blank_lines() {
    printf '\nhello world\n\ngoodbye world\n\n' >foo

    echo '>>> two diffs showing three added lines <<<'
    hgdiff
    hgdiff -b

    echo '>>> no diffs <<<'
    hgdiff -B
    hgdiff -Bb
}

test_added_horizontal_space_first_on_a_line() {
    printf '\t hello world\ngoodbye world\n' >foo

    echo '>>> four diffs showing added space first on the first line <<<'
    hgdiff
    hgdiff -b
    hgdiff -B
    hgdiff -Bb
}

test_added_horizontal_space_last_on_a_line() {
    printf 'hello world\t \ngoodbye world\n' >foo

    echo '>>> two diffs showing space appended to the first line <<<'
    hgdiff
    hgdiff -B

    echo '>>> no diffs <<<'
    hgdiff -b
    hgdiff -Bb
}

test_added_horizontal_space_in_the_middle_of_a_word() {
    printf 'hello world\ngood bye world\n' >foo

    echo '>>> four diffs showing space inserted into "goodbye" <<<'
    hgdiff
    hgdiff -B
    hgdiff -b
    hgdiff -Bb
}

test_increased_horizontal_whitespace_amount() {
    printf 'hello world\ngoodbye\t\t  \tworld\n' >foo

    echo '>>> two diffs showing changed whitespace amount in the last line <<<'
    hgdiff
    hgdiff -B

    echo '>>> no diffs <<<'
    hgdiff -b
    hgdiff -Bb
}

test_added_blank_line_with_horizontal_whitespace() {
    printf 'hello world\n \t\ngoodbye world\n' >foo

    echo '>>> four diffs showing added blank line w/horizontal space <<<'
    hgdiff
    hgdiff -B
    hgdiff -b
    hgdiff -Bb
}

hg init
printf 'hello world\ngoodbye world\n' >foo
hg ci -Amfoo -ufoo -d '0 0'

test_added_blank_lines
test_added_horizontal_space_first_on_a_line
test_added_horizontal_space_last_on_a_line
test_added_horizontal_space_in_the_middle_of_a_word
test_increased_horizontal_whitespace_amount
test_added_blank_line_with_horizontal_whitespace