for.earth

VERSION --for-in 0.5

FROM alpine:3.13

WORKDIR /test

all:
    BUILD +test-for-ls
    BUILD +test-for-empty
    BUILD +test-for-single
    BUILD +test-for-comma
    BUILD +test-for-comma-colon
    BUILD +test-for-constant
    BUILD +test-for-expand-arg
    BUILD +test-for-ls-locally

test-for-ls:
    RUN touch a b c d
    RUN ls
    RUN ls | tr '\n' ' '
    RUN test "$(ls | tr '\n' ' ')" = "a b c d "
    FOR variable IN $(ls)
        RUN echo "variable=$variable"
        RUN echo "$variable" >>./output.txt
    END
    RUN cat ./output.txt
    RUN cat ./output.txt | tr '\n' ' '
    RUN test "$(cat ./output.txt | tr '\n' ' ')" = "a b c d "

test-for-empty:
    FOR variable IN ""
        RUN echo "fail! variable='$variable'"; false
    END
    FOR variable IN ''
        RUN echo "fail! variable='$variable'"; false
    END
    ARG empty=""
    FOR variable IN $empty
        RUN echo "fail! variable='$variable'"; false
    END
    ARG empty2
    FOR variable IN $empty2
        RUN echo "fail! variable='$variable'"; false
    END
    FOR variable IN $(cat /dev/null)
        RUN echo "fail! variable='$variable'"; false
    END
    FOR variable IN "$(cat /dev/null)"
        RUN echo "fail! variable='$variable'"; false
    END

test-for-single:
    FOR variable IN one
        RUN test ! -f ./single
        RUN touch ./single
        RUN test "$variable" = "one"
    END

test-for-comma:
    RUN echo "foo,bar:buz:zub,oof" >./input.txt
    FOR --sep="," what IN $(cat ./input.txt)
        RUN echo "what=$what"
        RUN echo "$what" >>./output.txt
    END
    RUN cat ./output.txt
    RUN cat ./output.txt | tr '\n' ' '
    RUN test "$(cat ./output.txt | tr '\n' ' ')" = "foo bar:buz:zub oof "

test-for-comma-colon:
    RUN echo "foo,bar:buz:zub,oof" >./input.txt
    FOR --sep=",:" what IN $(cat ./input.txt)
        RUN echo "what=$what"
        RUN echo "$what" >>./output.txt
    END
    RUN cat ./output.txt
    RUN cat ./output.txt | tr '\n' ' '
    RUN test "$(cat ./output.txt | tr '\n' ' ')" = "foo bar buz zub oof "

test-for-constant:
    FOR what IN "foo bar buz"
        RUN echo "what=$what"
        RUN echo "$what" >>./output.txt
    END
    RUN cat ./output.txt
    RUN cat ./output.txt | tr '\n' ' '
    RUN test "$(cat ./output.txt | tr '\n' ' ')" = "foo bar buz "

test-for-expand-arg:
    ARG data="foo bar buz"
    FOR what IN "$data"
        RUN echo "what=$what"
        RUN echo "$what" >>./output.txt
    END
    RUN cat ./output.txt
    RUN cat ./output.txt | tr '\n' ' '
    RUN test "$(cat ./output.txt | tr '\n' ' ')" = "foo bar buz "

test-for-ls-locally:
    LOCALLY
    WORKDIR test-locally
    RUN touch a b c d
    RUN ls
    RUN ls | tr '\n' ' '
    RUN test "$(ls | tr '\n' ' ')" = "a b c d "
    FOR variable IN $(ls)
        RUN echo "variable=$variable"
        RUN echo "$variable" >>./output.txt
    END
    RUN cat ./output.txt
    RUN cat ./output.txt | tr '\n' ' '
    RUN test "$(cat ./output.txt | tr '\n' ' ')" = "a b c d "