test -L command returns different error code when called from prompt than from inside the script

I have one folder and one link to the folder:

lrwxr-xr-x    1 xxx staff    9 Dec 12 08:59 _myOrg -> ../_myOrg
drwxr-xr-x   33 xxx staff 1.1K Apr 12 16:47 xxx

when I run test -L _myOrg and then echo $? and then test -L xxx and then echo $? I get – as expected – 0 and 1 respectively.

However, when I run it from the script below:

#!/bin/zsh

pushd $tyc > /dev/null

for d in */ ; do
    if test -L d 
    then
        echo 0
    else
        echo 1
    fi
done

popd > /dev/null

I'm getting:

1
1

and not expected

0
1

Could someone point me in the right direction?

Solution

Suppose you have:

% tree
.
├── xxx
├── yyy -> /tmp/tgt
└── zzz

And:

% ls -l
total 0
drwxr-xr-x  2 dawg  staff  64 Apr 25 16:38 xxx
lrwxr-xr-x  1 dawg  staff   8 Apr 25 16:45 yyy -> /tmp/tgt
drwxr-xr-x  2 dawg  staff  64 Apr 25 17:24 zzz

You are using the following glob:

for d in */ ; do
    [[ -L "$d" ]] && echo "$d is a link" || echo "$d is not a link"
done

Which results in:

xxx/ is not a link
yyy/ is not a link
zzz/ is not a link

Notice the trailing /. Now change the glob:

for d in * ; do
    [[ -L "$d" ]] && echo "$d is a link" || echo "$d is not a link"
done

And it works:

xxx is not a link
yyy is a link
zzz is not a link

Or use your glob and remove the final / in the test:

for d in */ ; do
    [[ -L "${d: : -1}" ]] && echo "$d is a link" || echo "$d is not a link"
done

Or, test to see if there is a trailing / and remove it if so. This now works with both styles of globs:

for d in */ ; do
    td="${d%/}"
    [[ -L "$td" ]] && echo "$d is a link" || echo "$d is not a link"
done

Either of those prints:

xxx/ is not a link
yyy/ is a link
zzz/ is not a link

Note:

You also need the sigil -- the $ part -- to reference the value in the looped variable. The way you have written it, test is attempting to test a literal d and silently failing if the file is not found.
You should generally use "double quotes" around variables in the shell unless you have a good reason not to do so (like around a glob) or the result is subject to further processing by the shell resulting in something different than you are expecting.
A path with the trailing / refers to that paths CONTENTS - not the path itself. This is why yyy/ is not a link but yyy is a link. See filepath misconceptions.