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# Unit test for the remove-trailing-ws script.
# Prepare the working directory
$ mkdir files.orig files
$ cat > files.orig/add
< Line 1
< Line 2
< Line 3
<
< Line 5
< Line 6
$ cat > files.orig/change
< change
< from
< this
$ cat > files.orig/complex
< Line 1
< Line 2
<
< Line 3
< Line 4
<
< Line 5
< Line 6
<
< Line 7
< Line 8
<
< Line 9
< Line 10
$ cat > files.orig/delete
< delete
< an old
< file
$ cat > files.orig/remove
< Line 1
< Line 2
<
< Line 3
< Line 4
<
< Line 5
< Line 6
$ cat > files.orig/remove-at-end
< Line 1
< Line 2
<
< Line 3
< Line 4
<
< Line 5
< Line 6
<
< Line 7
< Line 8
<
< Line 9
< Line 10
$ cat > files/add
< Line 1
< Line 2
<
< Line 3
< Line 4
<
< Line 5
< Line 6
$ cat > files/change
< change
< to
< that
$ cat > files/complex
< Line 1
< Line 2
< Line 3
< Line 4
<
< Line 5
< Line 6
<
< Line 7
< Line 8
<
< Line 9
< Line A
<
< Line B
< Line C
<
< Line D
< Line E
< Line F
< Line 10
$ cat > files/create
< create
< a new
< file
$ cat > files/remove
< Line 1
< Line 2
< Line 3
<
< Line 5
< Line 6
$ cat > files/remove-at-end
< Line 1
< Line 2
<
< Line 3
< Line 4
<
< Line 5
< Line 6
$ cp -r files files.backup
# Generate the two patches
$ diff -ruN files.orig files > unified.diff
# For the context diff we need the files listed in a certain order to
# cover some corner cases
$ diff -c files.orig/add files/add > context.diff
$ diff -C 10 files.orig/remove-at-end files/remove-at-end >> context.diff
$ diff -cN files.orig/create files/create | sed -e '/^diff /d' >> context.diff
$ diff -cN files.orig/delete files/delete >> context.diff
$ diff -c files.orig/remove files/remove | sed -e '/^diff /d' >> context.diff
$ diff -c files.orig/change files/change | sed -e '/^diff /d' >> context.diff
$ diff -c files.orig/complex files/complex >> context.diff
$ %{QUILT_DIR}/scripts/remove-trailing-ws < unified.diff > unified-wsok.diff
> Removing trailing whitespace from line 5 of files/add
> Removing trailing whitespace from lines 2,3 of files/change
> Removing trailing whitespace from lines 12,16 of files/complex
> Removing trailing whitespace from lines 1,2,3 of files/create
$ wc -l files/add
>~ (\s+)?8 files/add
$ wc -l files/change
>~ (\s+)?3 files/change
$ wc -l files/complex
>~ (\s+)?21 files/complex
$ wc -l files/create
>~ (\s+)?3 files/create
$ wc -l files/remove
>~ (\s+)?6 files/remove
$ wc -l files/remove-at-end
>~ (\s+)?8 files/remove-at-end
$ wc -l unified.diff
>~ (\s+)?85 unified.diff
$ wc -l unified-wsok.diff
>~ (\s+)?85 unified-wsok.diff
$ diff -u unified.diff unified-wsok.diff | grep '^++[^+]'
> ++Line 4
> ++to
> ++that
> ++Line 9
> ++Line C
> ++create
> ++a new
> ++file
$ rm -rf files
$ mv files.backup files
$ %{QUILT_DIR}/scripts/remove-trailing-ws < context.diff > context-wsok.diff
> Removing trailing whitespace from line 5 of files/add
> Removing trailing whitespace from lines 2,3 of files/change
> Removing trailing whitespace from lines 12,16 of files/complex
> Removing trailing whitespace from lines 1,2,3 of files/create
$ wc -l files/add
>~ (\s+)?8 files/add
$ wc -l files/change
>~ (\s+)?3 files/change
$ wc -l files/complex
>~ (\s+)?21 files/complex
$ wc -l files/create
>~ (\s+)?3 files/create
$ wc -l files/remove
>~ (\s+)?6 files/remove
$ wc -l files/remove-at-end
>~ (\s+)?8 files/remove-at-end
$ wc -l context.diff
>~ (\s+)?104 context.diff
$ wc -l context-wsok.diff
>~ (\s+)?104 context-wsok.diff
$ diff -u context.diff context-wsok.diff | grep '^+[+!] '
> ++ Line 4
> ++ create
> ++ a new
> ++ file
> +! to
> +! that
> +! Line 9
> +! Line C
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