AT_BANNER([checkpatch])

OVS_START_SHELL_HELPERS
# try_checkpatch PATCH [ERRORS]
#
# Runs checkpatch under Python 2 and Python 3, if installed, on the given
# PATCH, expecting the specified set of ERRORS (and warnings).
try_checkpatch() {
    AT_SKIP_IF([test $HAVE_PYTHON2 = no && test $HAVE_PYTHON3 = no])
    # Take the patch to test from $1.  Remove an initial four-space indent
    # from it and, if it is just headers with no body, add a null body.
    echo "$1" | sed 's/^    //' > test.patch
    if grep '---' expout >/dev/null 2>&1; then :
    else
        printf '\n---\n' >> test.patch
    fi

    # Take expected output from $2.
    if test -n "$2"; then
        echo "$2" | sed 's/^    //' > expout
    else
        : > expout
    fi

    try_checkpatch__ "$HAVE_PYTHON2" "$PYTHON2"
    try_checkpatch__ "$HAVE_PYTHON3" "$PYTHON3"
}
try_checkpatch__() {
    if test $1 = no; then
        :
    elif test -s expout; then
        AT_CHECK([$2 $top_srcdir/utilities/checkpatch.py -q test.patch],
                 [1], [stdout])
        AT_CHECK([sed '/^Lines checked:/,$d' stdout], [0], [expout])
    else
        AT_CHECK([$2 $top_srcdir/utilities/checkpatch.py -q test.patch])
    fi
}
OVS_END_SHELL_HELPERS

AT_SETUP([checkpatch - sign-offs])

# Sign-off for single author who is also the committer.
try_checkpatch \
   "Author: A
    Commit: A

    Signed-off-by: A"
try_checkpatch \
   "Author: A
    Commit: A" \
   "ERROR: Author A needs to sign off."

# Single author but somehow the mailing list is the author.
try_checkpatch \
   "Author: Foo Bar via dev <ovs-dev@openvswitch.org>
    Commit: A

    Signed-off-by: A" \
   "ERROR: Author should not be mailing list."

# Sign-off for single author and different committer.
try_checkpatch \
   "Author: A
    Commit: B

    Signed-off-by: A
    Signed-off-by: B"
try_checkpatch \
   "Author: A
    Commit: B" \
   "ERROR: Author A needs to sign off.
    ERROR: Committer B needs to sign off."

# Sign-off for multiple authors with one author also the committer.
try_checkpatch \
   "Author: A
    Commit: A

    Signed-off-by: A
    Co-authored-by: B
    Signed-off-by: B"
try_checkpatch \
   "Author: A
    Commit: A

    Co-authored-by: B
    Signed-off-by: B" \
   "ERROR: Author A needs to sign off."
try_checkpatch \
   "Author: A
    Commit: A

    Signed-off-by: A
    Co-authored-by: B" \
   "ERROR: Co-author B needs to sign off."
try_checkpatch \
   "Author: A
    Commit: A

    Co-authored-by: B" \
   "ERROR: Author A needs to sign off.
    ERROR: Co-author B needs to sign off."

# Sign-off for multiple authors and separate committer.
try_checkpatch \
   "Author: A
    Commit: C

    Signed-off-by: A
    Co-authored-by: B
    Signed-off-by: B
    Signed-off-by: C"
try_checkpatch \
   "Author: A
    Commit: C

    Signed-off-by: A
    Co-authored-by: B
    Signed-off-by: B" \
   "ERROR: Committer C needs to sign off."

# Extra sign-offs:
#
#    - If we know the committer, one extra sign-off raises a warning.
#
#    - If we do not know the committer, two extra sign-offs raise a warning.
try_checkpatch \
   "Author: A
    Commit: C

    Signed-off-by: A
    Co-authored-by: B
    Signed-off-by: B
    Signed-off-by: C
    Signed-off-by: D" \
   "WARNING: Unexpected sign-offs from developers who are not authors or co-authors or committers: D"
try_checkpatch \
   "Author: A

    Signed-off-by: A
    Co-authored-by: B
    Signed-off-by: B
    Signed-off-by: C"
try_checkpatch \
   "Author: A

    Signed-off-by: A
    Co-authored-by: B
    Signed-off-by: B
    Signed-off-by: C
    Signed-off-by: D" \
   "WARNING: Unexpected sign-offs from developers who are not authors or co-authors or committers: C, D"

# Missing committer is OK, missing author is an error.
try_checkpatch \
   "Author: A

    Signed-off-by: A"
try_checkpatch \
   "Commit: A

    Signed-off-by: A" \
   "ERROR: Patch lacks author."

AT_CLEANUP


m4_define([COMMON_PATCH_HEADER], [dnl
    Author: A

    Signed-off-by: A
    ---
    diff --git a/A.c b/A.c
    index 0000000..1111111 100644
    --- a/A.c
    +++ b/A.c
    @@ -1,1 +1,1 @@])


AT_SETUP([checkpatch - parenthesized constructs])
for ctr in 'if' 'while' 'switch'; do
try_checkpatch \
   "COMMON_PATCH_HEADER
    +     $ctr (first_run) {
    "

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     $ctr ( first_run) {
    " \
    "ERROR: Improper whitespace around control block
    #8 FILE: A.c:1:
         $ctr ( first_run) {
"

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     $ctr (first_run ) {
    " \
    "ERROR: Inappropriate bracing around statement
    #8 FILE: A.c:1:
         $ctr (first_run ) {
"

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     $ctr (first_run)
    " \
    "ERROR: Inappropriate bracing around statement
    #8 FILE: A.c:1:
         $ctr (first_run)
"

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     $ctr(first_run)
    " \
    "ERROR: Improper whitespace around control block
    #8 FILE: A.c:1:
         $ctr(first_run)
"

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     $ctr (first_run) { /* foo */
    "

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     $ctr (first_run) { \\
    "
done
AT_CLEANUP


AT_SETUP([checkpatch - parenthesized constructs - for])
try_checkpatch \
   "COMMON_PATCH_HEADER
    +     for (init; condition; increment) {
    "

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     for ( init; condition; increment) {
    " \
    "ERROR: Improper whitespace around control block
    #8 FILE: A.c:1:
         for ( init; condition; increment) {
"

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     for (init; condition; increment ) {
    " \
    "ERROR: Inappropriate bracing around statement
    #8 FILE: A.c:1:
         for (init; condition; increment ) {
"

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     for (init; condition; increment)
    " \
    "ERROR: Inappropriate bracing around statement
    #8 FILE: A.c:1:
         for (init; condition; increment)
"

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     for(init; condition; increment)
    " \
    "ERROR: Improper whitespace around control block
    #8 FILE: A.c:1:
         for(init; condition; increment)
"

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     for (init; condition; increment) { /* foo */
    "

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     for (init; condition; increment) { \\
    "

AT_CLEANUP


AT_SETUP([checkpatch - comments])
try_checkpatch \
   "COMMON_PATCH_HEADER
    +     a = 1; /* C style comment. */
    "

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     /* http://URL/inside/the/comment.html */
    "

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     a = 1; // C99 style comment.
    " \
    "ERROR: C99 style comment
    #8 FILE: A.c:1:
         a = 1; // C99 style comment.
"

AT_CLEANUP

AT_SETUP([checkpatch - whitespace around operator])
try_checkpatch \
   "COMMON_PATCH_HEADER
    +     if (--mcs->n_refs == 0) {
    "

try_checkpatch \
   "COMMON_PATCH_HEADER
    +     if (--mcs->n_refs==0) {
    " \
    "WARNING: Line lacks whitespace around operator
    WARNING: Line lacks whitespace around operator
    #8 FILE: A.c:1:
         if (--mcs->n_refs==0) {
"

AT_CLEANUP