From patchwork Sat Aug 15 17:17:32 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiang Xin X-Patchwork-Id: 11715791 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5ED82618 for ; Sat, 15 Aug 2020 22:02:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2C8BA205CB for ; Sat, 15 Aug 2020 22:02:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Rrn5bK0L" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728730AbgHOWC1 (ORCPT ); Sat, 15 Aug 2020 18:02:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728728AbgHOVvY (ORCPT ); Sat, 15 Aug 2020 17:51:24 -0400 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 08797C0068C2 for ; Sat, 15 Aug 2020 10:17:51 -0700 (PDT) Received: by mail-pg1-x542.google.com with SMTP id o5so6015905pgb.2 for ; Sat, 15 Aug 2020 10:17:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=9mv56U4JW/yI/UWrgKXRGpzIC/GlfwoSEOJ/4pVPF7M=; b=Rrn5bK0LqBC+0Cv6VQXhMkxM7QLjBnhlzwln9l/hNl8FKJHly5q6kSaJWfh1Lrkdq8 +UvgDnCT/MSTK1zDZHM7AGaP2padrLXHe5dGdHmK4YA15906anc61eBhFDbRv5v5IlX9 xKuQOVfW8FgQ/H/JB8gvapeGT+HCPofj3YDuz/lvm4GqMs1eirAaUglC6Wov9yBLTxEJ CqR0kHBhv0xjegUdIYvv82XAyFLfUMhHVPnWE9m75sG7cw/RfW+F5SCsGO3zu0GK/R0w 93f0PU96Su9WmrlxYggl7Wv210krc8ZPjBfiDEHAxOk55Z5K8KtU5XhQ0d2r5WoAhYvq Zivg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=9mv56U4JW/yI/UWrgKXRGpzIC/GlfwoSEOJ/4pVPF7M=; b=sNN9I8V/nh8TOf7e1bhy/YN79QipX9FDBde/Qjynl7/i3og/YHjIofR5gJXh+ycLsO vSWNgyZFRp/Rd3aRwLuoJ9df5UJJbqmlwMTr6RB87M3ph+ZXkrlvtHvMMmR5WrhyxgPG 2obXi8/rQRyKIo7e3UzM3wvRUzbxQgHbQT25WTamoayqabR8baTYyvtdcbOEyzox59/S bBz1W+k0OOWzhHWDkWlx2kNO0GnxLkez6oGnCMuclQiJxNAN6deuvnYQBlLA9vmndBr2 pfAUjlfpdNWtgUEe3rvCeh48fBTx9Iyrzg0TvwNcJzm8A7WMnhzqO7s5RYrOVDUdsiFT cy8Q== X-Gm-Message-State: AOAM5309PZW0tt90sd2VxhzJ0oSee0LtGFm42N1PxTeNWeBES4snh1Mk PhH3ZCW9ysZcjAASMURX5OE= X-Google-Smtp-Source: ABdhPJxLJMRVgU/SOxqIKWLnM5UunfkfRLNREUdnWc4HQKu3JDKhspIUd0fzTTOjFx+haUdVHa6jHw== X-Received: by 2002:a63:4d8:: with SMTP id 207mr5090223pge.146.1597511870344; Sat, 15 Aug 2020 10:17:50 -0700 (PDT) Received: from tigtog.localdomain.localdomain ([144.34.163.219]) by smtp.gmail.com with ESMTPSA id x13sm11040596pga.30.2020.08.15.10.17.49 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 15 Aug 2020 10:17:49 -0700 (PDT) From: Jiang Xin To: Junio C Hamano , Git List Cc: Jiang Xin Subject: [PATCH v17 02/10] t5411: add basic test cases for proc-receive hook Date: Sat, 15 Aug 2020 13:17:32 -0400 Message-Id: <20200815171740.6257-3-worldhello.net@gmail.com> X-Mailer: git-send-email 2.26.0.rc0 In-Reply-To: <20200518094039.757-1-worldhello.net@gmail.com> References: <20200518094039.757-1-worldhello.net@gmail.com> MIME-Version: 1.0 Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Jiang Xin Topic "proc-receive-hook" will change the workflow and output of git-push. Add some basic test cases in t5411 before introducing the new topic. Signed-off-by: Jiang Xin --- t/t5411-proc-receive-hook.sh | 108 +++++++++++++ t/t5411/common-functions.sh | 56 +++++++ t/t5411/test-0000-standard-git-push.sh | 143 +++++++++++++++++ .../test-0001-standard-git-push--porcelain.sh | 147 ++++++++++++++++++ t/t5411/test-0002-pre-receive-declined.sh | 33 ++++ ...st-0003-pre-receive-declined--porcelain.sh | 34 ++++ 6 files changed, 521 insertions(+) create mode 100755 t/t5411-proc-receive-hook.sh create mode 100644 t/t5411/common-functions.sh create mode 100644 t/t5411/test-0000-standard-git-push.sh create mode 100644 t/t5411/test-0001-standard-git-push--porcelain.sh create mode 100644 t/t5411/test-0002-pre-receive-declined.sh create mode 100644 t/t5411/test-0003-pre-receive-declined--porcelain.sh diff --git a/t/t5411-proc-receive-hook.sh b/t/t5411-proc-receive-hook.sh new file mode 100755 index 0000000000..3a684353a8 --- /dev/null +++ b/t/t5411-proc-receive-hook.sh @@ -0,0 +1,108 @@ +#!/bin/sh +# +# Copyright (c) 2020 Jiang Xin +# + +test_description='Test proc-receive hook' + +. ./test-lib.sh + +. "$TEST_DIRECTORY"/t5411/common-functions.sh + +setup_upstream_and_workbench () { + # Refs of upstream : master(A) + # Refs of workbench: master(A) tags/v123 + test_expect_success "setup upstream and workbench" ' + rm -rf upstream.git && + rm -rf workbench && + git init --bare upstream.git && + git init workbench && + create_commits_in workbench A B && + ( + cd workbench && + # Try to make a stable fixed width for abbreviated commit ID, + # this fixed-width oid will be replaced with "". + git config core.abbrev 7 && + git tag -m "v123" v123 $A && + git remote add origin ../upstream.git && + git push origin master && + git update-ref refs/heads/master $A $B && + git -C ../upstream.git update-ref \ + refs/heads/master $A $B + ) && + TAG=$(git -C workbench rev-parse v123) && + + # setup pre-receive hook + write_script upstream.git/hooks/pre-receive <<-\EOF && + exec >&2 + echo "# pre-receive hook" + while read old new ref + do + echo "pre-receive< $old $new $ref" + done + EOF + + # setup post-receive hook + write_script upstream.git/hooks/post-receive <<-\EOF && + exec >&2 + echo "# post-receive hook" + while read old new ref + do + echo "post-receive< $old $new $ref" + done + EOF + + upstream=upstream.git + ' +} + +run_proc_receive_hook_test() { + case $1 in + http) + PROTOCOL="HTTP protocol" + URL_PREFIX="http://.*" + ;; + local) + PROTOCOL="builtin protocol" + URL_PREFIX="\.\." + ;; + esac + + # Include test cases for both file and HTTP protocol + for t in "$TEST_DIRECTORY"/t5411/test-*.sh + do + . "$t" + done +} + +# Initialize the upstream repository and local workbench. +setup_upstream_and_workbench + +# Run test cases for 'proc-receive' hook on local file protocol. +run_proc_receive_hook_test local + +ROOT_PATH="$PWD" +. "$TEST_DIRECTORY"/lib-gpg.sh +. "$TEST_DIRECTORY"/lib-httpd.sh +. "$TEST_DIRECTORY"/lib-terminal.sh +start_httpd + +# Re-initialize the upstream repository and local workbench. +setup_upstream_and_workbench + +# Refs of upstream : master(A) +# Refs of workbench: master(A) tags/v123 +test_expect_success "setup for HTTP protocol" ' + git -C upstream.git config http.receivepack true && + upstream="$HTTPD_DOCUMENT_ROOT_PATH/upstream.git" && + mv upstream.git "$upstream" && + git -C workbench remote set-url origin "$HTTPD_URL/auth-push/smart/upstream.git" && + set_askpass user@host pass@host +' + +setup_askpass_helper + +# Run test cases for 'proc-receive' hook on HTTP protocol. +run_proc_receive_hook_test http + +test_done diff --git a/t/t5411/common-functions.sh b/t/t5411/common-functions.sh new file mode 100644 index 0000000000..6580bebd8e --- /dev/null +++ b/t/t5411/common-functions.sh @@ -0,0 +1,56 @@ +# Create commits in and assign each commit's oid to shell variables +# given in the arguments (A, B, and C). E.g.: +# +# create_commits_in A B C +# +# NOTE: Never calling this function from a subshell since variable +# assignments will disappear when subshell exits. +create_commits_in () { + repo="$1" && + if ! parent=$(git -C "$repo" rev-parse HEAD^{} --) + then + parent= + fi && + T=$(git -C "$repo" write-tree) && + shift && + while test $# -gt 0 + do + name=$1 && + test_tick && + if test -z "$parent" + then + oid=$(echo $name | git -C "$repo" commit-tree $T) + else + oid=$(echo $name | git -C "$repo" commit-tree -p $parent $T) + fi && + eval $name=$oid && + parent=$oid && + shift || + return 1 + done && + git -C "$repo" update-ref refs/heads/master $oid +} + +# Format the output of git-push, git-show-ref and other commands to make a +# user-friendly and stable text. We can easily prepare the expect text +# without having to worry about future changes of the commit ID and spaces +# of the output. Single quotes are replaced with double quotes, because +# it is boring to prepare unquoted single quotes in expect text. We also +# remove some locale error messages, which break test if we turn on +# `GIT_TEST_GETTEXT_POISON=true` in order to test unintentional translations +# on plumbing commands. +make_user_friendly_and_stable_output () { + sed \ + -e "s/ *\$//" \ + -e "s/ */ /g" \ + -e "s/'/\"/g" \ + -e "s/ / /g" \ + -e "s/$A//g" \ + -e "s/$B//g" \ + -e "s/$TAG//g" \ + -e "s/$ZERO_OID//g" \ + -e "s/$(echo $A | cut -c1-7)[0-9a-f]*//g" \ + -e "s/$(echo $B | cut -c1-7)[0-9a-f]*//g" \ + -e "s#To $URL_PREFIX/upstream.git#To #" \ + -e "/^error: / d" +} diff --git a/t/t5411/test-0000-standard-git-push.sh b/t/t5411/test-0000-standard-git-push.sh new file mode 100644 index 0000000000..e206587348 --- /dev/null +++ b/t/t5411/test-0000-standard-git-push.sh @@ -0,0 +1,143 @@ +# Refs of upstream : master(A) +# Refs of workbench: master(A) tags/v123 +# git-push : master(B) next(A) +test_expect_success "git-push ($PROTOCOL)" ' + git -C workbench push origin \ + $B:refs/heads/master \ + HEAD:refs/heads/next \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + remote: # pre-receive hook + remote: pre-receive< refs/heads/master + remote: pre-receive< refs/heads/next + remote: # post-receive hook + remote: post-receive< refs/heads/master + remote: post-receive< refs/heads/next + To + .. -> master + * [new branch] HEAD -> next + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/master + refs/heads/next + EOF + test_cmp expect actual +' + +# Refs of upstream : master(B) next(A) +# Refs of workbench: master(A) tags/v123 +# git-push --atomic: master(A) next(B) +test_expect_success "git-push --atomic ($PROTOCOL)" ' + test_must_fail git -C workbench push --atomic origin \ + master \ + $B:refs/heads/next \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + To + ! [rejected] master -> master (non-fast-forward) + ! [rejected] -> next (atomic push failed) + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/master + refs/heads/next + EOF + test_cmp expect actual +' + +# Refs of upstream : master(B) next(A) +# Refs of workbench: master(A) tags/v123 +# git-push : master(A) next(B) +test_expect_success "non-fast-forward git-push ($PROTOCOL)" ' + test_must_fail git \ + -C workbench \ + -c advice.pushUpdateRejected=false \ + push origin \ + master \ + $B:refs/heads/next \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + remote: # pre-receive hook + remote: pre-receive< refs/heads/next + remote: # post-receive hook + remote: post-receive< refs/heads/next + To + .. -> next + ! [rejected] master -> master (non-fast-forward) + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/master + refs/heads/next + EOF + test_cmp expect actual +' + +# Refs of upstream : master(B) next(B) +# Refs of workbench: master(A) tags/v123 +# git-push -f : master(A) NULL tags/v123 refs/review/master/topic(A) a/b/c(A) +test_expect_success "git-push -f ($PROTOCOL)" ' + git -C workbench push -f origin \ + refs/tags/v123 \ + :refs/heads/next \ + master \ + master:refs/review/master/topic \ + HEAD:refs/heads/a/b/c \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + remote: # pre-receive hook + remote: pre-receive< refs/heads/master + remote: pre-receive< refs/heads/next + remote: pre-receive< refs/tags/v123 + remote: pre-receive< refs/review/master/topic + remote: pre-receive< refs/heads/a/b/c + remote: # post-receive hook + remote: post-receive< refs/heads/master + remote: post-receive< refs/heads/next + remote: post-receive< refs/tags/v123 + remote: post-receive< refs/review/master/topic + remote: post-receive< refs/heads/a/b/c + To + + ... master -> master (forced update) + - [deleted] next + * [new tag] v123 -> v123 + * [new reference] master -> refs/review/master/topic + * [new branch] HEAD -> a/b/c + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/a/b/c + refs/heads/master + refs/review/master/topic + refs/tags/v123 + EOF + test_cmp expect actual +' + +# Refs of upstream : master(A) tags/v123 refs/review/master/topic(A) a/b/c(A) +# Refs of workbench: master(A) tags/v123 +test_expect_success "cleanup ($PROTOCOL)" ' + ( + cd "$upstream" && + git update-ref -d refs/review/master/topic && + git update-ref -d refs/tags/v123 && + git update-ref -d refs/heads/a/b/c + ) +' diff --git a/t/t5411/test-0001-standard-git-push--porcelain.sh b/t/t5411/test-0001-standard-git-push--porcelain.sh new file mode 100644 index 0000000000..48f6fcc846 --- /dev/null +++ b/t/t5411/test-0001-standard-git-push--porcelain.sh @@ -0,0 +1,147 @@ +# Refs of upstream : master(A) +# Refs of workbench: master(A) tags/v123 +# git-push : master(B) next(A) +test_expect_success "git-push ($PROTOCOL/porcelain)" ' + git -C workbench push --porcelain origin \ + $B:refs/heads/master \ + HEAD:refs/heads/next \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + remote: # pre-receive hook + remote: pre-receive< refs/heads/master + remote: pre-receive< refs/heads/next + remote: # post-receive hook + remote: post-receive< refs/heads/master + remote: post-receive< refs/heads/next + To + :refs/heads/master .. + * HEAD:refs/heads/next [new branch] + Done + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/master + refs/heads/next + EOF + test_cmp expect actual +' + +# Refs of upstream : master(B) next(A) +# Refs of workbench: master(A) tags/v123 +# git-push --atomic: master(A) next(B) +test_expect_success "git-push --atomic ($PROTOCOL/porcelain)" ' + test_must_fail git -C workbench push --atomic --porcelain origin \ + master \ + $B:refs/heads/next \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + To + ! refs/heads/master:refs/heads/master [rejected] (non-fast-forward) + ! :refs/heads/next [rejected] (atomic push failed) + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/master + refs/heads/next + EOF + test_cmp expect actual +' + +# Refs of upstream : master(B) next(A) +# Refs of workbench: master(A) tags/v123 +# git-push : master(A) next(B) +test_expect_success "non-fast-forward git-push ($PROTOCOL/porcelain)" ' + test_must_fail git \ + -C workbench \ + -c advice.pushUpdateRejected=false \ + push --porcelain origin \ + master \ + $B:refs/heads/next \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + remote: # pre-receive hook + remote: pre-receive< refs/heads/next + remote: # post-receive hook + remote: post-receive< refs/heads/next + To + :refs/heads/next .. + ! refs/heads/master:refs/heads/master [rejected] (non-fast-forward) + Done + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/master + refs/heads/next + EOF + test_cmp expect actual +' + +# Refs of upstream : master(B) next(B) +# Refs of workbench: master(A) tags/v123 +# git-push -f : master(A) NULL tags/v123 refs/review/master/topic(A) a/b/c(A) +test_expect_success "git-push -f ($PROTOCOL/porcelain)" ' + git -C workbench push --porcelain -f origin \ + refs/tags/v123 \ + :refs/heads/next \ + master \ + master:refs/review/master/topic \ + HEAD:refs/heads/a/b/c \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + remote: # pre-receive hook + remote: pre-receive< refs/heads/master + remote: pre-receive< refs/heads/next + remote: pre-receive< refs/tags/v123 + remote: pre-receive< refs/review/master/topic + remote: pre-receive< refs/heads/a/b/c + remote: # post-receive hook + remote: post-receive< refs/heads/master + remote: post-receive< refs/heads/next + remote: post-receive< refs/tags/v123 + remote: post-receive< refs/review/master/topic + remote: post-receive< refs/heads/a/b/c + To + + refs/heads/master:refs/heads/master ... (forced update) + - :refs/heads/next [deleted] + * refs/tags/v123:refs/tags/v123 [new tag] + * refs/heads/master:refs/review/master/topic [new reference] + * HEAD:refs/heads/a/b/c [new branch] + Done + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/a/b/c + refs/heads/master + refs/review/master/topic + refs/tags/v123 + EOF + test_cmp expect actual +' + +# Refs of upstream : master(A) tags/v123 refs/review/master/topic(A) a/b/c(A) +# Refs of workbench: master(A) tags/v123 +test_expect_success "cleanup ($PROTOCOL/porcelain)" ' + ( + cd "$upstream" && + git update-ref -d refs/review/master/topic && + git update-ref -d refs/tags/v123 && + git update-ref -d refs/heads/a/b/c + ) +' diff --git a/t/t5411/test-0002-pre-receive-declined.sh b/t/t5411/test-0002-pre-receive-declined.sh new file mode 100644 index 0000000000..c246f7e68e --- /dev/null +++ b/t/t5411/test-0002-pre-receive-declined.sh @@ -0,0 +1,33 @@ +test_expect_success "setup pre-receive hook ($PROTOCOL)" ' + mv "$upstream/hooks/pre-receive" "$upstream/hooks/pre-receive.ok" && + write_script "$upstream/hooks/pre-receive" <<-EOF + exit 1 + EOF +' + +# Refs of upstream : master(A) +# Refs of workbench: master(A) tags/v123 +# git-push : master(B) next(A) +test_expect_success "git-push is declined ($PROTOCOL)" ' + test_must_fail git -C workbench push origin \ + $B:refs/heads/master \ + HEAD:refs/heads/next \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + To + ! [remote rejected] -> master (pre-receive hook declined) + ! [remote rejected] HEAD -> next (pre-receive hook declined) + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/master + EOF + test_cmp expect actual +' + +test_expect_success "cleanup ($PROTOCOL)" ' + mv "$upstream/hooks/pre-receive.ok" "$upstream/hooks/pre-receive" +' diff --git a/t/t5411/test-0003-pre-receive-declined--porcelain.sh b/t/t5411/test-0003-pre-receive-declined--porcelain.sh new file mode 100644 index 0000000000..b14894de81 --- /dev/null +++ b/t/t5411/test-0003-pre-receive-declined--porcelain.sh @@ -0,0 +1,34 @@ +test_expect_success "setup pre-receive hook ($PROTOCOL/porcelain)" ' + mv "$upstream/hooks/pre-receive" "$upstream/hooks/pre-receive.ok" && + write_script "$upstream/hooks/pre-receive" <<-EOF + exit 1 + EOF +' + +# Refs of upstream : master(A) +# Refs of workbench: master(A) tags/v123 +# git-push : master(B) next(A) +test_expect_success "git-push is declined ($PROTOCOL/porcelain)" ' + test_must_fail git -C workbench push --porcelain origin \ + $B:refs/heads/master \ + HEAD:refs/heads/next \ + >out 2>&1 && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + To + ! :refs/heads/master [remote rejected] (pre-receive hook declined) + ! HEAD:refs/heads/next [remote rejected] (pre-receive hook declined) + Done + EOF + test_cmp expect actual && + git -C "$upstream" show-ref >out && + make_user_friendly_and_stable_output actual && + cat >expect <<-EOF && + refs/heads/master + EOF + test_cmp expect actual +' + +test_expect_success "cleanup ($PROTOCOL/porcelain)" ' + mv "$upstream/hooks/pre-receive.ok" "$upstream/hooks/pre-receive" +'