Add test for push-to-trunk script.

tools/test-push-to-trunk.sh

Index: tools/test-push-to-trunk.sh
diff --git a/tools/test-push-to-trunk.sh b/tools/test-push-to-trunk.sh
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+#!/bin/bash
+# Copyright 2013 the V8 project authors. All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of Google Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Tests the push-to-trunk.sh script. Needs to be run in V8 base dir:
+# ./tools/test-push-to-trunk.sh
+
+# TODO(machenbach): Check automatically if expectations match.
+# TODO(machenbach): Mock out version number retrieval.
+# TODO(machenbach): Allow multiple different test cases.
+# TODO(machenbach): Allow multi line mock output.
+# TODO(machenbach): Represent test expectations/mock output without an array
+# index increment.
+
+########## Stdin for push-to-trunk.sh
+
+# Confirm push to trunk commit ID
+INPUT[0]="Y"
+# Open editor
+INPUT[1]=""
+# Confirm increment version number
+INPUT[2]="Y"
+# Reviewer for V8 CL
+INPUT[3]="reviewer@chromium.org"
+# Enter LGTM for V8 CL
+INPUT[4]="LGTM"
+# Confirm checkout sanity
+INPUT[5]="Y"
+# Manually type in trunk revision
+INPUT[6]="12345"
+# Reviewer for Chromium CL
+INPUT[7]="reviewer@chromium.org"
+
+########## Expected commands and mock output
+
+EXP[0]="git status -s -uno"
+OUT[0]=""
+EXP[1]="git status -s -b -uno"
+OUT[1]="## some_branch"
+EXP[2]="git svn fetch"
+OUT[2]=""
+EXP[3]="git branch"
+OUT[3]="not the temp branch"
+EXP[4]="git checkout -b prepare-push-temporary-branch-created-by-script"
+OUT[4]=""
+EXP[5]="git branch"
+OUT[5]="not the branch"
+EXP[6]="git branch"
+OUT[6]="not the trunk branch"
+EXP[7]="git checkout -b prepare-push svn/bleeding_edge"
+OUT[7]=""
+EXP[8]="git log -1 --format=%H ChangeLog"
+OUT[8]="hash1"
+EXP[9]="git log -1 hash1"
+OUT[9]=""
+EXP[10]="git log hash1..HEAD --format=%H"
+OUT[10]="hash2"
+EXP[11]="git log -1 hash2 --format=\"%w(80,8,8)%s\""
+OUT[11]="Log line..."
+EXP[12]="git log -1 hash2 --format=\"%B\""
+OUT[12]="BUG=6789"
+EXP[13]="git log -1 hash2 --format=\"%w(80,8,8)(%an)\""
+OUT[13]="   (author@chromium.org)"
+EXP[14]="git commit -a -m \"Prepare push to trunk.  Now working on version 3.4.5.\""
+OUT[14]=""
+EXP[15]="git cl upload -r reviewer@chromium.org --send-mail"
+OUT[15]=""
+EXP[16]="git cl dcommit"
+OUT[16]=""
+EXP[17]="git svn fetch"
+OUT[17]=""
+EXP[18]="git checkout svn/bleeding_edge"
+OUT[18]=""
+EXP[19]="git log -1 --format=%H --grep=Prepare push to trunk.  Now working on version 3.4.5."
+OUT[19]="hash3"
+EXP[20]="git diff svn/trunk"
+OUT[20]="patch1"
+EXP[21]="git checkout -b trunk-push svn/trunk"
+OUT[21]=""
+EXP[22]="git apply --index --reject /tmp/v8-push-to-trunk-tempfile-patch"
+OUT[22]=""
+EXP[23]="git add src/version.cc"
+OUT[23]=""
+EXP[24]="git commit -F /tmp/v8-push-to-trunk-tempfile-commitmsg"
+OUT[24]=""
+EXP[25]="git svn dcommit"
+OUT[25]="r1234"
+EXP[26]="git svn tag 3.4.5 -m \"Tagging version 3.4.5\""
+OUT[26]=""
+EXP[27]="git status -s -uno"
+OUT[27]=""
+EXP[28]="git checkout master"
+OUT[28]=""
+EXP[29]="git pull"
+OUT[29]=""
+EXP[30]="git checkout -b v8-roll-12345"
+OUT[30]=""
+EXP[31]="git commit -am Update V8 to version 3.4.5."
+OUT[31]=""
+EXP[32]="git cl upload --send-mail"
+OUT[32]=""
+EXP[33]="git checkout -f some_branch"
+OUT[33]=""
+EXP[34]="git branch -D prepare-push-temporary-branch-created-by-script"
+OUT[34]=""
+EXP[35]="git branch -D prepare-push"
+OUT[35]=""
+EXP[36]="git branch -D trunk-push"
+OUT[36]=""
+
+########## Global temp files for test input/output
+
+export TEST_OUTPUT=$(mktemp)
+export INDEX=$(mktemp)
+export MOCK_OUTPUT=$(mktemp)
+export EXPECTED_COMMANDS=$(mktemp)
+
+########## Command index
+
+inc_index() {
+  local I="$(command cat $INDEX)"
+  let "I+=1"
+  echo "$I" > $INDEX
+  echo $I
+}
+
+echo "-1" > $INDEX
+export -f inc_index
+
+########## Mock output accessor
+
+get_mock_output() {
+  local I=$1
+  let "I+=1"
+  command sed "${I}q;d" $MOCK_OUTPUT
+}
+
+export -f get_mock_output
+
+for E in "${OUT[@]}"; do
+  echo $E
+done > $MOCK_OUTPUT
+
+########## Expected commands accessor
+
+get_expected_command() {
+  local I=$1
+  let "I+=1"
+  command sed "${I}q;d" $EXPECTED_COMMANDS
+}
+
+export -f get_expected_command
+
+for E in "${EXP[@]}"; do
+  echo $E
+done > $EXPECTED_COMMANDS
+
+########## Mock commands
+
+git() {
+  # All calls to git are mocked out. Expected calls and mock output are stored
+  # in the EXP/OUT arrays above.
+  local I=$(inc_index)
+  local OUT=$(get_mock_output $I)
+  local EXP=$(get_expected_command $I)
+  echo "#############################" >> $TEST_OUTPUT
+  echo "Com. Index:  $I" >> $TEST_OUTPUT
+  echo "Expected:    ${EXP}" >> $TEST_OUTPUT
+  echo "Actual:      git $@" >> $TEST_OUTPUT
+  echo "Mock Output: ${OUT}" >> $TEST_OUTPUT
+  echo "${OUT}"
+}
+
+mv() {
+  echo "#############################" >> $TEST_OUTPUT
+  echo "mv $@" >> $TEST_OUTPUT
+}
+
+sed() {
+  # Only calls to sed * -i * are mocked out.
+  echo "#############################" >> $TEST_OUTPUT
+  local arr=$@
+  if [[ "${arr[@]}" =~ "-i" || "${arr[${#arr[@]}-1]}" == "-i" ]]; then
+    echo "sed $@" >> $TEST_OUTPUT
+  else
+    echo "sed $@" >> $TEST_OUTPUT
+    command sed "$@"
+  fi
+}
+
+editor() {
+  echo "#############################" >> $TEST_OUTPUT
+  echo "editor $@" >> $TEST_OUTPUT
+}
+
+cd() {
+  echo "#############################" >> $TEST_OUTPUT
+  echo "cd $@" >> $TEST_OUTPUT
+}
+
+export -f git
+export -f mv
+export -f sed
+export -f cd
+export -f editor
+export EDITOR=editor
+
+########## Invoke script with test stdin
+
+for i in "${INPUT[@]}"; do 
+    echo $i
+done | tools/push-to-trunk.sh -c "path/to/chromium"
+
+echo "Collected output:"
+command cat $TEST_OUTPUT
+
+########## Clean up
+
+rm -rf $TEST_OUTPUT
+rm -rf $INDEX
+rm -rf $MOCK_OUTPUT
+rm -rf $EXPECTED_COMMANDS