Introduce trivial new pager.c helper infrastructure

diff --git a/t/test-lib.sh b/t/test-lib.sh
index f97f8eb395299f17873f6e6587db235e583cb45e..05f6e79560ff7e3d92c47221b3ee7adec098e676 100755 (executable)
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -5,8 +5,10 @@
 
 # For repeatability, reset the environment to known value.
 LANG=C
+LC_ALL=C
+PAGER=cat
 TZ=UTC
-export LANG TZ
+export LANG LC_ALL PAGER TZ
 unset AUTHOR_DATE
 unset AUTHOR_EMAIL
 unset AUTHOR_NAME
@@ -14,10 +16,11 @@ unset COMMIT_AUTHOR_EMAIL
 unset COMMIT_AUTHOR_NAME
 unset GIT_ALTERNATE_OBJECT_DIRECTORIES
 unset GIT_AUTHOR_DATE
-unset GIT_AUTHOR_EMAIL
-unset GIT_AUTHOR_NAME
-unset GIT_COMMITTER_EMAIL
-unset GIT_COMMITTER_NAME
+GIT_AUTHOR_EMAIL=author@example.com
+GIT_AUTHOR_NAME='A U Thor'
+unset GIT_COMMITTER_DATE
+GIT_COMMITTER_EMAIL=committer@example.com
+GIT_COMMITTER_NAME='C O Mitter'
 unset GIT_DIFF_OPTS
 unset GIT_DIR
 unset GIT_EXTERNAL_DIFF
@@ -25,6 +28,8 @@ unset GIT_INDEX_FILE
 unset GIT_OBJECT_DIRECTORY
 unset SHA1_FILE_DIRECTORIES
 unset SHA1_FILE_DIRECTORY
+export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
+export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
 
 # Each test should start with something like this, after copyright notices:
 #
@@ -35,6 +40,7 @@ unset SHA1_FILE_DIRECTORY
 
 error () {
        echo "* error: $*"
+       trap - exit
        exit 1
 }
 
@@ -57,11 +63,14 @@ do
                exit 0 ;;
        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
                verbose=t; shift ;;
+       --no-python)
+               no_python=t; shift ;;
        *)
                break ;;
        esac
 done
 
+exec 5>&1
 if test "$verbose" = "t"
 then
        exec 4>&2 3>&1
@@ -72,6 +81,8 @@ fi
 test_failure=0
 test_count=0
 
+trap 'echo >&5 "FATAL: Unexpected exit with code $?"; exit 1' exit
+
 
 # You are not expected to call test_ok_ and test_failure_ directly, use
 # the text_expect_* functions instead.
@@ -87,31 +98,39 @@ test_failure_ () {
        say "FAIL $test_count: $1"
        shift
        echo "$@" | sed -e 's/^/        /'
-       test "$immediate" == "" || exit 1
+       test "$immediate" = "" || { trap - exit; exit 1; }
 }
 
 
 test_debug () {
-       test "$debug" == "" || eval "$1"
+       test "$debug" = "" || eval "$1"
+}
+
+test_run_ () {
+       eval >&3 2>&4 "$1"
+       eval_ret="$?"
+       return 0
 }
 
 test_expect_failure () {
-       test "$#" == 2 ||
+       test "$#" = 2 ||
        error "bug in the test script: not 2 parameters to test-expect-failure"
        say >&3 "expecting failure: $2"
-       if eval >&3 2>&4 "$2"
+       test_run_ "$2"
+       if [ "$?" = 0 -a "$eval_ret" != 0 ]
        then
-               test_failure_ "$@"
-       else
                test_ok_ "$1"
+       else
+               test_failure_ "$@"
        fi
 }
 
 test_expect_success () {
-       test "$#" == 2 ||
+       test "$#" = 2 ||
        error "bug in the test script: not 2 parameters to test-expect-success"
        say >&3 "expecting success: $2"
-       if eval >&3 2>&4 "$2"
+       test_run_ "$2"
+       if [ "$?" = 0 -a "$eval_ret" = 0 ]
        then
                test_ok_ "$1"
        else
@@ -119,9 +138,38 @@ test_expect_success () {
        fi
 }
 
+test_expect_code () {
+       test "$#" = 3 ||
+       error "bug in the test script: not 3 parameters to test-expect-code"
+       say >&3 "expecting exit code $1: $3"
+       test_run_ "$3"
+       if [ "$?" = 0 -a "$eval_ret" = "$1" ]
+       then
+               test_ok_ "$2"
+       else
+               test_failure_ "$@"
+       fi
+}
+
+# Most tests can use the created repository, but some amy need to create more.
+# Usage: test_create_repo <directory>
+test_create_repo () {
+       test "$#" = 1 ||
+       error "bug in the test script: not 1 parameter to test-create-repo"
+       owd=`pwd`
+       repo="$1"
+       mkdir "$repo"
+       cd "$repo" || error "Cannot setup test environment"
+       "$GIT_EXEC_PATH/git" init-db --template=$GIT_EXEC_PATH/templates/blt/ 2>/dev/null ||
+       error "cannot run git init-db -- have you built things yet?"
+       mv .git/hooks .git/hooks-disabled
+       cd "$owd"
+}
+       
 test_done () {
+       trap - exit
        case "$test_failure" in
-       0)      
+       0)
                # We could:
                # cd .. && rm -fr trash
                # but that means we forbid any tests that use their own
@@ -143,10 +191,27 @@ test_done () {
 # Test the binaries we have just built.  The tests are kept in
 # t/ subdirectory and are run in trash subdirectory.
 PATH=$(pwd)/..:$PATH
+GIT_EXEC_PATH=$(pwd)/..
+export PATH GIT_EXEC_PATH
+
+# Similarly use ../compat/subprocess.py if our python does not
+# have subprocess.py on its own.
+PYTHON=`sed -e '1{
+       s/^#!//
+       q
+}' ../git-merge-recursive` || {
+       error "You haven't built things yet, have you?"
+}
+"$PYTHON" -c 'import subprocess' 2>/dev/null || {
+       PYTHONPATH=$(pwd)/../compat
+       export PYTHONPATH
+}
+test -d ../templates/blt || {
+       error "You haven't built things yet, have you?"
+}
 
 # Test repository
 test=trash
 rm -fr "$test"
-mkdir "$test"
+test_create_repo $test
 cd "$test"
-git-init-db 2>/dev/null || error "cannot run git-init-db"