test-lib: Infrastructure to test and check for prerequisites
[gitweb.git] / t / test-lib.sh
index 6f6244ab7e1ae8db044224ecb115a1f4cc64f912..3c65cfe1ab3db02a6837c1f6e2d374e6f02e934d 100644 (file)
@@ -3,6 +3,22 @@
 # Copyright (c) 2005 Junio C Hamano
 #
 
+# if --tee was passed, write the output not only to the terminal, but
+# additionally to the file test-results/$BASENAME.out, too.
+case "$GIT_TEST_TEE_STARTED, $* " in
+done,*)
+       # do not redirect again
+       ;;
+*' --tee '*|*' --va'*)
+       mkdir -p test-results
+       BASE=test-results/$(basename "$0" .sh)
+       (GIT_TEST_TEE_STARTED=done ${SHELL-sh} "$0" "$@" 2>&1;
+        echo $? > $BASE.exit) | tee $BASE.out
+       test "$(cat $BASE.exit)" = 0
+       exit
+       ;;
+esac
+
 # Keep the original TERM for say_color
 ORIGINAL_TERM=$TERM
 
@@ -82,7 +98,7 @@ do
        -i|--i|--im|--imm|--imme|--immed|--immedi|--immedia|--immediat|--immediate)
                immediate=t; shift ;;
        -l|--l|--lo|--lon|--long|--long-|--long-t|--long-te|--long-tes|--long-test|--long-tests)
-               export GIT_TEST_LONG=t; shift ;;
+               GIT_TEST_LONG=t; export GIT_TEST_LONG; shift ;;
        -h|--h|--he|--hel|--help)
                help=t; shift ;;
        -v|--v|--ve|--ver|--verb|--verbo|--verbos|--verbose)
@@ -94,6 +110,10 @@ do
        --no-python)
                # noop now...
                shift ;;
+       --va|--val|--valg|--valgr|--valgri|--valgrin|--valgrind)
+               valgrind=t; verbose=t; shift ;;
+       --tee)
+               shift ;; # was handled already
        *)
                break ;;
        esac
@@ -218,18 +238,50 @@ test_merge () {
        git tag "$1"
 }
 
+# This function helps systems where core.filemode=false is set.
+# Use it instead of plain 'chmod +x' to set or unset the executable bit
+# of a file in the working directory and add it to the index.
+
+test_chmod () {
+       chmod "$@" &&
+       git update-index --add "--chmod=$@"
+}
+
+# Use test_set_prereq to tell that a particular prerequisite is available.
+# The prerequisite can later be checked for in two ways:
+#
+# - Explicitly using test_have_prereq.
+#
+# - Implicitly by specifying the prerequisite tag in the calls to
+#   test_expect_{success,failure,code}.
+#
+# The single parameter is the prerequisite tag (a simple word, in all
+# capital letters by convention).
+
+test_set_prereq () {
+       satisfied="$satisfied$1 "
+}
+satisfied=" "
+
+test_have_prereq () {
+       case $satisfied in
+       *" $1 "*)
+               : yes, have it ;;
+       *)
+               ! : nope ;;
+       esac
+}
+
 # You are not expected to call test_ok_ and test_failure_ directly, use
 # the text_expect_* functions instead.
 
 test_ok_ () {
-       test_count=$(expr "$test_count" + 1)
-       test_success=$(expr "$test_success" + 1)
+       test_success=$(($test_success + 1))
        say_color "" "  ok $test_count: $@"
 }
 
 test_failure_ () {
-       test_count=$(expr "$test_count" + 1)
-       test_failure=$(expr "$test_failure" + 1);
+       test_failure=$(($test_failure + 1))
        say_color error "FAIL $test_count: $1"
        shift
        echo "$@" | sed -e 's/^/        /'
@@ -237,13 +289,11 @@ test_failure_ () {
 }
 
 test_known_broken_ok_ () {
-       test_count=$(expr "$test_count" + 1)
        test_fixed=$(($test_fixed+1))
        say_color "" "  FIXED $test_count: $@"
 }
 
 test_known_broken_failure_ () {
-       test_count=$(expr "$test_count" + 1)
        test_broken=$(($test_broken+1))
        say_color skip "  still broken $test_count: $@"
 }
@@ -259,20 +309,23 @@ test_run_ () {
 }
 
 test_skip () {
-       this_test=$(expr "./$0" : '.*/\(t[0-9]*\)-[^/]*$')
-       this_test="$this_test.$(expr "$test_count" + 1)"
+       test_count=$(($test_count+1))
        to_skip=
        for skp in $GIT_SKIP_TESTS
        do
-               case "$this_test" in
+               case $this_test.$test_count in
                $skp)
                        to_skip=t
                esac
        done
+       if test -z "$to_skip" && test -n "$prereq" &&
+          ! test_have_prereq "$prereq"
+       then
+               to_skip=t
+       fi
        case "$to_skip" in
        t)
                say_color skip >&3 "skipping test: $@"
-               test_count=$(expr "$test_count" + 1)
                say_color skip "skip $test_count: $1"
                : true
                ;;
@@ -283,8 +336,9 @@ test_skip () {
 }
 
 test_expect_failure () {
+       test "$#" = 3 && { prereq=$1; shift; } || prereq=
        test "$#" = 2 ||
-       error "bug in the test script: not 2 parameters to test-expect-failure"
+       error "bug in the test script: not 2 or 3 parameters to test-expect-failure"
        if ! test_skip "$@"
        then
                say >&3 "checking known breakage: $2"
@@ -300,8 +354,9 @@ test_expect_failure () {
 }
 
 test_expect_success () {
+       test "$#" = 3 && { prereq=$1; shift; } || prereq=
        test "$#" = 2 ||
-       error "bug in the test script: not 2 parameters to test-expect-success"
+       error "bug in the test script: not 2 or 3 parameters to test-expect-success"
        if ! test_skip "$@"
        then
                say >&3 "expecting success: $2"
@@ -317,8 +372,9 @@ test_expect_success () {
 }
 
 test_expect_code () {
+       test "$#" = 4 && { prereq=$1; shift; } || prereq=
        test "$#" = 3 ||
-       error "bug in the test script: not 3 parameters to test-expect-code"
+       error "bug in the test script: not 3 or 4 parameters to test-expect-code"
        if ! test_skip "$@"
        then
                say >&3 "expecting exit code $1: $3"
@@ -342,15 +398,16 @@ test_expect_code () {
 # Usage: test_external description command arguments...
 # Example: test_external 'Perl API' perl ../path/to/test.pl
 test_external () {
-       test "$#" -eq 3 ||
-       error >&5 "bug in the test script: not 3 parameters to test_external"
+       test "$#" = 4 && { prereq=$1; shift; } || prereq=
+       test "$#" = 3 ||
+       error >&5 "bug in the test script: not 3 or 4 parameters to test_external"
        descr="$1"
        shift
        if ! test_skip "$descr" "$@"
        then
                # Announce the script to reduce confusion about the
                # test output that follows.
-               say_color "" " run $(expr "$test_count" + 1): $descr ($*)"
+               say_color "" " run $test_count: $descr ($*)"
                # Run command; redirect its stderr to &4 as in
                # test_run_, but keep its stdout on our stdout even in
                # non-verbose mode.
@@ -434,7 +491,7 @@ test_create_repo () {
        repo="$1"
        mkdir -p "$repo"
        cd "$repo" || error "Cannot setup test environment"
-       "$GIT_EXEC_PATH/git" init "--template=$GIT_EXEC_PATH/templates/blt/" >&3 2>&4 ||
+       "$GIT_EXEC_PATH/git" init "--template=$owd/../templates/blt/" >&3 2>&4 ||
        error "cannot run git init -- have you built things yet?"
        mv .git/hooks .git/hooks-disabled
        cd "$owd"
@@ -444,7 +501,7 @@ test_done () {
        trap - EXIT
        test_results_dir="$TEST_DIRECTORY/test-results"
        mkdir -p "$test_results_dir"
-       test_results_path="$test_results_dir/${0%-*}-$$"
+       test_results_path="$test_results_dir/${0%.sh}-$$"
 
        echo "total $test_count" >> $test_results_path
        echo "success $test_success" >> $test_results_path
@@ -492,8 +549,73 @@ test_done () {
 # Test the binaries we have just built.  The tests are kept in
 # t/ subdirectory and are run in 'trash directory' subdirectory.
 TEST_DIRECTORY=$(pwd)
-PATH=$TEST_DIRECTORY/..:$PATH
-GIT_EXEC_PATH=$(pwd)/..
+if test -z "$valgrind"
+then
+       PATH=$TEST_DIRECTORY/..:$PATH
+       GIT_EXEC_PATH=$TEST_DIRECTORY/..
+else
+       make_symlink () {
+               test -h "$2" &&
+               test "$1" = "$(readlink "$2")" || {
+                       # be super paranoid
+                       if mkdir "$2".lock
+                       then
+                               rm -f "$2" &&
+                               ln -s "$1" "$2" &&
+                               rm -r "$2".lock
+                       else
+                               while test -d "$2".lock
+                               do
+                                       say "Waiting for lock on $2."
+                                       sleep 1
+                               done
+                       fi
+               }
+       }
+
+       make_valgrind_symlink () {
+               # handle only executables
+               test -x "$1" || return
+
+               base=$(basename "$1")
+               symlink_target=$TEST_DIRECTORY/../$base
+               # do not override scripts
+               if test -x "$symlink_target" &&
+                   test ! -d "$symlink_target" &&
+                   test "#!" != "$(head -c 2 < "$symlink_target")"
+               then
+                       symlink_target=../valgrind.sh
+               fi
+               case "$base" in
+               *.sh|*.perl)
+                       symlink_target=../unprocessed-script
+               esac
+               # create the link, or replace it if it is out of date
+               make_symlink "$symlink_target" "$GIT_VALGRIND/bin/$base" || exit
+       }
+
+       # override all git executables in TEST_DIRECTORY/..
+       GIT_VALGRIND=$TEST_DIRECTORY/valgrind
+       mkdir -p "$GIT_VALGRIND"/bin
+       for file in $TEST_DIRECTORY/../git* $TEST_DIRECTORY/../test-*
+       do
+               make_valgrind_symlink $file
+       done
+       OLDIFS=$IFS
+       IFS=:
+       for path in $PATH
+       do
+               ls "$path"/git-* 2> /dev/null |
+               while read file
+               do
+                       make_valgrind_symlink "$file"
+               done
+       done
+       IFS=$OLDIFS
+       PATH=$GIT_VALGRIND/bin:$PATH
+       GIT_EXEC_PATH=$GIT_VALGRIND/bin
+       export GIT_VALGRIND
+fi
 GIT_TEMPLATE_DIR=$(pwd)/../templates/blt
 unset GIT_CONFIG
 GIT_CONFIG_NOSYSTEM=1
@@ -528,7 +650,8 @@ test_create_repo "$test"
 # in subprocesses like git equals our $PWD (for pathname comparisons).
 cd -P "$test" || exit 1
 
-this_test=$(expr "./$0" : '.*/\(t[0-9]*\)-[^/]*$')
+this_test=${0##*/}
+this_test=${this_test%%-*}
 for skp in $GIT_SKIP_TESTS
 do
        to_skip=
@@ -546,3 +669,23 @@ do
                test_done
        esac
 done
+
+# Fix some commands on Windows
+case $(uname -s) in
+*MINGW*)
+       # Windows has its own (incompatible) sort and find
+       sort () {
+               /usr/bin/sort "$@"
+       }
+       find () {
+               /usr/bin/find "$@"
+       }
+       sum () {
+               md5sum "$@"
+       }
+       # git sees Windows-style pwd
+       pwd () {
+               builtin pwd -W
+       }
+       ;;
+esac