[pkgsrc/trunk]: pkgsrc/regress regress/infra-unittests: add small framework f...

[rillig <rillig%pkgsrc.org@localhost>]

details:   https://anonhg.NetBSD.org/pkgsrc/rev/0a9e29238afe
branches:  trunk
changeset: 393655:0a9e29238afe
user:      rillig <rillig%pkgsrc.org@localhost>
date:      Thu Mar 21 21:45:30 2019 +0000

description:
regress/infra-unittests: add small framework for testing mk/ with mocks

diffstat:

 regress/Makefile                          |    3 +-
 regress/infra-unittests/mocked-include.sh |   20 ++++
 regress/infra-unittests/spec              |   12 ++
 regress/infra-unittests/test.subr         |  146 ++++++++++++++++++++++++++++++
 regress/infra-unittests/tools-bison.sh    |   59 ++++++++++++
 5 files changed, 239 insertions(+), 1 deletions(-)

diffs (270 lines):

diff -r 0f9f5d56ced1 -r 0a9e29238afe regress/Makefile
--- a/regress/Makefile  Thu Mar 21 21:45:15 2019 +0000
+++ b/regress/Makefile  Thu Mar 21 21:45:30 2019 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.21 2018/11/10 10:40:55 rillig Exp $
+# $NetBSD: Makefile,v 1.22 2019/03/21 21:45:30 rillig Exp $
 #
 # See https://www.netbsd.org/docs/pkgsrc/regression.html for more
 # information about these tests.
@@ -15,6 +15,7 @@
 SUBDIR+=       compiler
 SUBDIR+=       env-vars
 SUBDIR+=       ignore-tools
+SUBDIR+=       infra-unittests
 SUBDIR+=       make-env-phases
 SUBDIR+=       make-quoting
 SUBDIR+=       pkg-options
diff -r 0f9f5d56ced1 -r 0a9e29238afe regress/infra-unittests/mocked-include.sh
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/infra-unittests/mocked-include.sh Thu Mar 21 21:45:30 2019 +0000
@@ -0,0 +1,20 @@
+#! /bin/sh
+set -eu
+
+# Ensures that files that are overridden in the "mocked pkgsrc" directory
+# are picked up before those from the "real pkgsrc" directory.
+
+. "./test.subr"
+
+create_file "including.mk" <<EOF
+.include "mk/bsd.prefs.mk"
+EOF
+
+create_pkgsrc_file "mk/bsd.prefs.mk" <<EOF
+all:
+       @echo 'the mocked definition wins'
+EOF
+
+out=$(test_file "including.mk")
+
+assert_that "$out" --equals "the mocked definition wins"
diff -r 0f9f5d56ced1 -r 0a9e29238afe regress/infra-unittests/spec
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/infra-unittests/spec      Thu Mar 21 21:45:30 2019 +0000
@@ -0,0 +1,12 @@
+# $NetBSD: spec,v 1.1 2019/03/21 21:45:30 rillig Exp $
+#
+# Unit tests for the pkgsrc infrastructure.
+
+do_test() {
+       sh ./mocked-include.sh || TEST_EXITSTATUS=$?
+       sh ./tools-bison.sh || TEST_EXITSTATUS=$?
+}
+
+check_result() {
+       exit_status 0
+}
diff -r 0f9f5d56ced1 -r 0a9e29238afe regress/infra-unittests/test.subr
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/infra-unittests/test.subr Thu Mar 21 21:45:30 2019 +0000
@@ -0,0 +1,146 @@
+#! /bin/sh
+# $NetBSD: test.subr,v 1.1 2019/03/21 21:45:30 rillig Exp $
+set -eu
+
+# This file defines utilities for testing Makefile fragments in a mocked
+# environment. It is used primarily to test the pkgsrc infrastructure.
+#
+# It defines the following shell variables:
+#
+#      cleanup
+#              If yes (the default), clean up the temporary directory
+#              after the test has run successfully.
+#
+# It defines the following shell functions:
+#
+#      mock_cmd
+#              Returns the path to a newly created shell program whose
+#              behavior (output and exit status) is specified by pairs
+#              of --when-args/--then-output or --when-args/--then-exit.
+#              Example:
+#
+#              hello=$(mock_cmd mock-hello \
+#                      --when-args "" --then-output "Hello, world!" \
+#                      --when-args "-t" --then-output "hello, world" \
+#                      --when-args "-?" --then-exit 1
+#              )
+#
+#      create_file $filename <<EOF ... EOF
+#              Creates a file in the temporary directory. The filename
+#              is relative to the temporary directory.
+#
+#      create_pkgsrc_file $filename <<EOF ... EOF
+#              Creates a file in the temporary pkgsrc directory. This
+#              file will be included instead of the one in the real
+#              pkgsrc infrastructure. The filename is relative to the
+#              pkgsrc directory, such as mk/defaults/mk.conf.
+#
+#              This is typically used for creating an empty file for
+#              mk/bsd.prefs.mk or similar files that are included by the
+#              file that is currently under test.
+#
+#      test_file $filename $bmake_args...
+#              Runs bmake with the correct environment so that it picks
+#              up the mocked infrastructure files first and then the ones
+#              from the real pkgsrc installation. The filename is
+#              relative to the temporary directory.
+#
+#      assert_that $actual --equals $expected
+#              Complains loudly if $actual is not equal to $expected.
+
+: ${cleanup:=yes}
+tmpdir="${TMP:-/tmp}/infra-unittests-$$"
+mocked_pkgsrcdir="$tmpdir/pkgsrc"
+rm -rf "$tmpdir"
+mkdir -p "$mocked_pkgsrcdir"
+
+real_pkgsrcdir=""
+for rel in .. ../.. ../../..; do
+       [ -f "$rel/mk/bsd.pkg.mk" ] || continue
+       real_pkgsrcdir="$rel"
+done
+[ "$real_pkgsrcdir" ] || {
+       printf 'error: must be run from somewhere inside the pkgsrc directory\n' 1>&2
+       exit 1
+}
+
+maybe_cleanup() {
+       exit_status=$?
+       if [ $exit_status -ne 0 ]; then
+               printf 'info: the test files are in %s\n' "$tmpdir" 1>&2
+               exit $exit_status
+       fi
+
+       [ "$cleanup" = "yes" ] && rm -rf "$tmpdir"
+}
+trap "maybe_cleanup" EXIT
+
+mock_cmd() {
+       cmdname="$1"
+       shift 1
+
+       {
+       printf '#! /bin/sh\n\n'
+       while [ $# -ge 4 ]; do
+               case $1,$3 in
+               (--when-args,--then-output)
+                       cat <<EOF
+[ "x\$*" = "x$2" ] && { printf '%s\n' "$4" && exit 0; }
+
+EOF
+                       shift 4
+                       ;;
+               (--when-args,--then-exit)
+                       cat <<EOF
+[ "x\$*" = "x$2" ] && exit $4
+
+EOF
+                       shift 4
+                       ;;
+               *)      printf 'error: invalid arguments to mock_cmd: %s\n' "$*" 1>&2
+                       exit 1
+                       ;;
+               esac
+       done
+       cat <<EOF
+printf 'error: %s: no mock behavior defined for arguments %s\n' "\$0" "\$*" 1>&2
+exit 1
+EOF
+       } > "$tmpdir/$cmdname"
+       chmod +x "$tmpdir/$cmdname"
+
+       printf '%s\n' "$tmpdir/$cmdname"
+}
+
+create_file() {
+       cat > "$tmpdir/$1"
+}
+
+create_pkgsrc_file() {
+       mkdir -p "$mocked_pkgsrcdir/$(dirname "$1")"
+       cat > "$mocked_pkgsrcdir/$1"
+}
+
+test_file() {
+       cat <<EOF > "$tmpdir/test.subr.main.mk"
+PKGSRCDIR=     $real_pkgsrcdir
+.PATH:         $mocked_pkgsrcdir
+.PATH:         $real_pkgsrcdir
+.include "$1"
+EOF
+       shift
+
+       bmake -f "$tmpdir/test.subr.main.mk" "$@"
+}
+
+assert_that() {
+       case "$2" in
+       (--equals)
+               [ "x$1" = "x$3" ] && return 0
+               printf 'assertion failed:\nexpected: <%s>\nbut was:  <%s>\n' "$3" "$1" 1>&2
+               exit 1
+       (*)
+               printf 'usage: assert_that <expr> --equals <expr>\n' 1>&2
+               exit 1
+       esac
+}
diff -r 0f9f5d56ced1 -r 0a9e29238afe regress/infra-unittests/tools-bison.sh
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/infra-unittests/tools-bison.sh    Thu Mar 21 21:45:30 2019 +0000
@@ -0,0 +1,59 @@
+#! /bin/sh
+set -eu
+
+# Tests for mk/tools/bison.mk
+
+. "./test.subr"
+
+bison=$(mock_cmd mock-bison \
+       --when-args "--version" --then-output "bison 1.5"
+)
+
+pkg_admin=$(mock_cmd mock-pkg_admin \
+       --when-args "pmatch bison>=1.0 bison-1.5" --then-exit 0 \
+       --when-args "pmatch bison>=1.1 bison-1.5" --then-exit 0 \
+       --when-args "pmatch bison>=2.0 bison-1.5" --then-exit 1
+)
+
+# A package may add more than one entry to the BISON_REQD list. The
+# platform-provided bison may only be used if all of the BISON_REQD
+# entries are below the platform-provided version.
+#
+create_file "multiple-reqd-entries.mk" <<EOF
+BISON_REQD=            1.0 2.0
+USE_TOOLS=             bison
+TOOLS_PLATFORM.bison=  $tmpdir/mock-bison
+ECHO=                  echo
+SED=                   sed
+PKG_ADMIN=             $tmpdir/mock-pkg_admin
+
+all:
+       @echo \${_TOOLS_USE_PKGSRC.bison}
+
+.include "mk/tools/bison.mk"
+EOF
+
+out=$(test_file "multiple-reqd-entries.mk")
+
+assert_that "$out" --equals "yes"
+
+# Both required versions are lower than the version of the mocked bison,
+# which is 1.5. Therefore the platform-provided bison can be used.
+#
+create_file "multiple-reqd-entries.mk" <<EOF
+BISON_REQD=            1.0 1.1
+USE_TOOLS=             bison
+TOOLS_PLATFORM.bison=  $tmpdir/mock-bison
+ECHO=                  echo
+SED=                   sed
+PKG_ADMIN=             $tmpdir/mock-pkg_admin
+
+all:
+       @echo \${_TOOLS_USE_PKGSRC.bison}
+
+.include "mk/tools/bison.mk"
+EOF
+
+out=$(test_file "multiple-reqd-entries.mk")
+
+assert_that "$out" --equals "no"