### @configure_input@

# Copyright (C) 2010-2021 Free Software Foundation, Inc.

# This file is part of GNU Emacs.

# GNU Emacs is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.

# GNU Emacs is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

### Commentary:

## Some targets:
## check: re-run all tests, writing to .log files.
## check-maybe: run all tests which are outdated with their .log file
## or the source files they are testing.
## filename.log: run tests from filename.el(c) if .log file needs updating
## filename: re-run tests from filename.el(c), with no logging

### Code:

SHELL = @SHELL@

srcdir = @srcdir@
abs_top_srcdir=@abs_top_srcdir@
top_builddir = @top_builddir@
VPATH = $(srcdir)

FIND_DELETE = @FIND_DELETE@
MKDIR_P = @MKDIR_P@
CC = @CC@
CFLAGS = @CFLAGS@
PROFILING_CFLAGS = @PROFILING_CFLAGS@
WARN_CFLAGS = @WARN_CFLAGS@
WERROR_CFLAGS = @WERROR_CFLAGS@
CPPFLAGS = @CPPFLAGS@
SO = @MODULES_SUFFIX@

SEPCHAR = @SEPCHAR@

HAVE_NATIVE_COMP = @HAVE_NATIVE_COMP@

-include ${top_builddir}/src/verbose.mk

# Load any GNU ELPA dependencies that are present, for optional tests.
GNU_ELPA_DIRECTORY ?= $(srcdir)/../../elpa
# Keep elpa_dependencies dependency-ordered.
elpa_dependencies = \
	url-http-ntlm/url-http-ntlm.el \
	web-server/web-server.el
elpa_els = $(addprefix $(GNU_ELPA_DIRECTORY)/packages/,$(elpa_dependencies))
elpa_opts = $(foreach el,$(elpa_els),$(and $(wildcard $(el)),-L $(dir $(el)) -l $(el)))

# We never change directory before running Emacs, so a relative file
# name is fine, and makes life easier.  If we need to change
# directory, we can use emacs --chdir.
EMACS = ../src/emacs

EMACS_EXTRAOPT=

# Command line flags for Emacs.
# Apparently MSYS bash would convert "-L :" to "-L ;" anyway,
# but we might as well be explicit.
EMACSOPT = --no-init-file --no-site-file --no-site-lisp -L "$(SEPCHAR)$(srcdir)" $(elpa_opts) $(EMACS_EXTRAOPT)

# Prevent any settings in the user environment causing problems.
unexport EMACSDATA EMACSDOC EMACSPATH GREP_OPTIONS

## To run tests under a debugger, set this to eg: "gdb --args".
GDB =

# Set this to 'yes' to run the tests in an interactive instance.
TEST_INTERACTIVE ?= no

ifeq ($(TEST_INTERACTIVE),yes)
TEST_RUN_ERT = --eval '(ert (quote ${SELECTOR_ACTUAL}))'
else
TEST_RUN_ERT = --batch --eval '(ert-run-tests-batch-and-exit (quote ${SELECTOR_ACTUAL}))' ${WRITE_LOG}
endif

# Whether to run tests from .el files in preference to .elc, we do
# this by default since it gives nicer stacktraces.
# If you just want a pass/fail, setting this to no is much faster.
export TEST_LOAD_EL ?= \
    $(if $(findstring $(MAKECMDGOALS), all check check-maybe),no,yes)

# Additional settings for ert.
ert_opts += $(elpa_opts)

# Maximum length of lines in ert backtraces; nil for no limit.
# (if empty, use the default ert-batch-backtrace-right-margin).
TEST_BACKTRACE_LINE_LENGTH =

ifneq (${TEST_BACKTRACE_LINE_LENGTH},)
ert_opts += --eval '(setq ert-batch-backtrace-right-margin ${TEST_BACKTRACE_LINE_LENGTH})'
endif

ifeq (@HAVE_MODULES@, yes)
MODULES_EMACSOPT := --module-assertions
else
MODULES_EMACSOPT :=
endif

# The actual Emacs command run in the targets below.
# Prevent any setting of EMACSLOADPATH in user environment causing problems,
# and prevent locals to influence the text of the errors we expect to receive.
emacs = LANG=C EMACSLOADPATH= 		   \
 EMACS_TEST_DIRECTORY=$(abspath $(srcdir)) \
 $(GDB) "$(EMACS)" $(MODULES_EMACSOPT) $(EMACSOPT)

# Set HOME to a nonexistent directory to prevent tests from accessing
# it accidentally (e.g., popping up a gnupg dialog if ~/.authinfo.gpg
# exists, or writing to ~/.bzr.log when running bzr commands).
# NOTE if the '/nonexistent' name is changed `normal-top-level' in
# startup.el must be updated too.
TEST_HOME = /nonexistent

test_module_dir := src/emacs-module-resources

.PHONY: all check

all: check

ifeq ($(HAVE_NATIVE_COMP),yes)
SELECTOR_DEFAULT = (not (or (tag :expensive-test) (tag :unstable)))
SELECTOR_EXPENSIVE = (not (tag :unstable))
SELECTOR_ALL = t
else
SELECTOR_DEFAULT = (not (or (tag :expensive-test) (tag :unstable) (tag :nativecomp)))
SELECTOR_EXPENSIVE = (not (or (tag :unstable) (tag :nativecomp)))
SELECTOR_ALL = (not (tag :nativecomp))
endif
ifdef SELECTOR
SELECTOR_ACTUAL=$(SELECTOR)
else ifndef MAKECMDGOALS
SELECTOR_ACTUAL=$(SELECTOR_DEFAULT)
else ifeq ($(MAKECMDGOALS),all)
SELECTOR_ACTUAL=$(SELECTOR_DEFAULT)
else ifeq ($(MAKECMDGOALS),check)
SELECTOR_ACTUAL=$(SELECTOR_DEFAULT)
else ifeq ($(MAKECMDGOALS),check-maybe)
SELECTOR_ACTUAL=$(SELECTOR_DEFAULT)
else
SELECTOR_ACTUAL=$(SELECTOR_EXPENSIVE)
endif

## Byte-compile all test files to test for errors.
%.elc: %.el
	$(AM_V_ELC)$(emacs) --batch -f batch-byte-compile $<

## Save logs, and show logs for failed tests.
WRITE_LOG = > $@ 2>&1 || { STAT=$$?; cat $@; exit $$STAT; }
## On Hydra or Emba, always show logs for certain problematic tests.
ifdef EMACS_HYDRA_CI
lisp/net/tramp-tests.log \
: WRITE_LOG = 2>&1 | tee $@
endif
ifdef EMACS_EMBA_CI
lisp/filenotify-tests.log lisp/net/tramp-tests.log \
: WRITE_LOG = 2>&1 | tee $@
endif

ifeq ($(TEST_LOAD_EL), yes)
testloadfile = $*.el
else
testloadfile = $*
endif

%.log: %.elc
	$(AM_V_at)${MKDIR_P} $(dir $@)
	$(AM_V_GEN)HOME=$(TEST_HOME) $(emacs) \
	  -l ert ${ert_opts} -l $(testloadfile) \
	  $(TEST_RUN_ERT)

ifeq (@HAVE_MODULES@, yes)
maybe_exclude_module_tests :=
else
maybe_exclude_module_tests := -name emacs-module-tests.el -prune -o
endif

## Optional list of .el files to exclude from testing.
## Intended for use in automated testing where one or more files
## has some problem and needs to be excluded.
## To avoid writing full name, can use eg %foo-tests.el.
EXCLUDE_TESTS =

## To speed up parallel builds, put these slow test files (which can
## take longer than all the rest combined) at the start of the list.
SLOW_TESTS = ${srcdir}/lisp/net/tramp-tests.el

ELFILES := $(sort $(shell find ${srcdir} -name manual -prune -o \
		-name data -prune -o \
		-name "*resources" -prune -o \
		${maybe_exclude_module_tests} \
		-name "*.el" ! -name ".*" -print))

$(foreach slow,${SLOW_TESTS},$(eval ELFILES:= ${slow} $(filter-out ${slow},${ELFILES})))

$(foreach exclude,${EXCLUDE_TESTS},$(eval ELFILES:= $(filter-out ${exclude},${ELFILES})))

## .log files may be in a different directory for out of source builds
LOGFILES := $(patsubst %.el,%.log, \
		$(patsubst $(srcdir)/%,%,$(ELFILES)))
TESTS := $(LOGFILES:.log=)

## If we have to interrupt a hanging test, preserve the log so we can
## see what the problem was.
.PRECIOUS: %.log

## Stop make deleting these as intermediate files.
.SECONDARY: ${ELFILES:.el=.elc} $(test_module_dir)/*.o

.PHONY: ${TESTS}

define test_template
  ## A test FOO-tests depends on the source file with the similar
  ## name, unless FOO itself contains the string '-tests/'.
  ## The similar name is FOO.c if FOO begins with '{lib-,}src/', FOO.el
  ## otherwise.  Although this heuristic does not identify all the
  ## dependencies, it is better than nothing.
  ifeq (,$(patsubst %-tests,,$(1))$(findstring -tests/,$(1)))
    $(1).log: $(patsubst %-tests,$(srcdir)/../%,$(1))$(if \
					$(patsubst src/%,,$(patsubst lib-src/%,,$(1))),.el,.c)
    $(notdir $(1).log): $(1).log
  endif

  ## Short aliases that always re-run the tests, with no logging.
  ## Define both with and without the directory name for ease of use.
  .PHONY: $(1) $(notdir $(1))
  $(1):
	@test ! -f $(1).log || mv $(1).log $(1).log~
	@$(MAKE) $(1).log WRITE_LOG=
  $(notdir $(1)): $(1)
endef

$(foreach test,${TESTS},$(eval $(call test_template,${test})))

## Get the tests for only a specific directory.
SUBDIRS = $(sort $(shell find lib-src lisp misc src -type d ! -path "*resources*" -print))

define subdir_template
  .PHONY: check-$(subst /,-,$(1))
  check-$(subst /,-,$(1)):
	@${MAKE} check LOGFILES="$(patsubst %.el,%.log, \
		$(patsubst $(srcdir)/%,%,$(wildcard $(1)/*.el)))"
endef

$(foreach subdir, $(SUBDIRS), $(eval $(call subdir_template,$(subdir))))

ifeq (@HAVE_MODULES@, yes)
# -fPIC is a no-op on Windows, but causes a compiler warning
ifeq ($(SO),.dll)
FPIC_CFLAGS =
else
FPIC_CFLAGS = -fPIC
endif

GMP_H = @GMP_H@
LIBGMP = @LIBGMP@

MODULE_CFLAGS = -I../src -I$(srcdir)/../src -I../lib -I$(srcdir)/../lib \
  $(FPIC_CFLAGS) $(PROFILING_CFLAGS) \
  $(WARN_CFLAGS) $(WERROR_CFLAGS) $(CFLAGS)

test_module = $(test_module_dir)/mod-test${SO}
src/emacs-module-tests.log src/emacs-module-tests.elc: $(test_module)

# In the compilation command, we can't use any object or archive file
# as source because those are not compiled with -fPIC.  Therefore we
# use only source files.
$(test_module): $(test_module:${SO}=.c) ../src/emacs-module.h
	$(AM_V_at)${MKDIR_P} $(dir $@)
	$(AM_V_CCLD)$(CC) -shared $(CPPFLAGS) $(MODULE_CFLAGS) $(LDFLAGS) \
	  -o $@ $< $(LIBGMP) \
	  $(and $(GMP_H),$(srcdir)/../lib/mini-gmp-gnulib.c) \
	  $(if $(OMIT_GNULIB_MODULE_free-posix),,$(srcdir)/../lib/free.c) \
	  $(srcdir)/../lib/timespec.c $(srcdir)/../lib/gettime.c
endif

src/emacs-tests.log: ../lib-src/seccomp-filter.c

## Check that there is no 'automated' subdirectory, which would
## indicate an incomplete merge from an older version of Emacs where
## the tests were arranged differently.
.PHONY: check-no-automated-subdir
check-no-automated-subdir:
	${AM_V_at}test ! -d $(srcdir)/automated

## Rerun all default tests.
check: mostlyclean check-no-automated-subdir
	@${MAKE} check-doit SELECTOR="${SELECTOR_ACTUAL}"

## Rerun all default and expensive tests.
.PHONY: check-expensive
check-expensive: mostlyclean check-no-automated-subdir
	@${MAKE} check-doit SELECTOR="${SELECTOR_EXPENSIVE}"

## Run all tests, regardless of tag.
.PHONY: check-all
check-all: mostlyclean check-no-automated-subdir
	@${MAKE} check-doit SELECTOR="${SELECTOR_ALL}"

## Re-run all tests which are outdated. A test is outdated if its
## logfile is out-of-date with either the test file, or the source
## files that the tests depend on.  See test_template.
.PHONY: check-maybe
check-maybe: check-no-automated-subdir
	@${MAKE} check-doit SELECTOR="${SELECTOR_ACTUAL}"

## Run the tests.
.PHONY: check-doit
## We can't put LOGFILES as prerequisites, because that would stop the
## summarizing step from running when there is an error.
check-doit:
ifeq ($(TEST_INTERACTIVE), yes)
	HOME=$(TEST_HOME) $(emacs) \
	  -l ert ${ert_opts} \
	  $(patsubst %,-l %,$(if $(findstring $(TEST_LOAD_EL),yes),$ELFILES,$(ELFILES:.el=))) \
	  $(TEST_RUN_ERT)
else
	-@${MAKE} -k ${LOGFILES}
	@$(emacs) --batch -l ert --eval \
	"(ert-summarize-tests-batch-and-exit ${SUMMARIZE_TESTS})" ${LOGFILES}
endif

.PHONY: mostlyclean clean bootstrap-clean distclean maintainer-clean

mostlyclean:
	-@for f in ${LOGFILES}; do test ! -f $$f || mv $$f $$f~; done
	rm -f ./*.tmp

clean:
	find . '(' -name '*.log' -o -name '*.log~' ')' $(FIND_DELETE)
	rm -f $(test_module_dir)/*.o $(test_module_dir)/*.so \
	  $(test_module_dir)/*.dll

bootstrap-clean: clean
	find $(srcdir) -name '*.elc' $(FIND_DELETE)

distclean: clean
	rm -f Makefile

maintainer-clean: distclean bootstrap-clean

.PHONY: check-declare

check-declare:
	$(emacs) -l check-declare \
	  --eval '(check-declare-directory "$(srcdir)")'