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# use GNU Make to run tests in parallel, and without depending on Rubygems
all:: test
ruby = ruby
ragel = ragel
RLFLAGS = -G2
-include local.mk
ruby_bin := $(shell which $(ruby))
ifeq ($(DLEXT),) # "so" for Linux
  DLEXT := $(shell $(ruby) -rrbconfig -e 'puts Config::CONFIG["DLEXT"]')
endif
ifeq ($(RUBY_VERSION),)
  RUBY_VERSION := $(shell $(ruby) -e 'puts RUBY_VERSION')
endif

# dunno how to implement this as concisely in Ruby, and hell, I love awk
awk_slow := awk '/def test_/{print FILENAME"--"$$2".n"}' 2>/dev/null

rails_vers := $(subst test/rails/app-,,$(wildcard test/rails/app-*))
slow_tests := test/unit/test_server.rb test/exec/test_exec.rb \
  test/unit/test_signals.rb test/unit/test_upload.rb
log_suffix = .$(RUBY_VERSION).log
T_r := $(wildcard test/rails/test*.rb)
T := $(filter-out $(slow_tests) $(T_r), $(wildcard test/*/test*.rb))
T_n := $(shell $(awk_slow) $(slow_tests))
T_log := $(subst .rb,$(log_suffix),$(T))
T_n_log := $(subst .n,$(log_suffix),$(T_n))
T_r_log := $(subst .r,$(log_suffix),$(T_r))
test_prefix = $(CURDIR)/test/install-$(RUBY_VERSION)

ext := ext/unicorn_http
c_files := $(ext)/unicorn_http.c $(wildcard $(ext)/*.h)
rl_files := $(addprefix $(ext)/,unicorn_http.rl unicorn_http_common.rl)
rb_files := $(shell grep '^\(bin\|lib\)' Manifest)
inst_deps := $(c_files) $(rb_files)

ragel: $(ext)/unicorn_http.c
$(ext)/unicorn_http.c: $(rl_files)
cd $(@D) && $(ragel) unicorn_http.rl -C $(RLFLAGS) -o $(@F)
$(ruby) -i -p -e '$$_.gsub!(%r{[ \t]*$$},"")' $@
$(ext)/Makefile: $(ext)/extconf.rb $(c_files)
cd $(@D) && $(ruby) extconf.rb
$(ext)/unicorn_http.$(DLEXT): $(ext)/Makefile
$(MAKE) -C $(@D)
lib/unicorn_http.$(DLEXT): $(ext)/unicorn_http.$(DLEXT)
@mkdir -p lib
install -m644 $< $@
http: lib/unicorn_http.$(DLEXT)

$(test_prefix)/.stamp: $(inst_deps)
mkdir -p $(test_prefix)/.ccache
tar c `cat Manifest` | (cd $(test_prefix) && tar x)
$(MAKE) -C $(test_prefix) clean
$(MAKE) -C $(test_prefix) http shebang
> $@

bins := $(wildcard bin/*)

# this is only intended to be run within $(test_prefix)
shebang: $(bins)
$(ruby) -i -p -e '$$_.gsub!(%r{^#!.*$$},"#!$(ruby_bin)")' $^

t_log := $(T_log) $(T_n_log)
test: $(T) $(T_n)
@cat $(t_log) | $(ruby) test/aggregate.rb
@$(RM) $(t_log)

test-exec: $(wildcard test/exec/test_*.rb)
test-unit: $(wildcard test/unit/test_*.rb)
$(slow_tests): $(test_prefix)/.stamp
@$(MAKE) $(shell $(awk_slow) $@)

TEST_OPTS = -v
check_test = grep '0 failures, 0 errors' $(t) >/dev/null
ifndef V
       quiet_pre = @echo '* $(arg)$(extra)';
       quiet_post = >$(t) 2>&1 && $(check_test)
else
# we can't rely on -o pipefail outside of bash 3+,
# so we use a stamp file to indicate success and
# have rm fail if the stamp didn't get created
       stamp = $@$(log_suffix).ok
       quiet_pre = @echo $(ruby) $(arg) $(TEST_OPTS); ! test -f $(stamp) && (
       quiet_post = && > $(stamp) )2>&1 | tee $(t); \
         rm $(stamp) 2>/dev/null && $(check_test)
endif

# TRACER='strace -f -o $(t).strace -s 100000'
run_test = $(quiet_pre) \
  setsid $(TRACER) $(ruby) -w $(arg) $(TEST_OPTS) $(quiet_post) || \
  (sed "s,^,$(extra): ," >&2 < $(t); exit 1)

%.n: arg = $(subst .n,,$(subst --, -n ,$@))
%.n: t = $(subst .n,$(log_suffix),$@)
%.n: export PATH := $(test_prefix)/bin:$(PATH)
%.n: export RUBYLIB := $(test_prefix):$(test_prefix)/lib:$(RUBYLIB)
%.n: $(test_prefix)/.stamp
$(run_test)

$(T): arg = $@
$(T): t = $(subst .rb,$(log_suffix),$@)
$(T): export PATH := $(test_prefix)/bin:$(PATH)
$(T): export RUBYLIB := $(test_prefix):$(test_prefix)/lib:$(RUBYLIB)
$(T): $(test_prefix)/.stamp
$(run_test)

install: $(bins) $(ext)/unicorn_http.c
$(prep_setup_rb)
$(RM) -r .install-tmp
mkdir .install-tmp
cp -p bin/* .install-tmp
$(ruby) setup.rb all
$(RM) $^
mv .install-tmp/* bin/
$(RM) -r .install-tmp
$(prep_setup_rb)

setup_rb_files := .config InstalledFiles
prep_setup_rb := @-$(RM) $(setup_rb_files);$(MAKE) -C $(ext) clean

clean:
-$(MAKE) -C $(ext) clean
$(RM) $(ext)/Makefile lib/unicorn_http.$(DLEXT)
$(RM) $(setup_rb_files) $(t_log)
$(RM) -r $(test_prefix)

Manifest:
(git ls-files && echo $(ext)/unicorn_http.c) | LC_ALL=C sort > $@+
cmp $@+ $@ || mv $@+ $@
$(RM) -f $@+

# using rdoc 2.4.1+
doc: .document $(ext)/unicorn_http.c
rdoc -Na -t "$(shell sed -ne '1s/^= //p' README)"
install -m644 COPYING doc/COPYING
cd doc && ln README.html tmp.html && mv tmp.html index.html

rails_git_url = git://github.com/rails/rails.git
rails_git := vendor/rails.git
$(rails_git)/info/cloned-stamp:
git clone --mirror -q $(rails_git_url) $(rails_git)
> $@

rails_tests := $(addsuffix .r,$(addprefix $(T_r).,$(rails_vers)))
test-rails: $(rails_tests)
$(T_r).%.r: t = $(addsuffix $(log_suffix),$@)
$(T_r).%.r: rv = $(subst .r,,$(subst $(T_r).,,$@))
$(T_r).%.r: extra = ' 'v$(rv)
$(T_r).%.r: arg = $(T_r)
$(T_r).%.r: export PATH := $(test_prefix)/bin:$(PATH)
$(T_r).%.r: export RUBYLIB := $(test_prefix):$(test_prefix)/lib:$(RUBYLIB)
$(T_r).%.r: export UNICORN_RAILS_TEST_VERSION = $(rv)
$(T_r).%.r: export RAILS_GIT_REPO = $(CURDIR)/$(rails_git)
$(T_r).%.r: $(test_prefix)/.stamp $(rails_git)/info/cloned-stamp
$(run_test)

.PHONY: doc $(T) $(slow_tests) Manifest
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