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# Copyright 2015, Viktor Söderqvist <[email protected]>
# This file is part of erlang.mk and subject to the terms of the ISC License.
COVER_REPORT_DIR = cover
# utility variables for representing special symbols
empty :=
space := $(empty) $(empty)
comma := ,
# Hook in coverage to eunit
ifdef COVER
ifdef EUNIT_RUN
EUNIT_RUN_BEFORE += -eval \
'case cover:compile_beam_directory("ebin") of \
{error, _} -> halt(1); \
_ -> ok \
end.'
EUNIT_RUN_AFTER += -eval 'cover:export("eunit.coverdata").'
endif
endif
# Hook in coverage to ct
ifdef COVER
ifdef CT_RUN
# All modules in 'ebin'
COVER_MODS = $(notdir $(basename $(shell echo ebin/*.beam)))
test-build:: $(TEST_DIR)/ct.cover.spec
$(TEST_DIR)/ct.cover.spec:
@echo Cover mods: $(COVER_MODS)
$(gen_verbose) printf "%s\n" \
'{incl_mods,[$(subst $(space),$(comma),$(COVER_MODS))]}.' \
'{export,"$(CURDIR)/ct.coverdata"}.' > $@
CT_RUN += -cover $(TEST_DIR)/ct.cover.spec
endif
endif
# Core targets
ifdef COVER
ifneq ($(COVER_REPORT_DIR),)
tests::
@$(MAKE) make --no-print-directory cover-report
endif
endif
clean:: coverdata-clean
ifneq ($(COVER_REPORT_DIR),)
distclean:: cover-report-clean
endif
help::
@printf "%s\n" "" \
"Cover targets:" \
" cover-report Generate a HTML coverage report from previously collected" \
" cover data." \
" all.coverdata Merge {eunit,ct}.coverdata into one coverdata file." \
"" \
"If COVER=1 is set, coverage data is generated by the targets eunit and ct. The" \
"target tests additionally generates a HTML coverage report from the combined" \
"coverdata files from each of these testing tools. HTML reports can be disabled" \
"by setting COVER_REPORT_DIR to empty."
# Plugin specific targets
COVERDATA = $(filter-out all.coverdata,$(wildcard *.coverdata))
.PHONY: coverdata-clean
coverdata-clean:
$(gen_verbose) rm -f *.coverdata ct.cover.spec
# Merge all coverdata files into one.
all.coverdata: $(COVERDATA)
$(gen_verbose) $(ERL) -eval ' \
$(foreach f,$(COVERDATA),cover:import("$(f)") == ok orelse halt(1),) \
cover:export("$@"), halt(0).'
# These are only defined if COVER_REPORT_DIR is non-empty. Set COVER_REPORT_DIR to
# empty if you want the coverdata files but not the HTML report.
ifneq ($(COVER_REPORT_DIR),)
.PHONY: cover-report-clean cover-report
cover-report-clean:
$(gen_verbose) rm -rf $(COVER_REPORT_DIR)
ifeq ($(COVERDATA),)
cover-report:
else
# Modules which include eunit.hrl always contain one line without coverage
# because eunit defines test/0 which is never called. We compensate for this.
EUNIT_HRL_MODS = $(subst $(space),$(comma),$(shell \
grep -e '^\s*-include.*include/eunit\.hrl"' src/*.erl \
| sed "s/^src\/\(.*\)\.erl:.*/'\1'/" | uniq))
define cover_report.erl
$(foreach f,$(COVERDATA),cover:import("$(f)") == ok orelse halt(1),)
Ms = cover:imported_modules(),
[cover:analyse_to_file(M, "$(COVER_REPORT_DIR)/" ++ atom_to_list(M)
++ ".COVER.html", [html]) || M <- Ms],
Report = [begin {ok, R} = cover:analyse(M, module), R end || M <- Ms],
EunitHrlMods = [$(EUNIT_HRL_MODS)],
Report1 = [{M, {Y, case lists:member(M, EunitHrlMods) of
true -> N - 1; false -> N end}} || {M, {Y, N}} <- Report],
TotalY = lists:sum([Y || {_, {Y, _}} <- Report1]),
TotalN = lists:sum([N || {_, {_, N}} <- Report1]),
TotalPerc = round(100 * TotalY / (TotalY + TotalN)),
{ok, F} = file:open("$(COVER_REPORT_DIR)/index.html", [write]),
io:format(F, "<!DOCTYPE html><html>~n"
"<head><meta charset=\"UTF-8\">~n"
"<title>Coverage report</title></head>~n"
"<body>~n", []),
io:format(F, "<h1>Coverage</h1>~n<p>Total: ~p%</p>~n", [TotalPerc]),
io:format(F, "<table><tr><th>Module</th><th>Coverage</th></tr>~n", []),
[io:format(F, "<tr><td><a href=\"~p.COVER.html\">~p</a></td>"
"<td>~p%</td></tr>~n",
[M, M, round(100 * Y / (Y + N))]) || {M, {Y, N}} <- Report1],
How = "$(subst $(space),$(comma)$(space),$(basename $(COVERDATA)))",
Date = "$(shell date -u "+%Y-%m-%dT%H:%M:%SZ")",
io:format(F, "</table>~n"
"<p>Generated using ~s and erlang.mk on ~s.</p>~n"
"</body></html>", [How, Date]),
halt().
endef
cover-report:
$(gen_verbose) mkdir -p $(COVER_REPORT_DIR)
$(gen_verbose) $(call erlang,$(cover_report.erl))
endif
endif # ifneq ($(COVER_REPORT_DIR),)
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