aboutsummaryrefslogtreecommitdiffstats
path: root/plugins/cover.mk
blob: a85033598c1c13d70a6a56d194a8b4a589d42e16 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
# Copyright (c) 2016, Loïc Hoguin <[email protected]>
# Copyright (c) 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
COVER_DATA_DIR ?= $(COVER_REPORT_DIR)

ifdef COVER
COVER_APPS ?= $(notdir $(ALL_APPS_DIRS))
COVER_DEPS ?=
endif

# Code coverage for Common Test.

ifdef COVER
ifdef CT_RUN
ifneq ($(wildcard $(TEST_DIR)),)
test-build:: $(TEST_DIR)/ct.cover.spec

$(TEST_DIR)/ct.cover.spec: cover-data-dir
	$(gen_verbose) printf "%s\n" \
		"{incl_app, '$(PROJECT)', details}." \
		"{incl_dirs, '$(PROJECT)', [\"$(CURDIR)/ebin\" \
			$(foreach a,$(COVER_APPS),$(comma) \"$(APPS_DIR)/$a/ebin\") \
			$(foreach d,$(COVER_DEPS),$(comma) \"$(DEPS_DIR)/$d/ebin\")]}." \
		'{export,"$(abspath $(COVER_DATA_DIR))/ct.coverdata"}.' > $@

CT_RUN += -cover $(TEST_DIR)/ct.cover.spec
endif
endif
endif

# Code coverage for other tools.

ifdef COVER
define cover.erl
	CoverSetup = fun() ->
		Dirs = ["$(CURDIR)/ebin"
			$(foreach a,$(COVER_APPS),$(comma) "$(APPS_DIR)/$a/ebin")
			$(foreach d,$(COVER_DEPS),$(comma) "$(DEPS_DIR)/$d/ebin")],
		[begin
			case filelib:is_dir(Dir) of
				false -> false;
				true ->
					case cover:compile_beam_directory(Dir) of
						{error, _} -> halt(1);
						_ -> true
					end
			end
		end || Dir <- Dirs]
	end,
	CoverExport = fun(Filename) -> cover:export(Filename) end,
endef
else
define cover.erl
	CoverSetup = fun() -> ok end,
	CoverExport = fun(_) -> ok end,
endef
endif

# Core targets

ifdef COVER
ifneq ($(COVER_REPORT_DIR),)
tests::
	$(verbose) $(MAKE) --no-print-directory cover-report
endif

cover-data-dir: | $(COVER_DATA_DIR)

$(COVER_DATA_DIR):
	$(verbose) mkdir -p $(COVER_DATA_DIR)
else
cover-data-dir:
endif

clean:: coverdata-clean

ifneq ($(COVER_REPORT_DIR),)
distclean:: cover-report-clean
endif

help::
	$(verbose) printf "%s\n" "" \
		"Cover targets:" \
		"  cover-report  Generate a HTML coverage report from previously collected" \
		"                cover data." \
		"  all.coverdata Merge all coverdata files into all.coverdata." \
		"" \
		"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 $(COVER_DATA_DIR)/all.coverdata,$(wildcard $(COVER_DATA_DIR)/*.coverdata))

.PHONY: coverdata-clean
coverdata-clean:
	$(gen_verbose) rm -f $(COVER_DATA_DIR)/*.coverdata $(TEST_DIR)/ct.cover.spec

# Merge all coverdata files into one.
define cover_export.erl
	$(foreach f,$(COVERDATA),cover:import("$(f)") == ok orelse halt(1),)
	cover:export("$(COVER_DATA_DIR)/$@"), halt(0).
endef

all.coverdata: $(COVERDATA) cover-data-dir
	$(gen_verbose) $(call erlang,$(cover_export.erl))

# 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 $(COVER_REPORT_DIR)
ifneq ($(COVER_REPORT_DIR),$(COVER_DATA_DIR))
	$(if $(shell ls -A $(COVER_DATA_DIR)/),,$(verbose) rmdir $(COVER_DATA_DIR))
endif

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 -H -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 = [$(EUNIT_HRL_MODS)],
	Report1 = [{M, {Y, case lists:member(M, EunitHrlMods) of
		true -> N - 1; false -> N end}} || {M, {Y, N}} <- Report],
	TotalY = lists:sum([Y || {_, {Y, _}} <- Report1]),
	TotalN = lists:sum([N || {_, {_, N}} <- Report1]),
	Perc = fun(Y, N) -> case Y + N of 0 -> 100; S -> round(100 * Y / S) end end,
	TotalPerc = Perc(TotalY, TotalN),
	{ok, F} = file:open("$(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, Perc(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:
	$(verbose) mkdir -p $(COVER_REPORT_DIR)
	$(gen_verbose) $(call erlang,$(cover_report.erl))

endif
endif # ifneq ($(COVER_REPORT_DIR),)