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ruby--ruby/test/coverage/test_coverage.rb
ktsj 9738f96fcf Introduce pattern matching [EXPERIMENTAL]
[ruby-core:87945] [Feature #14912]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67586 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2019-04-17 06:48:03 +00:00

731 lines
18 KiB
Ruby

# frozen_string_literal: false
require "test/unit"
require "coverage"
require "tmpdir"
require "envutil"
class TestCoverage < Test::Unit::TestCase
def test_result_without_start
assert_in_out_err(%w[-rcoverage], <<-"end;", [], /coverage measurement is not enabled/)
Coverage.result
p :NG
end;
end
def test_peek_result_without_start
assert_in_out_err(%w[-rcoverage], <<-"end;", [], /coverage measurement is not enabled/)
Coverage.peek_result
p :NG
end;
end
def test_result_with_nothing
assert_in_out_err(%w[-rcoverage], <<-"end;", ["{}"], [])
Coverage.start
p Coverage.result
end;
end
def test_coverage_running?
assert_in_out_err(%w[-rcoverage], <<-"end;", ["false", "true", "true", "false"], [])
p Coverage.running?
Coverage.start
p Coverage.running?
Coverage.peek_result
p Coverage.running?
Coverage.result
p Coverage.running?
end;
end
def test_coverage_snapshot
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts <<-EOS
def coverage_test_snapshot
:ok
end
EOS
end
assert_in_out_err(%w[-rcoverage], <<-"end;", ["[1, 0, nil]", "[1, 1, nil]", "[1, 1, nil]"], [])
Coverage.start
tmp = Dir.pwd
require tmp + "/test.rb"
cov = Coverage.peek_result[tmp + "/test.rb"]
coverage_test_snapshot
cov2 = Coverage.peek_result[tmp + "/test.rb"]
p cov
p cov2
p Coverage.result[tmp + "/test.rb"]
end;
}
}
end
def test_restarting_coverage
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
tmp = Dir.pwd
File.open("test.rb", "w") do |f|
f.puts <<-EOS
def coverage_test_restarting
:ok
end
EOS
end
File.open("test2.rb", "w") do |f|
f.puts <<-EOS
itself
EOS
end
exp1 = { "#{tmp}/test.rb" => [1, 0, nil] }.inspect
exp2 = {}.inspect
exp3 = { "#{tmp}/test2.rb" => [1] }.inspect
assert_in_out_err(%w[-rcoverage], <<-"end;", [exp1, exp2, exp3], [])
Coverage.start
tmp = Dir.pwd
require tmp + "/test.rb"
p Coverage.result
# Restart coverage but '/test.rb' is required before restart,
# so coverage is not recorded.
Coverage.start
coverage_test_restarting
p Coverage.result
# Restart coverage and '/test2.rb' is required after restart,
# so coverage is recorded.
Coverage.start
require tmp + "/test2.rb"
p Coverage.result
end;
}
}
end
def test_big_code
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts "__id__\n" * 10000
f.puts "def ignore(x); end"
f.puts "ignore([1"
f.puts "])"
end
assert_in_out_err(%w[-rcoverage], <<-"end;", ["10003"], [])
Coverage.start
tmp = Dir.pwd
require tmp + '/test.rb'
p Coverage.result[tmp + '/test.rb'].size
end;
}
}
end
def test_eval
bug13305 = '[ruby-core:80079] [Bug #13305]'
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts 'REPEATS = 400'
f.puts 'def add_method(target)'
f.puts ' REPEATS.times do'
f.puts ' target.class_eval(<<~RUBY, __FILE__, __LINE__ + 1)'
f.puts ' def foo'
f.puts ' #{"\n" * rand(REPEATS)}'
f.puts ' end'
f.puts ' 1'
f.puts ' RUBY'
f.puts ' end'
f.puts 'end'
end
assert_in_out_err(%w[-W0 -rcoverage], <<-"end;", ["[1, 1, 1, 400, nil, nil, nil, nil, nil, nil, nil]"], [], bug13305)
Coverage.start
tmp = Dir.pwd
require tmp + '/test.rb'
add_method(Class.new)
p Coverage.result[tmp + "/test.rb"]
end;
}
}
end
def test_nocoverage_optimized_line
assert_ruby_status(%w[], "#{<<-"begin;"}\n#{<<-'end;'}")
begin;
def foo(x)
x # optimized away
nil
end
end;
end
def test_coverage_optimized_branch
result = {
:branches => {
[:"&.", 0, 1, 0, 1, 8] => {
[:then, 1, 1, 0, 1, 8] => 0,
[:else, 2, 1, 0, 1, 8] => 1,
},
},
}
assert_coverage(<<~"end;", { branches: true }, result) # Bug #15476
nil&.foo
end;
end
def assert_coverage(code, opt, stdout)
stdout = [stdout] unless stdout.is_a?(Array)
stdout = stdout.map {|s| s.to_s }
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.write("test.rb", code)
assert_in_out_err(%w[-W0 -rcoverage], <<-"end;", stdout, [])
Coverage.start(#{ opt })
tmp = Dir.pwd
require tmp + '/test.rb'
r = Coverage.result[tmp + "/test.rb"]
if r[:methods]
h = {}
r[:methods].keys.sort_by {|key| key.drop(1) }.each do |key|
h[key] = r[:methods][key]
end
r[:methods].replace h
end
p r
end;
}
}
end
def test_line_coverage_for_multiple_lines
result = {
:lines => [nil, 1, nil, nil, nil, 1, nil, nil, nil, 1, nil, 1, nil, nil, nil, nil, 1, 1, nil, 1, nil, nil, nil, nil, 1]
}
assert_coverage(<<~"end;", { lines: true }, result) # Bug #14191
FOO = [
{ foo: 'bar' },
{ bar: 'baz' }
]
'some string'.split
.map(&:length)
some =
'value'
Struct.new(
:foo,
:bar
).new
class Test
def foo(bar)
{
foo: bar
}
end
end
Test.new.foo(Object.new)
end;
end
def test_branch_coverage_for_if_statement
result = {
:branches => {
[:if , 0, 2, 2, 6, 5] => {[:then, 1, 3, 4, 3, 5]=>2, [:else, 2, 5, 4, 5, 5]=>1},
[:unless, 3, 8, 2, 12, 5] => {[:else, 4, 11, 4, 11, 5]=>2, [:then, 5, 9, 4, 9, 5]=>1},
[:if , 6, 14, 2, 16, 5] => {[:then, 7, 15, 4, 15, 5]=>2, [:else, 8, 14, 2, 16, 5]=>1},
[:unless, 9, 18, 2, 20, 5] => {[:else, 10, 18, 2, 20, 5]=>2, [:then, 11, 19, 4, 19, 5]=>1},
[:if , 12, 22, 2, 22, 13] => {[:then, 13, 22, 2, 22, 3]=>2, [:else, 14, 22, 2, 22, 13]=>1},
[:unless, 15, 23, 2, 23, 17] => {[:else, 16, 23, 2, 23, 17]=>2, [:then, 17, 23, 2, 23, 3]=>1},
[:if , 18, 25, 2, 25, 16] => {[:then, 19, 25, 11, 25, 12]=>2, [:else, 20, 25, 15, 25, 16]=>1},
}
}
assert_coverage(<<~"end;", { branches: true }, result)
def foo(x)
if x == 0
0
else
1
end
unless x == 0
0
else
1
end
if x == 0
0
end
unless x == 0
0
end
0 if x == 0
0 unless x == 0
x == 0 ? 0 : 1
end
foo(0)
foo(0)
foo(1)
end;
end
def test_branch_coverage_for_while_statement
result = {
:branches => {
[:while, 0, 2, 0, 4, 3] => {[:body, 1, 3, 2, 3, 8]=> 3},
[:until, 2, 5, 0, 7, 3] => {[:body, 3, 6, 2, 6, 8]=>10},
[:while, 4, 10, 0, 10, 18] => {[:body, 5, 10, 0, 10, 6]=> 3},
[:until, 6, 11, 0, 11, 20] => {[:body, 7, 11, 0, 11, 6]=>10},
}
}
assert_coverage(<<~"end;", { branches: true }, result)
x = 3
while x > 0
x -= 1
end
until x == 10
x += 1
end
y = 3
y -= 1 while y > 0
y += 1 until y == 10
end;
end
def test_branch_coverage_for_case_statement
result = {
:branches => {
[:case, 0, 2, 2, 7, 5] => {[:when, 1, 4, 4, 4, 5]=>2, [:when, 2, 6, 4, 6, 5]=>0, [:else, 3, 2, 2, 7, 5]=>1},
[:case, 4, 9, 2, 14, 5] => {[:when, 5, 11, 4, 11, 5]=>2, [:when, 6, 13, 4, 13, 5]=>0, [:else, 7, 9, 2, 14, 5]=>1},
[:case, 8, 16, 2, 23, 5] => {[:when, 9, 18, 4, 18, 5]=>2, [:when, 10, 20, 4, 20, 5]=>0, [:else, 11, 22, 4, 22, 10]=>1},
[:case, 12, 25, 2, 32, 5] => {[:when, 13, 27, 4, 27, 5]=>2, [:when, 14, 29, 4, 29, 5]=>0, [:else, 15, 31, 4, 31, 10]=>1},
}
}
assert_coverage(<<~"end;", { branches: true }, result)
def foo(x)
case x
when 0
0
when 1
1
end
case
when x == 0
0
when x == 1
1
end
case x
when 0
0
when 1
1
else
:other
end
case
when x == 0
0
when x == 1
1
else
:other
end
end
foo(0)
foo(0)
foo(2)
end;
end
def test_branch_coverage_for_pattern_matching
result = {
:branches=> {
[:case, 0, 3, 4, 8, 7] => {[:in, 1, 5, 6, 5, 7]=>2, [:in, 2, 7, 6, 7, 7]=>0, [:else, 3, 3, 4, 8, 7]=>1},
[:case, 4, 12, 2, 17, 5] => {[:in, 5, 14, 4, 14, 5]=>2, [:else, 6, 16, 4, 16, 5]=>1}},
}
assert_coverage(<<~"end;", { branches: true }, result)
def foo(x)
begin
case x
in 0
0
in 1
1
end
rescue NoMatchingPatternError
end
case x
in 0
0
else
1
end
end
foo(0)
foo(0)
foo(2)
end;
end
def test_branch_coverage_for_safe_method_invocation
result = {
:branches=>{
[:"&.", 0, 6, 0, 6, 6] => {[:then, 1, 6, 0, 6, 6]=>1, [:else, 2, 6, 0, 6, 6]=>0},
[:"&.", 3, 7, 0, 7, 6] => {[:then, 4, 7, 0, 7, 6]=>0, [:else, 5, 7, 0, 7, 6]=>1},
[:"&.", 6, 8, 0, 8, 10] => {[:then, 7, 8, 0, 8, 10]=>1, [:else, 8, 8, 0, 8, 10]=>0},
[:"&.", 9, 9, 0, 9, 10] => {[:then, 10, 9, 0, 9, 10]=>0, [:else, 11, 9, 0, 9, 10]=>1},
}
}
assert_coverage(<<~"end;", { branches: true }, result)
class Dummy; def foo; end; def foo=(x); end; end
a = Dummy.new
b = nil
c = Dummy.new
d = nil
a&.foo
b&.foo
c&.foo = 1
d&.foo = 1
end;
end
def test_method_coverage
result = {
:methods => {
[Object, :bar, 2, 0, 3, 3] => 1,
[Object, :baz, 4, 1, 4, 13] => 0,
[Object, :foo, 1, 0, 1, 12] => 2,
}
}
assert_coverage(<<~"end;", { methods: true }, result)
def foo; end
def bar
end
def baz; end
foo
foo
bar
end;
end
def test_method_coverage_for_define_method
result = {
:methods => {
[Object, :a, 6, 18, 6, 25] => 2,
[Object, :b, 7, 18, 8, 3] => 0,
[Object, :bar, 2, 20, 3, 1] => 1,
[Object, :baz, 4, 9, 4, 11] => 0,
[Object, :foo, 1, 20, 1, 22] => 2,
}
}
assert_coverage(<<~"end;", { methods: true }, result)
define_method(:foo) {}
define_method(:bar) {
}
f = proc {}
define_method(:baz, &f)
define_method(:a) do; end
define_method(:b) do
end
foo
foo
bar
a
a
end;
end
class DummyConstant < String
def inspect
self
end
end
def test_method_coverage_for_alias
_C = DummyConstant.new("C")
_M = DummyConstant.new("M")
code = <<~"end;"
module M
def foo
end
alias bar foo
end
class C
include M
def baz
end
alias qux baz
end
end;
result = {
:methods => {
[_C, :baz, 8, 2, 9, 5] => 0,
[_M, :foo, 2, 2, 3, 5] => 0,
}
}
assert_coverage(code, { methods: true }, result)
result = {
:methods => {
[_C, :baz, 8, 2, 9, 5] => 12,
[_M, :foo, 2, 2, 3, 5] => 3,
}
}
assert_coverage(code + <<~"end;", { methods: true }, result)
obj = C.new
1.times { obj.foo }
2.times { obj.bar }
4.times { obj.baz }
8.times { obj.qux }
end;
end
def test_method_coverage_for_singleton_class
_singleton_Foo = DummyConstant.new("#<Class:Foo>")
_Foo = DummyConstant.new("Foo")
code = <<~"end;"
class Foo
def foo
end
alias bar foo
def self.baz
end
class << self
alias qux baz
end
end
1.times { Foo.new.foo }
2.times { Foo.new.bar }
4.times { Foo.baz }
8.times { Foo.qux }
end;
result = {
:methods => {
[_singleton_Foo, :baz, 5, 2, 6, 5] => 12,
[_Foo, :foo, 2, 2, 3, 5] => 3,
}
}
assert_coverage(code, { methods: true }, result)
end
def test_oneshot_line_coverage
result = {
:oneshot_lines => [2, 6, 10, 12, 17, 18, 25, 20]
}
assert_coverage(<<~"end;", { oneshot_lines: true }, result)
FOO = [
{ foo: 'bar' }, # 2
{ bar: 'baz' }
]
'some string'.split # 6
.map(&:length)
some =
'value' # 10
Struct.new( # 12
:foo,
:bar
).new
class Test # 17
def foo(bar) # 18
{
foo: bar # 20
}
end
end
Test.new.foo(Object.new) # 25
end;
end
def test_clear_with_lines
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts "def foo(x)"
f.puts " if x > 0"
f.puts " :pos"
f.puts " else"
f.puts " :non_pos"
f.puts " end"
f.puts "end"
end
exp = [
"{:lines=>[1, 0, 0, nil, 0, nil, nil]}",
"{:lines=>[0, 1, 1, nil, 0, nil, nil]}",
"{:lines=>[0, 1, 0, nil, 1, nil, nil]}",
]
assert_in_out_err(%w[-rcoverage], <<-"end;", exp, [])
Coverage.start(lines: true)
tmp = Dir.pwd
f = tmp + "/test.rb"
require f
p Coverage.result(stop: false, clear: true)[f]
foo(1)
p Coverage.result(stop: false, clear: true)[f]
foo(-1)
p Coverage.result[f]
end;
}
}
end
def test_clear_with_branches
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts "def foo(x)"
f.puts " if x > 0"
f.puts " :pos"
f.puts " else"
f.puts " :non_pos"
f.puts " end"
f.puts "end"
end
exp = [
"{:branches=>{[:if, 0, 2, 2, 6, 5]=>{[:then, 1, 3, 4, 3, 8]=>0, [:else, 2, 5, 4, 5, 12]=>0}}}",
"{:branches=>{[:if, 0, 2, 2, 6, 5]=>{[:then, 1, 3, 4, 3, 8]=>1, [:else, 2, 5, 4, 5, 12]=>0}}}",
"{:branches=>{[:if, 0, 2, 2, 6, 5]=>{[:then, 1, 3, 4, 3, 8]=>0, [:else, 2, 5, 4, 5, 12]=>1}}}",
"{:branches=>{[:if, 0, 2, 2, 6, 5]=>{[:then, 1, 3, 4, 3, 8]=>0, [:else, 2, 5, 4, 5, 12]=>1}}}",
]
assert_in_out_err(%w[-rcoverage], <<-"end;", exp, [])
Coverage.start(branches: true)
tmp = Dir.pwd
f = tmp + "/test.rb"
require f
p Coverage.result(stop: false, clear: true)[f]
foo(1)
p Coverage.result(stop: false, clear: true)[f]
foo(-1)
p Coverage.result(stop: false, clear: true)[f]
foo(-1)
p Coverage.result(stop: false, clear: true)[f]
end;
}
}
end
def test_clear_with_methods
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts "def foo(x)"
f.puts " if x > 0"
f.puts " :pos"
f.puts " else"
f.puts " :non_pos"
f.puts " end"
f.puts "end"
end
exp = [
"{:methods=>{[Object, :foo, 1, 0, 7, 3]=>0}}",
"{:methods=>{[Object, :foo, 1, 0, 7, 3]=>1}}",
"{:methods=>{[Object, :foo, 1, 0, 7, 3]=>1}}",
"{:methods=>{[Object, :foo, 1, 0, 7, 3]=>1}}"
]
assert_in_out_err(%w[-rcoverage], <<-"end;", exp, [])
Coverage.start(methods: true)
tmp = Dir.pwd
f = tmp + "/test.rb"
require f
p Coverage.result(stop: false, clear: true)[f]
foo(1)
p Coverage.result(stop: false, clear: true)[f]
foo(-1)
p Coverage.result(stop: false, clear: true)[f]
foo(-1)
p Coverage.result(stop: false, clear: true)[f]
end;
}
}
end
def test_clear_with_oneshot_lines
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts "def foo(x)"
f.puts " if x > 0"
f.puts " :pos"
f.puts " else"
f.puts " :non_pos"
f.puts " end"
f.puts "end"
end
exp = [
"{:oneshot_lines=>[1]}",
"{:oneshot_lines=>[2, 3]}",
"{:oneshot_lines=>[5]}",
"{:oneshot_lines=>[]}",
]
assert_in_out_err(%w[-rcoverage], <<-"end;", exp, [])
Coverage.start(oneshot_lines: true)
tmp = Dir.pwd
f = tmp + "/test.rb"
require f
p Coverage.result(stop: false, clear: true)[f]
foo(1)
p Coverage.result(stop: false, clear: true)[f]
foo(-1)
p Coverage.result(stop: false, clear: true)[f]
foo(-1)
p Coverage.result(stop: false, clear: true)[f]
end;
}
}
end
def test_line_stub
Dir.mktmpdir {|tmp|
Dir.chdir(tmp) {
File.open("test.rb", "w") do |f|
f.puts "def foo(x)"
f.puts " if x > 0"
f.puts " :pos"
f.puts " else"
f.puts " :non_pos"
f.puts " end"
f.puts "end"
end
assert_equal([0, 0, 0, nil, 0, nil, nil], Coverage.line_stub("test.rb"))
}
}
end
end