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# frozen_string_literal: false
require_relative 'helper'
module DTrace
class TestSingletonFunctionEntry < TestCase
def test_entry
probe = <<-eoprobe
ruby$target:::method-entry
/strstr(copyinstr(arg0), "Foo") != NULL/
{
printf("%s %s %s %d\\n", copyinstr(arg0), copyinstr(arg1), copyinstr(arg2), arg3);
}
eoprobe
trap_probe(probe, ruby_program) { |d_file, rb_file, probes|
foo_calls = probes.map { |line| line.split }.find_all { |row|
row.first == 'Foo' && row[1] == 'foo'
}
assert_equal 10, foo_calls.length
line = '2'
foo_calls.each { |f| assert_equal line, f[3] }
foo_calls.each { |f| assert_equal rb_file, f[2] }
}
end
def test_exit
probe = <<-eoprobe
ruby$target:::method-return
{
printf("%s %s %s %d\\n", copyinstr(arg0), copyinstr(arg1), copyinstr(arg2), arg3);
}
eoprobe
trap_probe(probe, ruby_program) { |d_file, rb_file, probes|
foo_calls = probes.map { |line| line.split }.find_all { |row|
row.first == 'Foo' && row[1] == 'foo'
}
assert_equal 10, foo_calls.length
line = '2'
foo_calls.each { |f| assert_equal line, f[3] }
foo_calls.each { |f| assert_equal rb_file, f[2] }
}
end
def ruby_program
<<-eoruby
class Foo
def self.foo; end
end
10.times { Foo.foo }
eoruby
end
end
end if defined?(DTrace::TestCase)
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