assert_equal 3, trace.tags.length
assert_equal "foo", trace.tags[0].tag
assert_equal "bar", trace.tags[1].tag
assert_equal "baz", trace.tags[2].tag
assert_equal "foo, bar, baz", trace.tagstring
trace.tagstring = "foo, bar baz ,qux"
assert_equal 3, trace.tags.length
assert_equal "foo", trace.tags[0].tag
assert_equal "bar", trace.tags[1].tag
assert_equal "baz", trace.tags[2].tag
assert_equal "foo, bar, baz", trace.tagstring
trace.tagstring = "foo, bar baz ,qux"