461     ATF_REQUIRE( tree.is_set("var1"));  in ATF_TEST_CASE_BODY()
462     ATF_REQUIRE(!tree.is_set("var2"));  in ATF_TEST_CASE_BODY()
463     ATF_REQUIRE( tree.is_set("var3"));  in ATF_TEST_CASE_BODY()
479     ATF_REQUIRE(!tree.is_set("a"));  in ATF_TEST_CASE_BODY()
480     ATF_REQUIRE(!tree.is_set("a.b"));  in ATF_TEST_CASE_BODY()
481     ATF_REQUIRE( tree.is_set("a.b.var1"));  in ATF_TEST_CASE_BODY()
482     ATF_REQUIRE(!tree.is_set("a.b.var1.trailing"));  in ATF_TEST_CASE_BODY()
484     ATF_REQUIRE(!tree.is_set("a"));  in ATF_TEST_CASE_BODY()
485     ATF_REQUIRE(!tree.is_set("a.b"));  in ATF_TEST_CASE_BODY()
486     ATF_REQUIRE(!tree.is_set("a.b.var2"));  in ATF_TEST_CASE_BODY()
487     ATF_REQUIRE(!tree.is_set("a.b.var2.trailing"));  in ATF_TEST_CASE_BODY()
489     ATF_REQUIRE(!tree.is_set("e"));  in ATF_TEST_CASE_BODY()
490     ATF_REQUIRE( tree.is_set("e.var3"));  in ATF_TEST_CASE_BODY()
491     ATF_REQUIRE(!tree.is_set("e.var3.trailing"));  in ATF_TEST_CASE_BODY()
500     ATF_REQUIRE_THROW(config::invalid_key_error, tree.is_set(".abc"));  in ATF_TEST_CASE_BODY()
572     ATF_REQUIRE(!tree.is_set("abc"));  in ATF_TEST_CASE_BODY()
576     ATF_REQUIRE(!tree.is_set("foo.bar.baz"));  in ATF_TEST_CASE_BODY()
579     ATF_REQUIRE(!tree.is_set("a.c"));  in ATF_TEST_CASE_BODY()
780     ATF_REQUIRE(!tree.is_set("abc"));  in ATF_TEST_CASE_BODY()
784     ATF_REQUIRE(!tree.is_set("foo.bar.baz"));  in ATF_TEST_CASE_BODY()
787     ATF_REQUIRE(!tree.is_set("a.c"));  in ATF_TEST_CASE_BODY()