diff --git a/tests/bytes.rs b/tests/bytes.rs
index fc391b1a5e..3568ba005c 100644
--- a/tests/bytes.rs
+++ b/tests/bytes.rs
@@ -43,20 +43,20 @@ mat!(null_bytes, r"(?-u)(?P<cstr>[^\x00]+)\x00",
 // Test that lookahead operators work properly in the face of invalid UTF-8.
 // See: /~https://github.com/rust-lang-nursery/regex/issues/277
 matiter!(invalidutf8_anchor1,
-         r"\xcc?^",
+         r"(?-u)\xcc?^",
          R(b"\x8d#;\x1a\xa4s3\x05foobarX\\\x0f0t\xe4\x9b\xa4"),
          (0, 0));
 matiter!(invalidutf8_anchor2,
-         r"^\xf7|4\xff\d\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a##########[] d\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a##########[] #####\x80\S7|$",
+         r"(?-u)^\xf7|4\xff\d\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a##########[] d\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a\x8a##########[] #####\x80\S7|$",
          R(b"\x8d#;\x1a\xa4s3\x05foobarX\\\x0f0t\xe4\x9b\xa4"),
          (22, 22));
 matiter!(invalidutf8_anchor3,
-         r"^|ddp\xff\xffdddddlQd@\x80",
+         r"(?-u)^|ddp\xff\xffdddddlQd@\x80",
          R(b"\x8d#;\x1a\xa4s3\x05foobarX\\\x0f0t\xe4\x9b\xa4"),
          (0, 0));
 
 // See /~https://github.com/rust-lang-nursery/regex/issues/303
 #[test]
 fn negated_full_byte_range() {
-     assert!(::regex::bytes::Regex::new(r#"[^\x00-\xff]"#).is_err());
+     assert!(::regex::bytes::Regex::new(r#"(?-u)[^\x00-\xff]"#).is_err());
 }
diff --git a/tests/regression.rs b/tests/regression.rs
index 8484b9fe81..5961d66263 100644
--- a/tests/regression.rs
+++ b/tests/regression.rs
@@ -62,23 +62,23 @@ matiter!(word_boundary_dfa, r"\b", "a b c",
 matiter!(partial_anchor, r"^a|b", "ba", (0, 1));
 
 // See: /~https://github.com/rust-lang-nursery/regex/issues/264
-mat!(ascii_boundary_no_capture, u!(r"(?-u)\B"), "\u{28f3e}", Some((0, 0)));
-mat!(ascii_boundary_capture, u!(r"(?-u)(\B)"), "\u{28f3e}", Some((0, 0)));
+mat!(ascii_boundary_no_capture, r"(?-u)\B", "\u{28f3e}", Some((0, 0)));
+mat!(ascii_boundary_capture, r"(?-u)(\B)", "\u{28f3e}", Some((0, 0)));
 
 // See: /~https://github.com/rust-lang-nursery/regex/issues/280
-ismatch!(partial_anchor_alternate_begin, u!(r"^a|z"), "yyyyya", false);
-ismatch!(partial_anchor_alternate_end, u!(r"a$|z"), "ayyyyy", false);
+ismatch!(partial_anchor_alternate_begin, r"^a|z", "yyyyya", false);
+ismatch!(partial_anchor_alternate_end, r"a$|z", "ayyyyy", false);
 
 // See: /~https://github.com/rust-lang-nursery/regex/issues/289
-mat!(lits_unambiguous1, u!(r"(ABC|CDA|BC)X"), "CDAX", Some((0, 4)));
+mat!(lits_unambiguous1, r"(ABC|CDA|BC)X", "CDAX", Some((0, 4)));
 
 // See: /~https://github.com/rust-lang-nursery/regex/issues/291
-mat!(lits_unambiguous2, u!(r"((IMG|CAM|MG|MB2)_|(DSCN|CIMG))(?P<n>[0-9]+)$"),
+mat!(lits_unambiguous2, r"((IMG|CAM|MG|MB2)_|(DSCN|CIMG))(?P<n>[0-9]+)$",
      "CIMG2341", Some((0, 8)), Some((0, 4)), None, Some((0, 4)), Some((4, 8)));
 
 // See: /~https://github.com/rust-lang-nursery/regex/issues/271
-mat!(end_not_wb, u!(r"$(?-u:\B)"), "\u{5c124}\u{b576c}", Some((8, 8)));
-mat!(endl_or_wb, u!(r"(?m:$)|(?-u:\b)"), "\u{6084e}", Some((4, 4)));
-mat!(zero_or_end, u!(r"(?i-u:\x00)|$"), "\u{e682f}", Some((4, 4)));
-mat!(y_or_endl, u!(r"(?i-u:y)|(?m:$)"), "\u{b4331}", Some((4, 4)));
-mat!(wb_start_x, u!(r"(?u:\b)^(?-u:X)"), "X", Some((0, 1)));
+mat!(end_not_wb, r"$(?-u:\B)", "\u{5c124}\u{b576c}", Some((8, 8)));
+mat!(endl_or_wb, r"(?m:$)|(?-u:\b)", "\u{6084e}", Some((4, 4)));
+mat!(zero_or_end, r"(?i-u:\x00)|$", "\u{e682f}", Some((4, 4)));
+mat!(y_or_endl, r"(?i-u:y)|(?m:$)", "\u{b4331}", Some((4, 4)));
+mat!(wb_start_x, r"(?u:\b)^(?-u:X)", "X", Some((0, 1)));
diff --git a/tests/test_backtrack.rs b/tests/test_backtrack.rs
index 7861a3db88..5516c840e7 100644
--- a/tests/test_backtrack.rs
+++ b/tests/test_backtrack.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![cfg_attr(feature = "pattern", feature(pattern))]
+
 extern crate rand;
 extern crate regex;
 
diff --git a/tests/test_backtrack_utf8bytes.rs b/tests/test_backtrack_utf8bytes.rs
index 2bf9456292..a170d19324 100644
--- a/tests/test_backtrack_utf8bytes.rs
+++ b/tests/test_backtrack_utf8bytes.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![cfg_attr(feature = "pattern", feature(pattern))]
+
 extern crate rand;
 extern crate regex;
 
diff --git a/tests/test_default.rs b/tests/test_default.rs
index 452872d35d..e6cf92fa2e 100644
--- a/tests/test_default.rs
+++ b/tests/test_default.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![cfg_attr(feature = "pattern", feature(pattern))]
+
 extern crate rand;
 extern crate regex;
 
diff --git a/tests/test_nfa.rs b/tests/test_nfa.rs
index abf24561fd..8a831c47d3 100644
--- a/tests/test_nfa.rs
+++ b/tests/test_nfa.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![cfg_attr(feature = "pattern", feature(pattern))]
+
 extern crate rand;
 extern crate regex;
 
diff --git a/tests/test_nfa_bytes.rs b/tests/test_nfa_bytes.rs
index a084c804fe..f376cefe1f 100644
--- a/tests/test_nfa_bytes.rs
+++ b/tests/test_nfa_bytes.rs
@@ -1,4 +1,3 @@
-
 // Copyright 2014-2015 The Rust Project Developers. See the COPYRIGHT
 // file at the top-level directory of this distribution and at
 // http://rust-lang.org/COPYRIGHT.
diff --git a/tests/test_nfa_utf8bytes.rs b/tests/test_nfa_utf8bytes.rs
index 5926de7bd6..5d13685aab 100644
--- a/tests/test_nfa_utf8bytes.rs
+++ b/tests/test_nfa_utf8bytes.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![cfg_attr(feature = "pattern", feature(pattern))]
+
 extern crate rand;
 extern crate regex;