Move a bunch of src/ files into subdirectories.

lib/src/expect.dart

Index: lib/src/expect.dart
diff --git a/lib/src/expect.dart b/lib/src/expect.dart
deleted file mode 100644
index fd79527d698529141742e2baf1488e2b34b3f0da..0000000000000000000000000000000000000000
--- a/lib/src/expect.dart
+++ /dev/null
@@ -1,71 +0,0 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library unittest.expect;
-
-import 'package:matcher/matcher.dart';
-
-/// An exception thrown when a test assertion fails.
-class TestFailure {
-  final String message;
-
-  TestFailure(this.message);
-
-  String toString() => message;
-}
-
-/// The type used for functions that can be used to build up error reports
-/// upon failures in [expect].
-typedef String ErrorFormatter(
-    actual, Matcher matcher, String reason, Map matchState, bool verbose);
-
-/// Assert that [actual] matches [matcher].
-///
-/// This is the main assertion function. [reason] is optional and is typically
-/// not supplied, as a reason is generated from [matcher]; if [reason]
-/// is included it is appended to the reason generated by the matcher.
-///
-/// [matcher] can be a value in which case it will be wrapped in an
-/// [equals] matcher.
-///
-/// If the assertion fails a [TestFailure] is thrown.
-///
-/// In some cases extra diagnostic info can be produced on failure (for
-/// example, stack traces on mismatched exceptions). To enable these,
-/// [verbose] should be specified as `true`.
-void expect(actual, matcher,
-    {String reason, bool verbose: false, ErrorFormatter formatter}) {
-  matcher = wrapMatcher(matcher);
-  var matchState = {};
-  try {
-    if (matcher.matches(actual, matchState)) return;
-  } catch (e, trace) {
-    if (reason == null) {
-      reason = '${(e is String) ? e : e.toString()} at $trace';
-    }
-  }
-  if (formatter == null) formatter = _defaultFailFormatter;
-  fail(formatter(actual, matcher, reason, matchState, verbose));
-}
-
-/// Convenience method for throwing a new [TestFailure] with the provided
-/// [message].
-void fail(String message) => throw new TestFailure(message);
-
-// The default error formatter.
-String _defaultFailFormatter(
-    actual, Matcher matcher, String reason, Map matchState, bool verbose) {
-  var description = new StringDescription();
-  description.add('Expected: ').addDescriptionOf(matcher).add('\n');
-  description.add('  Actual: ').addDescriptionOf(actual).add('\n');
-
-  var mismatchDescription = new StringDescription();
-  matcher.describeMismatch(actual, mismatchDescription, matchState, verbose);
-
-  if (mismatchDescription.length > 0) {
-    description.add('   Which: ${mismatchDescription}\n');
-  }
-  if (reason != null) description.add(reason).add('\n');
-  return description.toString();
-}