Initial copy of api tests from tempest

This change is the result of running
tools/copy_api_tests_from_tempest.sh.

Change-Id: Ica02dbe1ed26f1bc9526ea9682756ebc5877cf4a
diff --git a/neutron/tests/tempest/common/custom_matchers.py b/neutron/tests/tempest/common/custom_matchers.py
new file mode 100644
index 0000000..298a94e
--- /dev/null
+++ b/neutron/tests/tempest/common/custom_matchers.py
@@ -0,0 +1,226 @@
+# Copyright 2013 NTT Corporation
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+import re
+
+from testtools import helpers
+
+
+class ExistsAllResponseHeaders(object):
+    """
+    Specific matcher to check the existence of Swift's response headers
+
+    This matcher checks the existence of common headers for each HTTP method
+    or the target, which means account, container or object.
+    When checking the existence of 'specific' headers such as
+    X-Account-Meta-* or X-Object-Manifest for example, those headers must be
+    checked in each test code.
+    """
+
+    def __init__(self, target, method):
+        """
+        param: target Account/Container/Object
+        param: method PUT/GET/HEAD/DELETE/COPY/POST
+        """
+        self.target = target
+        self.method = method
+
+    def match(self, actual):
+        """
+        param: actual HTTP response headers
+        """
+        # Check common headers for all HTTP methods
+        if 'content-length' not in actual:
+            return NonExistentHeader('content-length')
+        if 'content-type' not in actual:
+            return NonExistentHeader('content-type')
+        if 'x-trans-id' not in actual:
+            return NonExistentHeader('x-trans-id')
+        if 'date' not in actual:
+            return NonExistentHeader('date')
+
+        # Check headers for a specific method or target
+        if self.method == 'GET' or self.method == 'HEAD':
+            if 'x-timestamp' not in actual:
+                return NonExistentHeader('x-timestamp')
+            if 'accept-ranges' not in actual:
+                return NonExistentHeader('accept-ranges')
+            if self.target == 'Account':
+                if 'x-account-bytes-used' not in actual:
+                    return NonExistentHeader('x-account-bytes-used')
+                if 'x-account-container-count' not in actual:
+                    return NonExistentHeader('x-account-container-count')
+                if 'x-account-object-count' not in actual:
+                    return NonExistentHeader('x-account-object-count')
+            elif self.target == 'Container':
+                if 'x-container-bytes-used' not in actual:
+                    return NonExistentHeader('x-container-bytes-used')
+                if 'x-container-object-count' not in actual:
+                    return NonExistentHeader('x-container-object-count')
+            elif self.target == 'Object':
+                if 'etag' not in actual:
+                    return NonExistentHeader('etag')
+                if 'last-modified' not in actual:
+                    return NonExistentHeader('last-modified')
+        elif self.method == 'PUT':
+            if self.target == 'Object':
+                if 'etag' not in actual:
+                    return NonExistentHeader('etag')
+                if 'last-modified' not in actual:
+                    return NonExistentHeader('last-modified')
+        elif self.method == 'COPY':
+            if self.target == 'Object':
+                if 'etag' not in actual:
+                    return NonExistentHeader('etag')
+                if 'last-modified' not in actual:
+                    return NonExistentHeader('last-modified')
+                if 'x-copied-from' not in actual:
+                    return NonExistentHeader('x-copied-from')
+                if 'x-copied-from-last-modified' not in actual:
+                    return NonExistentHeader('x-copied-from-last-modified')
+
+        return None
+
+
+class NonExistentHeader(object):
+    """
+    Informs an error message for end users in the case of missing a
+    certain header in Swift's responses
+    """
+
+    def __init__(self, header):
+        self.header = header
+
+    def describe(self):
+        return "%s header does not exist" % self.header
+
+    def get_details(self):
+        return {}
+
+
+class AreAllWellFormatted(object):
+    """
+    Specific matcher to check the correctness of formats of values of Swift's
+    response headers
+
+    This matcher checks the format of values of response headers.
+    When checking the format of values of 'specific' headers such as
+    X-Account-Meta-* or X-Object-Manifest for example, those values must be
+    checked in each test code.
+    """
+
+    def match(self, actual):
+        for key, value in actual.iteritems():
+            if key in ('content-length', 'x-account-bytes-used',
+                       'x-account-container-count', 'x-account-object-count',
+                       'x-container-bytes-used', 'x-container-object-count')\
+                and not value.isdigit():
+                return InvalidFormat(key, value)
+            elif key in ('content-type', 'date', 'last-modified',
+                         'x-copied-from-last-modified') and not value:
+                return InvalidFormat(key, value)
+            elif key == 'x-timestamp' and not re.match("^\d+\.?\d*\Z", value):
+                return InvalidFormat(key, value)
+            elif key == 'x-copied-from' and not re.match("\S+/\S+", value):
+                return InvalidFormat(key, value)
+            elif key == 'x-trans-id' and \
+                not re.match("^tx[0-9a-f]{21}-[0-9a-f]{10}.*", value):
+                return InvalidFormat(key, value)
+            elif key == 'accept-ranges' and not value == 'bytes':
+                return InvalidFormat(key, value)
+            elif key == 'etag' and not value.isalnum():
+                return InvalidFormat(key, value)
+            elif key == 'transfer-encoding' and not value == 'chunked':
+                return InvalidFormat(key, value)
+
+        return None
+
+
+class InvalidFormat(object):
+    """
+    Informs an error message for end users if a format of a certain header
+    is invalid
+    """
+
+    def __init__(self, key, value):
+        self.key = key
+        self.value = value
+
+    def describe(self):
+        return "InvalidFormat (%s, %s)" % (self.key, self.value)
+
+    def get_details(self):
+        return {}
+
+
+class MatchesDictExceptForKeys(object):
+    """Matches two dictionaries. Verifies all items are equals except for those
+    identified by a list of keys.
+    """
+
+    def __init__(self, expected, excluded_keys=None):
+        self.expected = expected
+        self.excluded_keys = excluded_keys if excluded_keys is not None else []
+
+    def match(self, actual):
+        filtered_expected = helpers.dict_subtract(self.expected,
+                                                  self.excluded_keys)
+        filtered_actual = helpers.dict_subtract(actual,
+                                                self.excluded_keys)
+        if filtered_actual != filtered_expected:
+            return DictMismatch(filtered_expected, filtered_actual)
+
+
+class DictMismatch(object):
+    """Mismatch between two dicts describes deltas"""
+
+    def __init__(self, expected, actual):
+        self.expected = expected
+        self.actual = actual
+        self.intersect = set(self.expected) & set(self.actual)
+        self.symmetric_diff = set(self.expected) ^ set(self.actual)
+
+    def _format_dict(self, dict_to_format):
+        # Ensure the error string dict is printed in a set order
+        # NOTE(mtreinish): needed to ensure a deterministic error msg for
+        # testing. Otherwise the error message will be dependent on the
+        # dict ordering.
+        dict_string = "{"
+        for key in sorted(dict_to_format):
+            dict_string += "'%s': %s, " % (key, dict_to_format[key])
+        dict_string = dict_string[:-2] + '}'
+        return dict_string
+
+    def describe(self):
+        msg = ""
+        if self.symmetric_diff:
+            only_expected = helpers.dict_subtract(self.expected, self.actual)
+            only_actual = helpers.dict_subtract(self.actual, self.expected)
+            if only_expected:
+                msg += "Only in expected:\n  %s\n" % self._format_dict(
+                    only_expected)
+            if only_actual:
+                msg += "Only in actual:\n  %s\n" % self._format_dict(
+                    only_actual)
+        diff_set = set(o for o in self.intersect if
+                       self.expected[o] != self.actual[o])
+        if diff_set:
+            msg += "Differences:\n"
+            for o in diff_set:
+                msg += "  %s: expected %s, actual %s\n" % (
+                    o, self.expected[o], self.actual[o])
+        return msg
+
+    def get_details(self):
+        return {}