diff --git a/Makefile b/Makefile
index 90955ee388afd00cd939f228afb9ea7ba25036fd..d80f607c5758fe32294f08ad4857b18a5c51a717 100644
--- a/Makefile
+++ b/Makefile
@@ -6964,6 +6964,7 @@ endif
 
 LIBEND2END_TESTS_SRC = \
     test/core/end2end/end2end_tests.c \
+    test/core/end2end/end2end_test_utils.c \
     test/core/end2end/tests/bad_hostname.c \
     test/core/end2end/tests/binary_metadata.c \
     test/core/end2end/tests/call_creds.c \
@@ -7048,6 +7049,7 @@ endif
 
 LIBEND2END_NOSEC_TESTS_SRC = \
     test/core/end2end/end2end_nosec_tests.c \
+    test/core/end2end/end2end_test_utils.c \
     test/core/end2end/tests/bad_hostname.c \
     test/core/end2end/tests/binary_metadata.c \
     test/core/end2end/tests/cancel_after_accept.c \
diff --git a/test/core/end2end/end2end_test_utils.c b/test/core/end2end/end2end_test_utils.c
new file mode 100644
index 0000000000000000000000000000000000000000..46fb4ec1aff7917c80979fa4b01fe8f05d6e118b
--- /dev/null
+++ b/test/core/end2end/end2end_test_utils.c
@@ -0,0 +1,51 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "test/core/end2end/end2end_tests.h"
+
+#include <string.h>
+
+#include <grpc/support/log.h>
+
+const char *get_host_override_string(const char *str,
+                                     grpc_end2end_test_config config) {
+  return (config.feature_mask & FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER ? str
+                                                                       : NULL);
+}
+
+void validate_host_override_string(const char *pattern, const char *str,
+                                   grpc_end2end_test_config config) {
+  if (config.feature_mask & FEATURE_MASK_SUPPORTS_AUTHORITY_HEADER) {
+    GPR_ASSERT(0 == strcmp(str, pattern));
+  }
+}
diff --git a/test/core/end2end/gen_build_yaml.py b/test/core/end2end/gen_build_yaml.py
index 7f33e07a003284c0ef803ccf4410fca05ffc1b7a..26eee934398c6a9077d1b0242adea20c2a4b6870 100755
--- a/test/core/end2end/gen_build_yaml.py
+++ b/test/core/end2end/gen_build_yaml.py
@@ -190,7 +190,8 @@ def main():
               'build': 'private',
               'language': 'c',
               'secure': True,
-              'src': ['test/core/end2end/end2end_tests.c'] + [
+              'src': ['test/core/end2end/end2end_tests.c',
+                      'test/core/end2end/end2end_test_utils.c'] + [
                   'test/core/end2end/tests/%s.c' % t
                   for t in sorted(END2END_TESTS.keys())],
               'headers': ['test/core/end2end/tests/cancel_test_helpers.h',
@@ -204,7 +205,8 @@ def main():
               'build': 'private',
               'language': 'c',
               'secure': False,
-              'src': ['test/core/end2end/end2end_nosec_tests.c'] + [
+              'src': ['test/core/end2end/end2end_nosec_tests.c',
+                      'test/core/end2end/end2end_test_utils.c'] + [
                   'test/core/end2end/tests/%s.c' % t
                   for t in sorted(END2END_TESTS.keys())
                   if not END2END_TESTS[t].secure],
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index b5ec3aecc94e30ee8709b04cb61685b9b8815396..2b5147a973754cdbc1db641ef398047816ec73dc 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -6238,6 +6238,7 @@
     "language": "c", 
     "name": "end2end_tests", 
     "src": [
+      "test/core/end2end/end2end_test_utils.c", 
       "test/core/end2end/end2end_tests.c", 
       "test/core/end2end/end2end_tests.h", 
       "test/core/end2end/tests/bad_hostname.c", 
@@ -6306,6 +6307,7 @@
     "name": "end2end_nosec_tests", 
     "src": [
       "test/core/end2end/end2end_nosec_tests.c", 
+      "test/core/end2end/end2end_test_utils.c", 
       "test/core/end2end/end2end_tests.h", 
       "test/core/end2end/tests/bad_hostname.c", 
       "test/core/end2end/tests/binary_metadata.c", 
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
index a47c40f0f7358315bb37a64b2321be297a07bd90..3d510d5156858c849b64f216b6bbe3f834aa8ca8 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj
@@ -153,6 +153,8 @@
   <ItemGroup>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\end2end_nosec_tests.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\end2end_test_utils.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_hostname.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\binary_metadata.c">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
index 71cf6838fe2089fe14809789280543efb8efc15b..a0b01ddbc892eff0ab24d406acaba354badf7abd 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_nosec_tests/end2end_nosec_tests.vcxproj.filters
@@ -4,6 +4,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\end2end_nosec_tests.c">
       <Filter>test\core\end2end</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\end2end_test_utils.c">
+      <Filter>test\core\end2end</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_hostname.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
index 68ff5f1ebd85e1e0573c9de85aaccb41ecd998bd..5699e8308ed16d9748a06d68e8c73c9d6e9af15f 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj
@@ -153,6 +153,8 @@
   <ItemGroup>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\end2end_tests.c">
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\end2end_test_utils.c">
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_hostname.c">
     </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\binary_metadata.c">
diff --git a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
index 7a620f61a54151bd02a5b01eab816b7b894731f6..bfb5e2b2292453663683a51e2acd629d25c2336f 100644
--- a/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
+++ b/vsprojects/vcxproj/test/end2end/tests/end2end_tests/end2end_tests.vcxproj.filters
@@ -4,6 +4,9 @@
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\end2end_tests.c">
       <Filter>test\core\end2end</Filter>
     </ClCompile>
+    <ClCompile Include="$(SolutionDir)\..\test\core\end2end\end2end_test_utils.c">
+      <Filter>test\core\end2end</Filter>
+    </ClCompile>
     <ClCompile Include="$(SolutionDir)\..\test\core\end2end\tests\bad_hostname.c">
       <Filter>test\core\end2end\tests</Filter>
     </ClCompile>