diff --git a/Pipfile b/Pipfile
index 7662ce31e..80034fa06 100644
--- a/Pipfile
+++ b/Pipfile
@@ -20,6 +20,7 @@ mkdocs = "*"
 mkdocs-material = "*"
 markdown-include = "*"
 autoflake = "*"
+email-validator = "*"
 
 [packages]
 starlette = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index 184ef0034..e6e3576e2 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "deb42eb176158abbd62d0af06fc60f571ae7da3012f7baafb1bcca08c363273b"
+            "sha256": "64539bfa9f03f10715a5f83b1d62776513ae44518c0cff011b7540c17eada955"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -34,10 +34,10 @@
         },
         "starlette": {
             "hashes": [
-                "sha256:a7b24496638b9e755bc31a72b0596939f3dd0e6eb1878ff55da5647be026a9e3"
+                "sha256:01f04283b49a8cb0c8921baa90dbafe47e953f0a265f6ebb38176038e4bd9bf8"
             ],
             "index": "pypi",
-            "version": "==0.9.8"
+            "version": "==0.9.9"
         }
     },
     "develop": {
@@ -174,6 +174,13 @@
             ],
             "version": "==0.5.0"
         },
+        "dnspython": {
+            "hashes": [
+                "sha256:36c5e8e38d4369a08b6780b7f27d790a292b2b08eea01607865bf0936c558e01",
+                "sha256:f69c21288a962f4da86e56c4905b49d11aba7938d3d740e80d9e366ee4f1632d"
+            ],
+            "version": "==1.16.0"
+        },
         "docutils": {
             "hashes": [
                 "sha256:02aec4bd92ab067f6ff27a38a38a41173bf01bed8f89157768c1573f53e474a6",
@@ -188,6 +195,13 @@
             ],
             "version": "==0.1.9"
         },
+        "email-validator": {
+            "hashes": [
+                "sha256:ddc4b5b59fa699bb10127adcf7ad4de78fde4ec539a072b104b8bb16da666ae5"
+            ],
+            "index": "pypi",
+            "version": "==1.0.3"
+        },
         "entrypoints": {
             "hashes": [
                 "sha256:10ad569bb245e7e2ba425285b9fa3e8178a0dc92fc53b1e1c553805e15a8825b",
@@ -250,11 +264,11 @@
         },
         "jedi": {
             "hashes": [
-                "sha256:0191c447165f798e6a730285f2eee783fff81b0d3df261945ecb80983b5c3ca7",
-                "sha256:b7493f73a2febe0dc33d51c99b474547f7f6c0b2c8fb2b21f453eef204c12148"
+                "sha256:571702b5bd167911fe9036e5039ba67f820d6502832285cde8c881ab2b2149fd",
+                "sha256:c8481b5e59d34a5c7c42e98f6625e633f6ef59353abea6437472c7ec2093f191"
             ],
             "index": "pypi",
-            "version": "==0.13.1"
+            "version": "==0.13.2"
         },
         "jinja2": {
             "hashes": [
@@ -457,10 +471,10 @@
         },
         "notebook": {
             "hashes": [
-                "sha256:661341909008d1e7bfa1541904006f9789fa3de1cbec8379d2879819454cc04b",
-                "sha256:91705b109fc785198faed892489cddb233265564d5e2dad5e4f7974af05ee8dd"
+                "sha256:3ab2db8bc10e6edbd264c3c4b800bee276c99818386ee0c146d98d7e6bcf0a67",
+                "sha256:d908673a4010787625c8952e91a22adf737db031f2aa0793ad92f6558918a74a"
             ],
-            "version": "==5.7.2"
+            "version": "==5.7.4"
         },
         "pandocfilters": {
             "hashes": [
@@ -564,10 +578,10 @@
         },
         "pygments": {
             "hashes": [
-                "sha256:6301ecb0997a52d2d31385e62d0a4a4cf18d2f2da7054a5ddad5c366cd39cee7",
-                "sha256:82666aac15622bd7bb685a4ee7f6625dd716da3ef7473620c192c0168aae64fc"
+                "sha256:5ffada19f6203563680669ee7f53b64dabbeb100eb51b61996085e99c03b284a",
+                "sha256:e8218dd399a61674745138520d0d4cf2621d7e032439341bc3f647bff125818d"
             ],
-            "version": "==2.3.0"
+            "version": "==2.3.1"
         },
         "pylint": {
             "hashes": [
@@ -616,11 +630,11 @@
         },
         "pytest": {
             "hashes": [
-                "sha256:1d131cc532be0023ef8ae265e2a779938d0619bb6c2510f52987ffcba7fa1ee4",
-                "sha256:ca4761407f1acc85ffd1609f464ca20bb71a767803505bd4127d0e45c5a50e23"
+                "sha256:f689bf2fc18c4585403348dd56f47d87780bf217c53ed9ae7a3e2d7faa45f8e9",
+                "sha256:f812ea39a0153566be53d88f8de94839db1e8a05352ed8a49525d7d7f37861e9"
             ],
             "index": "pypi",
-            "version": "==4.0.1"
+            "version": "==4.0.2"
         },
         "pytest-cov": {
             "hashes": [
@@ -780,32 +794,30 @@
         },
         "typed-ast": {
             "hashes": [
-                "sha256:0948004fa228ae071054f5208840a1e88747a357ec1101c17217bfe99b299d58",
-                "sha256:10703d3cec8dcd9eef5a630a04056bbc898abc19bac5691612acba7d1325b66d",
-                "sha256:1f6c4bd0bdc0f14246fd41262df7dfc018d65bb05f6e16390b7ea26ca454a291",
-                "sha256:25d8feefe27eb0303b73545416b13d108c6067b846b543738a25ff304824ed9a",
-                "sha256:29464a177d56e4e055b5f7b629935af7f49c196be47528cc94e0a7bf83fbc2b9",
-                "sha256:2e214b72168ea0275efd6c884b114ab42e316de3ffa125b267e732ed2abda892",
-                "sha256:3e0d5e48e3a23e9a4d1a9f698e32a542a4a288c871d33ed8df1b092a40f3a0f9",
-                "sha256:519425deca5c2b2bdac49f77b2c5625781abbaf9a809d727d3a5596b30bb4ded",
-                "sha256:57fe287f0cdd9ceaf69e7b71a2e94a24b5d268b35df251a88fef5cc241bf73aa",
-                "sha256:668d0cec391d9aed1c6a388b0d5b97cd22e6073eaa5fbaa6d2946603b4871efe",
-                "sha256:68ba70684990f59497680ff90d18e756a47bf4863c604098f10de9716b2c0bdd",
-                "sha256:6de012d2b166fe7a4cdf505eee3aaa12192f7ba365beeefaca4ec10e31241a85",
-                "sha256:79b91ebe5a28d349b6d0d323023350133e927b4de5b651a8aa2db69c761420c6",
-                "sha256:8550177fa5d4c1f09b5e5f524411c44633c80ec69b24e0e98906dd761941ca46",
-                "sha256:898f818399cafcdb93cbbe15fc83a33d05f18e29fb498ddc09b0214cdfc7cd51",
-                "sha256:94b091dc0f19291adcb279a108f5d38de2430411068b219f41b343c03b28fb1f",
-                "sha256:a26863198902cda15ab4503991e8cf1ca874219e0118cbf07c126bce7c4db129",
-                "sha256:a8034021801bc0440f2e027c354b4eafd95891b573e12ff0418dec385c76785c",
-                "sha256:bc978ac17468fe868ee589c795d06777f75496b1ed576d308002c8a5756fb9ea",
-                "sha256:c05b41bc1deade9f90ddc5d988fe506208019ebba9f2578c622516fd201f5863",
-                "sha256:c9b060bd1e5a26ab6e8267fd46fc9e02b54eb15fffb16d112d4c7b1c12987559",
-                "sha256:edb04bdd45bfd76c8292c4d9654568efaedf76fe78eb246dde69bdb13b2dad87",
-                "sha256:f19f2a4f547505fe9072e15f6f4ae714af51b5a681a97f187971f50c283193b6"
+                "sha256:0555eca1671ebe09eb5f2176723826f6f44cca5060502fea259de9b0e893ab53",
+                "sha256:0ca96128ea66163aea13911c9b4b661cb345eb729a20be15c034271360fc7474",
+                "sha256:16ccd06d614cf81b96de42a37679af12526ea25a208bce3da2d9226f44563868",
+                "sha256:1e21ae7b49a3f744958ffad1737dfbdb43e1137503ccc59f4e32c4ac33b0bd1c",
+                "sha256:37670c6fd857b5eb68aa5d193e14098354783b5138de482afa401cc2644f5a7f",
+                "sha256:46d84c8e3806619ece595aaf4f37743083f9454c9ea68a517f1daa05126daf1d",
+                "sha256:5b972bbb3819ece283a67358103cc6671da3646397b06e7acea558444daf54b2",
+                "sha256:6306ffa64922a7b58ee2e8d6f207813460ca5a90213b4a400c2e730375049246",
+                "sha256:6cb25dc95078931ecbd6cbcc4178d1b8ae8f2b513ae9c3bd0b7f81c2191db4c6",
+                "sha256:7e19d439fee23620dea6468d85bfe529b873dace39b7e5b0c82c7099681f8a22",
+                "sha256:7f5cd83af6b3ca9757e1127d852f497d11c7b09b4716c355acfbebf783d028da",
+                "sha256:81e885a713e06faeef37223a5b1167615db87f947ecc73f815b9d1bbd6b585be",
+                "sha256:94af325c9fe354019a29f9016277c547ad5d8a2d98a02806f27a7436b2da6735",
+                "sha256:b1e5445c6075f509d5764b84ce641a1535748801253b97f3b7ea9d948a22853a",
+                "sha256:cb061a959fec9a514d243831c514b51ccb940b58a5ce572a4e209810f2507dcf",
+                "sha256:cc8d0b703d573cbabe0d51c9d68ab68df42a81409e4ed6af45a04a95484b96a5",
+                "sha256:da0afa955865920edb146926455ec49da20965389982f91e926389666f5cf86a",
+                "sha256:dc76738331d61818ce0b90647aedde17bbba3d3f9e969d83c1d9087b4f978862",
+                "sha256:e7ec9a1445d27dbd0446568035f7106fa899a36f55e52ade28020f7b3845180d",
+                "sha256:f741ba03feb480061ab91a465d1a3ed2d40b52822ada5b4017770dfcb88f839f",
+                "sha256:fe800a58547dd424cd286b7270b967b5b3316b993d86453ede184a17b5a6b17d"
             ],
             "markers": "python_version < '3.7' and implementation_name == 'cpython'",
-            "version": "==1.1.0"
+            "version": "==1.1.1"
         },
         "urllib3": {
             "hashes": [
diff --git a/tests/test_tutorial/test_header_params/__init__.py b/tests/test_tutorial/test_header_params/__init__.py
new file mode 100644
index 000000000..e69de29bb
diff --git a/tests/test_tutorial/test_header_params/test_tutorial001.py b/tests/test_tutorial/test_header_params/test_tutorial001.py
new file mode 100644
index 000000000..4bb615117
--- /dev/null
+++ b/tests/test_tutorial/test_header_params/test_tutorial001.py
@@ -0,0 +1,92 @@
+import sys
+
+import pytest
+from starlette.testclient import TestClient
+
+from header_params.tutorial001 import app
+
+client = TestClient(app)
+
+
+print(sys.path)
+
+openapi_schema = {
+    "openapi": "3.0.2",
+    "info": {"title": "Fast API", "version": "0.1.0"},
+    "paths": {
+        "/items/": {
+            "get": {
+                "responses": {
+                    "200": {
+                        "description": "Successful Response",
+                        "content": {"application/json": {"schema": {}}},
+                    },
+                    "422": {
+                        "description": "Validation Error",
+                        "content": {
+                            "application/json": {
+                                "schema": {
+                                    "$ref": "#/components/schemas/HTTPValidationError"
+                                }
+                            }
+                        },
+                    },
+                },
+                "summary": "Read Items Get",
+                "operationId": "read_items_items__get",
+                "parameters": [
+                    {
+                        "required": False,
+                        "schema": {"title": "User-Agent", "type": "string"},
+                        "name": "user-agent",
+                        "in": "header",
+                    }
+                ],
+            }
+        }
+    },
+    "components": {
+        "schemas": {
+            "ValidationError": {
+                "title": "ValidationError",
+                "required": ["loc", "msg", "type"],
+                "type": "object",
+                "properties": {
+                    "loc": {
+                        "title": "Location",
+                        "type": "array",
+                        "items": {"type": "string"},
+                    },
+                    "msg": {"title": "Message", "type": "string"},
+                    "type": {"title": "Error Type", "type": "string"},
+                },
+            },
+            "HTTPValidationError": {
+                "title": "HTTPValidationError",
+                "type": "object",
+                "properties": {
+                    "detail": {
+                        "title": "Detail",
+                        "type": "array",
+                        "items": {"$ref": "#/components/schemas/ValidationError"},
+                    }
+                },
+            },
+        }
+    },
+}
+
+
+@pytest.mark.parametrize(
+    "path,headers,expected_status,expected_response",
+    [
+        ("/openapi.json", None, 200, openapi_schema),
+        ("/items", None, 200, {"User-Agent": "testclient"}),
+        ("/items", {"X-Header": "notvalid"}, 200, {"User-Agent": "testclient"}),
+        ("/items", {"User-Agent": "FastAPI test"}, 200, {"User-Agent": "FastAPI test"}),
+    ],
+)
+def test(path, headers, expected_status, expected_response):
+    response = client.get(path, headers=headers)
+    assert response.status_code == expected_status
+    assert response.json() == expected_response