From e431a3f1853d4c0d3f5e0d85cb3e5923c86c965a Mon Sep 17 00:00:00 2001
From: Rob Emanuele <rdemanuele@gmail.com>
Date: Mon, 1 Nov 2021 20:49:06 -0400
Subject: [PATCH] Test item extra_links with relative href

---
 stac_fastapi/pgstac/tests/data/test_item.json |  5 ++++
 .../pgstac/tests/resources/test_item.py       | 26 ++++++++++++++++++-
 2 files changed, 30 insertions(+), 1 deletion(-)

diff --git a/stac_fastapi/pgstac/tests/data/test_item.json b/stac_fastapi/pgstac/tests/data/test_item.json
index 2b7fdd860..a6e85a00d 100644
--- a/stac_fastapi/pgstac/tests/data/test_item.json
+++ b/stac_fastapi/pgstac/tests/data/test_item.json
@@ -500,6 +500,11 @@
       "href": "http://localhost:8081/",
       "rel": "root",
       "type": "application/json"
+    },
+    {
+      "href": "preview.html",
+      "rel": "preview",
+      "type": "application/html"
     }
   ]
 }
\ No newline at end of file
diff --git a/stac_fastapi/pgstac/tests/resources/test_item.py b/stac_fastapi/pgstac/tests/resources/test_item.py
index 5fa747699..d74bb1f04 100644
--- a/stac_fastapi/pgstac/tests/resources/test_item.py
+++ b/stac_fastapi/pgstac/tests/resources/test_item.py
@@ -2,10 +2,11 @@
 import uuid
 from datetime import datetime, timedelta
 from typing import Callable
-from urllib.parse import parse_qs, urlparse
+from urllib.parse import parse_qs, urljoin, urlparse
 
 import pystac
 import pytest
+from httpx import AsyncClient
 from shapely.geometry import Polygon
 from stac_pydantic import Collection, Item
 from stac_pydantic.shared import DATETIME_RFC339
@@ -1005,3 +1006,26 @@ async def test_search_bbox_errors(app_client):
     params = {"bbox": "100.0,0.0,0.0,105.0"}
     resp = await app_client.get("/search", params=params)
     assert resp.status_code == 400
+
+
+@pytest.mark.asyncio
+async def test_preserves_extra_link(
+    app_client: AsyncClient, load_test_data, load_test_collection
+):
+    coll = load_test_collection
+    test_item = load_test_data("test_item.json")
+    expected_href = urljoin(str(app_client.base_url), "preview.html")
+
+    resp = await app_client.post(f"/collections/{coll['id']}/items", json=test_item)
+    assert resp.status_code == 200
+
+    response_item = await app_client.get(
+        f"/collections/{coll['id']}/items/{test_item['id']}",
+        params={"limit": 1},
+    )
+    assert response_item.status_code == 200
+    item = response_item.json()
+
+    extra_link = [link for link in item["links"] if link["rel"] == "preview"]
+    assert extra_link
+    assert extra_link[0]["href"] == expected_href