test intervals colormap

src/titiler/core/tests/test_dependencies.py

@@ -63,6 +63,18 @@ def main(cm=Depends(dependencies.ColorMapParams)):
     response = client.get(f"/?colormap={cmap}")
     assert response.json()["1"] == [68, 1, 84, 255]
 
+    intervals = [
+        # ([min, max], [r, g, b, a])
+        ([1, 2], [0, 0, 0, 255]),
+        ([2, 3], [255, 255, 255, 255]),
+        ([3, 1000], [255, 0, 0, 255]),
+    ]
+    cmap = json.dumps(intervals)
+    response = client.get(f"/?colormap={cmap}")
+    assert response.json()[0] == [[1, 2], [0, 0, 0, 255]]
+    assert response.json()[1] == [[2, 3], [255, 255, 255, 255]]
+    assert response.json()[2] == [[3, 1000], [255, 0, 0, 255]]
+
 
 def test_default():
     """test default dep behavior."""

src/titiler/core/tests/test_factories.py

@@ -106,6 +106,7 @@ def test_TilerFactory():
     assert response.status_code == 200
     assert response.headers["content-type"] == "image/png"
 
+    # Dict
     cmap = urlencode(
         {
             "colormap": json.dumps(
@@ -122,6 +123,23 @@ def test_TilerFactory():
     assert response.status_code == 200
     assert response.headers["content-type"] == "image/png"
 
+    # Intervals
+    cmap = urlencode(
+        {
+            "colormap": json.dumps(
+                [
+                    # ([min, max], [r, g, b, a])
+                    ([1, 2], [0, 0, 0, 255]),
+                    ([2, 3], [255, 255, 255, 255]),
+                    ([3, 1000], [255, 0, 0, 255]),
+                ]
+            )
+        }
+    )
+    response = client.get(f"/tiles/8/84/47.png?url={DATA_DIR}/cog.tif&bidx=1&{cmap}")
+    assert response.status_code == 200
+    assert response.headers["content-type"] == "image/png"
+
     # Bad colormap format
     cmap = urlencode({"colormap": json.dumps({"1": [58, 102]})})
     response = client.get(f"/tiles/8/84/47.png?url={DATA_DIR}/cog.tif&bidx=1&{cmap}")