From 6854aa42c75b85d3c4628e6a43973538dd33bed9 Mon Sep 17 00:00:00 2001
From: Ryan McCarthy <rcm@planet.com>
Date: Thu, 8 Feb 2024 10:09:36 -0700
Subject: [PATCH] modifying check to resemble docstring, adding is_quadtree
 check to tests

---
 morecantile/models.py | 2 +-
 tests/test_models.py  | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/morecantile/models.py b/morecantile/models.py
index a719a6a..1188958 100644
--- a/morecantile/models.py
+++ b/morecantile/models.py
@@ -716,7 +716,7 @@ def custom(
             transform = pyproj.Transformer.from_crs(extent_crs, crs, always_xy=True)
             extent = transform.transform_bounds(*extent, densify_pts=21)
 
-        if decimation_base < 2:
+        if decimation_base <= 1:
             raise ValueError(
                 "Custom TileMatrixSet requires a decimation base that is greater than 1."
             )
diff --git a/tests/test_models.py b/tests/test_models.py
index 3216253..28fc34b 100644
--- a/tests/test_models.py
+++ b/tests/test_models.py
@@ -195,6 +195,12 @@ def test_custom_tms_decimation():
             pyproj.CRS.from_epsg(6342),
             decimation_base=decimation_base,
         )
+
+        if decimation_base == 2:
+            assert custom_tms.is_quadtree
+        else:
+            assert not custom_tms.is_quadtree
+
         for zoom in [0, 1, 2, 3]:
             tile_width = (right - left) / decimation_base**zoom
             tile_height = (top - bottom) / decimation_base**zoom