Ignore init setup etc from codecov

drizzle/resample.py

@@ -233,9 +233,14 @@ def __init__(self, kernel="square", fillval=None, out_shape=None,
             ``out_ctx`` is provided.
 
         """
+        if begin_ctx_id < 0:
+            ValueError("Invalid context image ID")
+
         self._ctx_id = begin_ctx_id  # the ID of the *last* image to be resampled
         if max_ctx_id is None:
             max_ctx_id = begin_ctx_id
+        elif max_ctx_id < begin_ctx_id:
+            raise ValueError("'max_ctx_id' cannot be smaller than 'begin_ctx_id'.")
         self._max_ctx_id = max_ctx_id
 
         if exptime < 0.0:
@@ -305,7 +310,7 @@ def __init__(self, kernel="square", fillval=None, out_shape=None,
             shapes.add(out_ctx.shape[1:])
 
         if out_shape is not None:
-            shapes.add(out_shape)
+            shapes.add(tuple(out_shape))
 
         if len(shapes) == 1:
             self._out_shape = shapes.pop()
@@ -406,9 +411,6 @@ def _increment_ctx_id(self):
         plane and increments context image ID
         (after computing the return value).
         """
-        if self._ctx_id < 0:
-            ValueError("Invalid context image ID")
-
         self._plane_no = self._ctx_id // CTX_PLANE_BITS
         depth = self._out_ctx.shape[0]
 

drizzle/tests/test_resample.py

@@ -871,7 +871,7 @@ def test_blot_with_lan5(tmpdir):
 
 def test_context_planes():
     """Reproduce error seen in issue #50"""
-    shape = [10, 10]
+    shape = (10, 10)
     output_wcs = wcs.WCS()
     output_wcs.wcs.ctype = ['RA---TAN', 'DEC--TAN']
     output_wcs.wcs.pc = [[1, 0], [0, 1]]
@@ -898,6 +898,30 @@ def test_context_planes():
         "'out_ctx' must be either a 2D or 3D array."
     )
 
+    # starting context ID must be positive
+    with pytest.raises(ValueError) as err_info:
+        resample.Drizzle(
+            kernel='square',
+            exptime=0.0,
+            out_shape=shape,
+            begin_ctx_id=-1,
+        )
+    assert str(err_info.value).startswith(
+        "Invalid context image ID"
+    )
+
+    with pytest.raises(ValueError) as err_info:
+        resample.Drizzle(
+            kernel='square',
+            exptime=0.0,
+            out_shape=shape,
+            begin_ctx_id=1,
+            max_ctx_id=0,
+        )
+    assert str(err_info.value).startswith(
+        "'max_ctx_id' cannot be smaller than 'begin_ctx_id'."
+    )
+
     driz = resample.Drizzle(
         kernel='square',
         out_shape=output_wcs.array_shape,