test: use mfnwt in test_gwf_sto01.py, accommodate no dbl prec exes

autotest/conftest.py

@@ -53,12 +53,18 @@ def targets(bin_path) -> Executables:
     rb_bin = bin_path / "rebuilt"
     tgts = dict()
 
+    def try_dbl(name):
+        p = dl_bin / f"{name}dbl{exe_ext}"
+        if not p.is_file():
+            p = dl_bin / f"{name}{exe_ext}"
+        return p
+
     # downloaded executables
     tgts["mf2000"] = dl_bin / f"mf2000{exe_ext}"
-    tgts["mf2005"] = dl_bin / f"mf2005dbl{exe_ext}"
-    tgts["mfnwt"] = dl_bin / f"mfnwtdbl{exe_ext}"
-    tgts["mfusg"] = dl_bin / f"mfusgdbl{exe_ext}"
-    tgts["mflgr"] = dl_bin / f"mflgrdbl{exe_ext}"
+    tgts["mf2005"] = try_dbl("mf2005")
+    tgts["mfnwt"] = try_dbl("mfnwt")
+    tgts["mfusg"] = try_dbl("mfdbl")
+    tgts["mflgr"] = try_dbl("mflgr")
     tgts["mf2005s"] = dl_bin / f"mf2005{exe_ext}"
     tgts["mt3dms"] = dl_bin / f"mt3dms{exe_ext}"
     tgts["crt"] = dl_bin / f"crt{exe_ext}"
@@ -93,7 +99,7 @@ def original_regression(request) -> bool:
 
 @pytest.fixture(scope="session")
 def markers(pytestconfig) -> str:
-    return pytestconfig.getoption('-m')
+    return pytestconfig.getoption("-m")
 
 
 def pytest_addoption(parser):
@@ -104,10 +110,10 @@ def pytest_addoption(parser):
         help="TODO",
     )
     parser.addoption(
-        "--parallel", 
-        action="store_true", 
-        default=False, 
-        help="include parallel test cases"
+        "--parallel",
+        action="store_true",
+        default=False,
+        help="include parallel test cases",
     )
 
 

autotest/test_gwf_sto01.py

@@ -94,6 +94,7 @@
 # storage and compaction data
 ske = [6e-4, 3e-4, 6e-4]
 
+
 # variant SUB package problem 3
 def build_model(idx, dir):
     name = ex[idx]
@@ -201,7 +202,9 @@ def build_model(idx, dir):
     # build MODFLOW-NWT files
     cpth = cmppth
     ws = os.path.join(dir, cpth)
-    mc = flopy.modflow.Modflow(name, model_ws=ws, version=cpth)
+    mc = flopy.modflow.Modflow(
+        name, model_ws=ws, version=cpth, exe_name=cmppth
+    )
     dis = flopy.modflow.ModflowDis(
         mc,
         nlay=nlay,
@@ -256,7 +259,6 @@ def build_model(idx, dir):
 
 
 def eval_sto(sim):
-
     print("evaluating storage...")
 
     # get results from listing file