explicitly test the environments installed before and after remove

tests/test_mpsd_software.py

@@ -759,9 +759,9 @@ def test_remove_package_sets(tmp_path, simple_toolchain):
     release_dir = tmp_path / release_to_test / mod.get_native_microarchitecture()
     assert len(list(release_dir.iterdir())) == 2  # spack and lmod
     # check that the two toolchains are installed
-    assert (
-        len(list((release_dir / "spack" / "var" / "spack" / "environments").iterdir()))
-        == 2
+    environments_dir = release_dir / "spack" / "var" / "spack" / "environments"
+    set([environment.name for environment in environments_dir.iterdir()]) == set(
+        ["toolchain1", "toolchain2"]
     )
     # check that the two toolchains have the "handmade" module files
     toolchains_list = list(mod.environment_status(release_to_test, tmp_path).values())[
@@ -781,11 +781,11 @@ def test_remove_package_sets(tmp_path, simple_toolchain):
         package_sets=["toolchain2"],
         force_remove=True,
     )
-    # now check that only toolchain1 is installed
-    assert (
-        len(list((release_dir / "spack" / "var" / "spack" / "environments").iterdir()))
-        == 1
+    # now check that only "toolchain1" is installed in environments_dir
+    assert set([environment.name for environment in environments_dir.iterdir()]) == set(
+        ["toolchain1"]
     )
+
     # check that the only one toolchains has the "handmade" module files
     toolchains_list = list(mod.environment_status(release_to_test, tmp_path).values())[
         0