Fix shared libraries closure test

Some tests are executed on the current interpreter, but with a
static list of ignored shared libraries. This list is very
host-specific, and fail on nightly GAIA tests.

The list of ignored shared libraries is now incomplete, an error should
be raised. The test now makes sure that none of the shared libraries
reported as errors belong to the list of ignored libraries.

Closes #16

tests/tests_e3/anod/spec_test.py

@@ -40,15 +40,12 @@
         (
             None,
             [
-                "libc.so.6",
-                "libstdc++.so.6",
                 "libstdc++.so.6",
                 "libgcc_s.so.1",
                 "libpthread.so.0",
                 "libdl.so.2",
                 "libm.so.6",
                 # Windows ignored Dlls.
-                "ADVAPI32.dll",
                 "CRYPTBASE.DLL",
                 "Comctl32.dll",
                 "FreeImage.dll",
@@ -195,9 +192,34 @@ def test_spec_check_dll_closure(ldd, arguments: tuple, expected: tuple) -> None:
         lib_path: Path = Path(
             exe_path.parent.parent, "lib" if sys.platform != "win32" else ""
         )
-        test_spec.check_shared_libraries_closure(
-            prefix=str(lib_path), ignored_libs=ignored, ldd_output=None
-        )
+        try:
+            test_spec.check_shared_libraries_closure(
+                prefix=str(lib_path), ignored_libs=ignored, ldd_output=None
+            )
+        except AnodError as ae:
+            # As the list of shared libraries used by the interpreter varies
+            # from a host to another, we may catch exceptions. In that case,
+            # just make sure the libraries listed in the ignored list do not
+            # appear in the error message.
+            if len(ae.messages) > 0:
+                error_messages: list[str] = ae.messages[0].splitlines()
+                culprit_dlls: list[str] = []
+                dll_name: str
+                for msg in error_messages:
+                    if msg.strip().startswith("- "):
+                        dll_name = msg.strip()[2:].split(":")[0].strip()
+                        if dll_name not in culprit_dlls:
+                            culprit_dlls.append(dll_name)
+                # Check that none of the dlls listed in the error message
+                # actually belongs to the ignored dlls.
+                for culprit_dll in culprit_dlls:
+                    if culprit_dll in ignored:
+                        raise Exception(
+                            f"Shared library {culprit_dll} is listed in the "
+                            "dll closure errors, while it should be ignored"
+                        ) from ae
+            else:
+                raise ae
     elif errors:
         with pytest.raises(AnodError) as ae:
             test_spec.check_shared_libraries_closure(