fail("Expected PluginException");
        } catch (PluginException e) {
            assertTrue(e.getMessage().contains("Failed to access"));
        }
    }

    @Test
    public void test_getInstalledArtifacts_unknown() {
        Artifact[] artifacts = pluginHelper.getInstalledArtifacts(ArtifactType.UNKNOWN);
        assertNotNull(artifacts);
    }

    @Test
    public void test_getInstalledArtifacts_dataStore() {