[gnome-autoar/wip/oholy/extractor-readonly-folders] tests: Add test for extraction of files from readonly dir

[Ondrej Holy <oholy src gnome org>]

commit 85a1a906811878c233eb6bef0be580468214344e
Author: Ondrej Holy <oholy redhat com>
Date:   Fri Apr 23 10:47:24 2021 +0200

    tests: Add test for extraction of files from readonly dir
    
    The extraction of children from a readonly directory should not fail.
    Let's add a test to verify this.

 .../test-readonly-directory/input/arextract.tar    | Bin 0 -> 10240 bytes
 .../reference/arextract/arextract.txt              |   0
 tests/test-extract-unit.c                          |  47 +++++++++++++++++++++
 3 files changed, 47 insertions(+)
---
diff --git a/tests/files/extract/test-readonly-directory/input/arextract.tar 
b/tests/files/extract/test-readonly-directory/input/arextract.tar
new file mode 100644
index 0000000..e2dddbb
Binary files /dev/null and b/tests/files/extract/test-readonly-directory/input/arextract.tar differ
diff --git a/tests/files/extract/test-readonly-directory/reference/arextract/arextract.txt 
b/tests/files/extract/test-readonly-directory/reference/arextract/arextract.txt
new file mode 100644
index 0000000..e69de29
diff --git a/tests/test-extract-unit.c b/tests/test-extract-unit.c
index 14fb014..4ab2fea 100644
--- a/tests/test-extract-unit.c
+++ b/tests/test-extract-unit.c
@@ -1286,6 +1286,50 @@ test_sanitize_absolute_path (void)
   assert_reference_and_output_match (extract_test);
 }
 
+/* Be sure that extraction of children from a readonly directory doesn't fail. */
+static void
+test_readonly_directory (void)
+{
+  /* arextract.tar
+   * └── arextract
+   *     └── arextract.txt
+   *
+   * 1 directories, 1 files
+   *
+   *
+   * ref
+   * └── arextract
+   *     └── arextract.txt
+   *
+   * 1 directories, 1 files
+   */
+
+  g_autoptr (ExtractTest) extract_test = NULL;
+  g_autoptr (ExtractTestData) data = NULL;
+  g_autoptr (GFile) archive = NULL;
+  g_autoptr (AutoarExtractor) extractor = NULL;
+
+  extract_test = extract_test_new ("test-readonly-directory");
+
+  if (!extract_test) {
+    g_assert_nonnull (extract_test);
+    return;
+  }
+
+  archive = g_file_get_child (extract_test->input, "arextract.tar");
+
+  extractor = autoar_extractor_new (archive, extract_test->output);
+
+  data = extract_test_data_new_for_extract (extractor);
+
+  autoar_extractor_start (extractor, data->cancellable);
+
+  g_assert_cmpuint (data->number_of_files, ==, 2);
+  g_assert_no_error (data->error);
+  g_assert_true (data->completed_signalled);
+  assert_reference_and_output_match (extract_test);
+}
+
 static void
 setup_test_suite (void)
 {
@@ -1324,6 +1368,9 @@ setup_test_suite (void)
                    test_sanitize_dotdot_parent);
   g_test_add_func ("/autoar-extract/test-sanitize-absolute-path",
                    test_sanitize_absolute_path);
+
+  g_test_add_func ("/autoar-extract/test-readonly-directory",
+                   test_readonly_directory);
 }
 
 int