[nautilus] test: Add dir_has_files unit test

[Carlos Soriano <csoriano src gnome org>]

commit bfc3aebe049ce395d58465a40e08e46f449cdf3a
Author: Alexandru Fazakas <alex fazakas97 gmail com>
Date:   Tue May 15 15:56:14 2018 +0300

    test: Add dir_has_files unit test
    
    In this patch we added an unit test with 3 simple tests for the
    dir_has_files.
    
    https://gitlab.gnome.org/GNOME/nautilus/issues/224

 test/automated/displayless/meson.build             |  3 +
 .../test-file-operations-dir-has-files.c           | 84 ++++++++++++++++++++++
 2 files changed, 87 insertions(+)
---
diff --git a/test/automated/displayless/meson.build b/test/automated/displayless/meson.build
index 0c3a3e13d..08b06de10 100644
--- a/test/automated/displayless/meson.build
+++ b/test/automated/displayless/meson.build
@@ -7,6 +7,9 @@ tests = [
   ]],
   ['test-file-utilities', [
     'test-file-utilities.c'
+  ]],
+  ['test-file-operations-dir-has-files', [
+    'test-file-operations-dir-has-files.c'
   ]]
 ]
 
diff --git a/test/automated/displayless/test-file-operations-dir-has-files.c 
b/test/automated/displayless/test-file-operations-dir-has-files.c
new file mode 100644
index 000000000..75c21e2c4
--- /dev/null
+++ b/test/automated/displayless/test-file-operations-dir-has-files.c
@@ -0,0 +1,84 @@
+#include <glib.h>
+#include <glib/gprintf.h>
+#include "src/nautilus-directory.h"
+#include "src/nautilus-file-utilities.h"
+#include "src/nautilus-search-directory.h"
+#include "src/nautilus-directory.h"
+#include "src/nautilus-file-operations.c"
+#include <unistd.h>
+#include "eel/eel-string.h"
+
+#define ROOT_DIR "file:///tmp"
+
+/* Tests the function for a simple file */
+static void
+test_simple_file (void)
+{
+    g_autoptr (GFile) root = NULL;
+    g_autoptr (GFile) file = NULL;
+
+    root = g_file_new_for_path (g_get_tmp_dir ());
+    file = g_file_get_child (root, "simple_file");
+    g_file_create (file, G_FILE_CREATE_NONE, NULL, NULL);
+    g_assert_false (dir_has_files (file));
+}
+
+/* Tests the function for an empty directory */
+static void
+test_empty_directory (void)
+{
+    g_autoptr (GFile) root = NULL;
+    g_autoptr (GFile) child = NULL;
+
+    root = g_file_new_for_path (g_get_tmp_dir ());
+    child = g_file_get_child (root, "empty_dir");
+
+    g_assert_true (child != NULL);
+
+    g_file_make_directory (child, NULL, NULL);
+
+    g_assert_false (dir_has_files (child));
+}
+
+/* Tests the function for a directory containing one directory */
+static void
+test_directory_one_file (void)
+{
+    g_autoptr (GFile) root = NULL;
+    g_autoptr (GFile) parent_dir = NULL;
+    g_autoptr (GFile) child_file = NULL;
+
+    root = g_file_new_for_path (g_get_tmp_dir ());
+    parent_dir = g_file_get_child (root, "parent_dir");
+    g_assert_true (parent_dir != NULL);
+    g_file_make_directory (parent_dir, NULL, NULL);
+
+    child_file = g_file_get_child (parent_dir, "child_file");
+    g_assert_true (child_file != NULL);
+    g_file_make_directory (child_file, NULL, NULL);
+
+    g_assert_true (dir_has_files (parent_dir));
+}
+
+static void
+setup_test_suite (void)
+{
+    g_test_add_func ("/dir-has-files-simple-file/1.0",
+                     test_simple_file);
+    g_test_add_func ("/dir-has-files-empty-dir/1.0",
+                     test_empty_directory);
+    g_test_add_func ("/dir-has-files-directroy-one-file/1.0",
+                     test_directory_one_file);
+}
+
+int
+main (int argc, char *argv[])
+{
+    g_test_init (&argc, &argv, NULL);
+    g_test_set_nonfatal_assertions ();
+    nautilus_ensure_extension_points();
+
+    setup_test_suite ();
+
+    return g_test_run ();
+}