test/py: fs: add fstest/unlink test

In this commit, test cases for unlink interfaces are added as part of
"test_fs" test suite.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>

test/py/tests/test_fs/test_unlink.py

@@ -0,0 +1,109 @@
+# SPDX-License-Identifier:      GPL-2.0+
+# Copyright (c) 2018, Linaro Limited
+# Author: Takahiro Akashi <takahiro.akashi@linaro.org>
+#
+# U-Boot File System:unlink Test
+
+"""
+This test verifies unlink operation (deleting a file or a directory)
+on file system.
+"""
+
+import pytest
+
+@pytest.mark.boardspec('sandbox')
+class TestUnlink(object):
+    def test_unlink1(self, u_boot_console, fs_obj_unlink):
+        """
+        Test Case 1 - delete a file
+        """
+        fs_type,fs_img = fs_obj_unlink
+        with u_boot_console.log.section('Test Case 1 - unlink (file)'):
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % fs_img,
+                '%srm host 0:0 dir1/file1' % fs_type,
+                '%sls host 0:0 dir1/file1' % fs_type])
+            assert('' == ''.join(output))
+
+            output = u_boot_console.run_command(
+                '%sls host 0:0 dir1/' % fs_type)
+            assert(not 'file1' in output)
+            assert('file2' in output)
+
+    def test_unlink2(self, u_boot_console, fs_obj_unlink):
+        """
+        Test Case 2 - delete many files
+        """
+        fs_type,fs_img = fs_obj_unlink
+        with u_boot_console.log.section('Test Case 2 - unlink (many)'):
+            output = u_boot_console.run_command('host bind 0 %s' % fs_img)
+
+            for i in range(0, 20):
+                output = u_boot_console.run_command_list([
+                    '%srm host 0:0 dir2/0123456789abcdef%02x' % (fs_type, i),
+                    '%sls host 0:0 dir2/0123456789abcdef%02x' % (fs_type, i)])
+                assert('' == ''.join(output))
+
+            output = u_boot_console.run_command(
+                '%sls host 0:0 dir2' % fs_type)
+            assert('0 file(s), 2 dir(s)' in output)
+
+    def test_unlink3(self, u_boot_console, fs_obj_unlink):
+        """
+        Test Case 3 - trying to delete a non-existing file should fail
+        """
+        fs_type,fs_img = fs_obj_unlink
+        with u_boot_console.log.section('Test Case 3 - unlink (non-existing)'):
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % fs_img,
+                '%srm host 0:0 dir1/nofile' % fs_type])
+            assert('nofile: doesn\'t exist' in ''.join(output))
+
+    def test_unlink4(self, u_boot_console, fs_obj_unlink):
+        """
+        Test Case 4 - delete an empty directory
+        """
+        fs_type,fs_img = fs_obj_unlink
+        with u_boot_console.log.section('Test Case 4 - unlink (directory)'):
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % fs_img,
+                '%srm host 0:0 dir4' % fs_type])
+            assert('' == ''.join(output))
+
+        output = u_boot_console.run_command(
+            '%sls host 0:0 /' % fs_type)
+        assert(not 'dir4' in output)
+
+    def test_unlink5(self, u_boot_console, fs_obj_unlink):
+        """
+        Test Case 5 - trying to deleting a non-empty directory ".."
+        should fail
+        """
+        fs_type,fs_img = fs_obj_unlink
+        with u_boot_console.log.section('Test Case 5 - unlink ("non-empty directory")'):
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % fs_img,
+                '%srm host 0:0 dir5' % fs_type])
+            assert('directory is not empty' in ''.join(output))
+
+    def test_unlink6(self, u_boot_console, fs_obj_unlink):
+        """
+        Test Case 6 - trying to deleting a "." should fail
+        """
+        fs_type,fs_img = fs_obj_unlink
+        with u_boot_console.log.section('Test Case 6 - unlink (".")'):
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % fs_img,
+                '%srm host 0:0 dir5/.' % fs_type])
+            assert('directory is not empty' in ''.join(output))
+
+    def test_unlink7(self, u_boot_console, fs_obj_unlink):
+        """
+        Test Case 7 - trying to deleting a ".." should fail
+        """
+        fs_type,fs_img = fs_obj_unlink
+        with u_boot_console.log.section('Test Case 7 - unlink ("..")'):
+            output = u_boot_console.run_command_list([
+                'host bind 0 %s' % fs_img,
+                '%srm host 0:0 dir5/..' % fs_type])
+            assert('directory is not empty' in ''.join(output))