support/testing: add tree runtime test

Signed-off-by: Julien Olivain <ju.o@free.fr>

DEVELOPERS

@@ -2031,6 +2031,7 @@ F:	support/testing/tests/package/test_tesseract_ocr.py
 F:	support/testing/tests/package/test_thttpd.py
 F:	support/testing/tests/package/test_trace_cmd.py
 F:	support/testing/tests/package/test_trace_cmd/
+F:	support/testing/tests/package/test_tree.py
 F:	support/testing/tests/package/test_unbound.py
 F:	support/testing/tests/package/test_unbound/
 F:	support/testing/tests/package/test_usbip.py

support/testing/tests/package/test_tree.py

@@ -0,0 +1,54 @@
+import json
+import os
+import xml.etree.ElementTree as ET
+
+import infra.basetest
+
+
+class TestTree(infra.basetest.BRTest):
+    config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
+        """
+        BR2_PACKAGE_TREE=y
+        BR2_TARGET_ROOTFS_CPIO=y
+        # BR2_TARGET_ROOTFS_TAR is not set
+        """
+
+    def test_run(self):
+        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
+        self.emulator.boot(arch="armv5",
+                           kernel="builtin",
+                           options=["-initrd", cpio_file])
+        self.emulator.login()
+
+        self.assertRunOk("tree --version")
+
+        # Simple invocations on a path.
+        self.assertRunOk("tree /usr")
+        self.assertRunOk("tree -d /usr")
+        self.assertRunOk("tree -dx /")
+
+        # Check we see the /usr/bin/tree file in the output.
+        out, ret = self.emulator.run("tree -f /usr")
+        self.assertEqual(ret, 0)
+        self.assertIn("/usr/bin/tree", "\n".join(out))
+
+        # Check we can parse the JSON output and the summary report.
+        out, ret = self.emulator.run("tree -J /usr")
+        self.assertEqual(ret, 0)
+        json_str = "\n".join(out)
+        json_data = json.loads(json_str)
+        # Report is the last element.
+        json_report = json_data[-1]
+        self.assertEqual(json_report["type"], "report")
+        self.assertGreater(json_report["directories"], 0)
+        self.assertGreater(json_report["files"], 0)
+
+        # Check we can parse the XML output and the summary report.
+        out, ret = self.emulator.run("tree -X /usr")
+        self.assertEqual(ret, 0)
+        xml_str = "\n".join(out)
+        xml_root = ET.fromstring(xml_str)
+        self.assertEqual(xml_root.tag, "tree")
+        xml_report = xml_root.find("report")
+        self.assertGreater(int(xml_report.find("directories").text), 0)
+        self.assertGreater(int(xml_report.find("files").text), 0)