Add more integration tests (#615)

Translate the following tests from `cloud_tests` to the new integration test framework:

* test_runcmd.py
* seed_random_data.py
* set_hostname.py
* set_hostname_fqdn.py
* snap.py
* ssh_auth_key_fingerprints_disable.py
* ssh_auth_key_fingerprints_enable.py
* ssh_import_id.py
* ssh_keys_generate.py
* ssh_keys_provided.py
* timezone.py
* write_files.py

1 files changed, 65 insertions, 0 deletions

diff --git a/tests/integration_tests/modules/test_write_files.py b/tests/integration_tests/modules/test_write_files.py
new file mode 100644
index 00000000..d7032a0c
--- /dev/null
+++ b/tests/integration_tests/modules/test_write_files.py
@@ -0,0 +1,65 @@
+"""Integration test for the write_files module.
+
+This test specifies files to be created by the ``write_files`` module
+and then checks if those files were created during boot.
+
+(This is ported from
+``tests/cloud_tests/testcases/modules/write_files.yaml``.)"""
+
+import base64
+import pytest
+
+
+ASCII_TEXT = "ASCII text"
+B64_CONTENT = base64.b64encode(ASCII_TEXT.encode("utf-8"))
+
+# NOTE: the binary data can be any binary data, not only executables
+#       and can be generated via the base 64 command as such:
+#           $ base64 < hello > hello.txt
+#       the opposite is running:
+#           $ base64 -d < hello.txt > hello
+#
+USER_DATA = """\
+#cloud-config
+write_files:
+-   encoding: b64
+    content: {}
+    owner: root:root
+    path: /root/file_b64
+    permissions: '0644'
+-   content: |
+        # My new /root/file_text
+
+        SMBDOPTIONS="-D"
+    path: /root/file_text
+-   content: !!binary |
+        /Z/xrHR4WINT0UNoKPQKbuovp6+Js+JK
+    path: /root/file_binary
+    permissions: '0555'
+-   encoding: gzip
+    content: !!binary |
+        H4sIAIDb/U8C/1NW1E/KzNMvzuBKTc7IV8hIzcnJVyjPL8pJ4QIA6N+MVxsAAAA=
+    path: /root/file_gzip
+    permissions: '0755'
+""".format(B64_CONTENT.decode("ascii"))
+
+
+@pytest.mark.user_data(USER_DATA)
+class TestWriteFiles:
+
+    @pytest.mark.parametrize(
+        "cmd,expected_out", (
+            ("file /root/file_b64", ASCII_TEXT),
+            ("md5sum </root/file_binary", "3801184b97bb8c6e63fa0e1eae2920d7"),
+            ("sha256sum </root/file_binary", (
+                "2c791c4037ea5bd7e928d6a87380f8ba"
+                "7a803cd83d5e4f269e28f5090f0f2c9a"
+            )),
+            ("file /root/file_gzip",
+             "POSIX shell script, ASCII text executable"),
+            ("file /root/file_text", ASCII_TEXT),
+        )
+    )
+    def test_write_files(self, cmd, expected_out, class_client):
+        out = class_client.execute(cmd)
+        assert expected_out in out