Add an end-to-end automated test that actually integrates with Borg.

NEWS

@@ -1,5 +1,6 @@
 1.2.7.dev0
  * Use Black code formatter and Flake8 code checker as part of running automated tests.
+ * Add an end-to-end automated test that actually integrates with Borg.
 
 1.2.6
  * Fix generated configuration to also include a "keep_daily" value so pruning works out of the

README.md

@@ -453,6 +453,19 @@ following:
 tox -e black
 ```
 
+### End-to-end tests
+
+borgmatic additionally includes some end-to-end tests that integration test
+with Borg for a few representative scenarios. These tests don't run by default
+because they're slow and require Docker. If you would like to run them, first
+install Docker, and make sure that it's executable by the current user. Then:
+
+```bash
+tox -e end-to-end
+```
+
+That builds a test container with your local borgmatic source, and runs
+end-to-end tests within it.
 
 ## Troubleshooting
 

tests/end-to-end/Dockerfile

@@ -0,0 +1,17 @@
+FROM b3vis/borgmatic
+
+# Starting from an existing borgmatic image, install the local source on top of
+# it so that we can test any local changes.
+RUN adduser -h /home -D app
+COPY test_requirements.txt /app/
+RUN pip3 install --upgrade --requirement /app/test_requirements.txt
+COPY . /app
+RUN rm -fr /app/.tox /app/.git \
+    && pip3 install --upgrade /app \
+    && chown -R app /app
+
+USER app
+WORKDIR /app
+ENV BORG_CACHE_DIR "/app/.cache/borg"
+
+CMD ["py.test"]

tests/end-to-end/test_borgmatic.py

@@ -0,0 +1,39 @@
+import json
+import os
+import subprocess
+import sys
+
+
+def generate_configuration():
+    subprocess.check_call('generate-borgmatic-config --destination test.yaml'.split(' '))
+    config = (
+        open('test.yaml')
+        .read()
+        .replace('user@backupserver:sourcehostname.borg', 'test.borg')
+        .replace('- /etc', '- /app')
+        .replace('- /var/log/syslog*', '')
+    )
+    config_file = open('test.yaml', 'w')
+    config_file.write(config)
+    config_file.close()
+
+
+def test_borgmatic_command():
+    # Create a Borg repository.
+    subprocess.check_call(
+        'borg init --encryption repokey test.borg'.split(' '),
+        env={'BORG_PASSPHRASE': '', **os.environ},
+    )
+
+    # Generate borgmatic configuration, and update the defaults so as to work for this test.
+    generate_configuration()
+
+    # Run borgmatic to generate a backup archive, and then list it to make sure it exists.
+    subprocess.check_call('borgmatic --config test.yaml'.split(' '))
+    output = subprocess.check_output(
+        'borgmatic --config test.yaml --list --json'.split(' '), encoding=sys.stdout.encoding
+    )
+    parsed_output = json.loads(output)
+
+    assert len(parsed_output) == 1
+    assert len(parsed_output[0]['archives']) == 1

tox.ini

@@ -1,20 +1,29 @@
 [tox]
-envlist=py3
-skipsdist=True
+envlist = py3
+skipsdist = True
 
 [testenv]
-usedevelop=True
-deps=-rtest_requirements.txt
+usedevelop = True
+deps = -rtest_requirements.txt
 commands =
-    py.test --cov-report term-missing:skip-covered --cov=borgmatic tests []
+    py.test --cov-report term-missing:skip-covered --cov=borgmatic --ignore=tests/end-to-end \
+        tests []
     black --skip-string-normalization --line-length 100 --check .
     flake8 .
 
 [testenv:black]
-basepython=python3.7
+basepython = python3.7
 commands =
     black --skip-string-normalization --line-length 100 .
 
+[testenv:end-to-end]
+whitelist_externals = docker
+skip_install = true
+deps =
+commands =
+    docker build --file tests/end-to-end/Dockerfile --tag borgmatic-test .
+    docker run --rm borgmatic-test py.test tests/end-to-end []
+
 [flake8]
-ignore=E501,W503
-exclude=*.*/*
+ignore = E501,W503
+exclude = *.*/*