tests: integration: Merge memory to csv

Signed-off-by: John Andersen <[email protected]>

Author: John Andersen

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Integration tests using the command line interface.
 ### Changed
 - Features were moved from ModelContext to ModelConfig
 - CI is now run via GitHub Actions

tests/test_integration_cli.py

@@ -3,6 +3,8 @@
 various DFFML classes and constructs.
 """
 import io
+import inspect
+import pathlib
 import contextlib
 
 from dffml.cli.cli import CLI
@@ -67,3 +69,28 @@ async def test_memory_to_json(self):
         stdout = self.stdout.getvalue()
         for src_url in src_urls:
             self.assertIn(src_url, stdout)
+
+    async def test_memory_to_csv(self):
+        src_urls = ["A", "B", "C"]
+        filename = self.mktempfile()
+        await CLI.cli(
+            "merge",
+            "dest=csv",
+            "src=memory",
+            "-source-dest-filename",
+            filename,
+            "-source-src-repos",
+            *src_urls,
+        )
+        self.assertEqual(
+            pathlib.Path(filename).read_text(),
+            inspect.cleandoc(
+                """
+                src_url,label,prediction,confidence
+                A,unlabeled,,
+                B,unlabeled,,
+                C,unlabeled,,
+                """
+            )
+            + "\n",
+        )