Add tests for base64 filesource

lib/galaxy/files/sources/base64.py

@@ -28,5 +28,10 @@ class Base64FilesSource(BaseFilesSource):
     def _write_from(self, target_path, native_path, user_context=None):
         raise NotImplementedError()
 
+    def score_url_match(self, url: str):
+        if url.startswith("base64://"):
+            return len("base64://")
+        else:
+            return 0
 
 __all__ = ("Base64FilesSource",)

test/unit/files/base64_file_sources_conf.yml

@@ -0,0 +1,3 @@
+- type: base64
+  id: test1
+  doc: Test base64 string decoding

test/unit/files/test_base64.py

@@ -0,0 +1,21 @@
+import base64
+import os
+from galaxy import util
+
+from ._util import configured_file_sources, user_context_fixture, assert_realizes_as
+
+SCRIPT_DIRECTORY = os.path.abspath(os.path.dirname(__file__))
+FILE_SOURCES_CONF = os.path.join(SCRIPT_DIRECTORY, "base64_file_sources_conf.yml")
+
+
+def test_file_source():
+    ORIGINAL_STRING = "I'm a b64 encoded string"
+    test_url = f"base64://{util.unicodify(base64.b64encode(util.smart_str(ORIGINAL_STRING)))}"
+    user_context = user_context_fixture()
+    file_sources = configured_file_sources(FILE_SOURCES_CONF)
+    file_source_pair = file_sources.get_file_source_path(test_url)
+
+    assert file_source_pair.path == test_url
+    assert file_source_pair.file_source.id == "test1"
+
+    assert_realizes_as(file_sources, test_url, ORIGINAL_STRING, user_context=user_context)