feat.add patch_file method

issue 7

Author: halloju

src/solid/solid_api.py

@@ -189,7 +189,22 @@ def put_file(self, url, content: RequestContent, content_type, options: WriteOpt
         return self.put(url, request_options)
 
     def patch_file(self, url, patch_content, patch_content_type) -> Response:
-        raise Exception('Not implemented')
+    # raise Exception('Not implemented')
+        if url[-1] == '/':
+            raise Exception("Cannot use patchFile to create a folder : {}".format(url))
+        # if options.merge == MERGE.KEEP_TARGET and self.item_exists(url):
+        #     raise Exception(f'File already exists: {url}')
+
+        request_options = {
+            'headers': {
+                'Link': LINK.RESOURCE.value,
+                'Content-Type': patch_content_type,
+            },
+            'content': patch_content
+        }
+
+        return self.put(url, request_options)
+    
 
     def read_folder(self, url, options: ReadFolderOptions = ReadFolderOptions()) -> FolderData:
         if url[-1] != '/':

tests/test_solid_api.py

@@ -13,7 +13,6 @@
 def gen_random_str() -> str:
     return uuid.uuid4().hex
 
-
 POD_ENDPOINT = os.getenv('SOLID_ENDPOINT')
 IDP = os.getenv('SOLID_IDP')
 USERNAME = os.getenv('SOLID_USERNAME')
@@ -143,5 +142,16 @@ def test_file():
     resp = api.get(url)
     assert resp.text == body
 
+    # patch
+    body = '#hello Solid! New World!'
+    f = io.BytesIO(body.encode('UTF-8'))
+    api.patch_file(url, f, 'text/markdown')
+
+    # retrieve
+    resp = api.get(url)
+    assert resp.text == body
+
     # delete
     api.delete(url)
+
+