Refactor collapse user logic

Use simple loop for when we aren't collapsing users.
Add test which covers case when users are deleted.

Signed-off-by: Will Beason <willbeason@gmail.com>

test/Wikiq_Unit_Test.py

@@ -177,6 +177,19 @@ class WikiqTestCase(unittest.TestCase):
         baseline = pd.read_table(tester.baseline_file)
         assert_frame_equal(test, baseline, check_like=True)
 
+    def test_WP_collapse_user(self):
+        tester = WikiqTester(IKWIKI, "collapse_user")
+
+        try:
+            tester.call_wikiq("--collapse-user")
+        except subprocess.CalledProcessError as exc:
+            self.fail(exc.stderr.decode("utf8"))
+
+        copyfile(tester.call_output, tester.test_file)
+        test = pd.read_table(tester.test_file)
+        baseline = pd.read_table(tester.baseline_file)
+        assert_frame_equal(test, baseline, check_like=True)
+
     def test_noargs(self):
         tester = WikiqTester(SAILORMOON, "noargs", in_compression="7z")
 

wikiq

@@ -102,35 +102,28 @@ class WikiqPage:
         #         3          A               B            True
         #         4          A               A           False
         # Post-loop                          A          Always
-        collapsed_revs = 0
-        for i, rev in enumerate(self.mwpage):
-            # never yield the first time
-            if i == 0:
-                if self.collapse_user:
-                    collapsed_revs = 1
-                    rev.collapsed_revs = collapsed_revs
 
+        if not self.collapse_user:
+            for rev in self.mwpage:
+                yield rev
+            return
+
+        collapsed_revs = 1
+        prev_rev = next(self.mwpage)
+        prev_rev.collapsed_revs = collapsed_revs
+
+        for rev in self.mwpage:
+            # yield if this is the last edit in a seq by a user and reset
+            # also yield if we don't know who the user is
+
+            if rev.deleted.user or prev_rev.deleted.user or rev.user.text != prev_rev.user.text:
+                yield prev_rev
+                collapsed_revs = 1
+                rev.collapsed_revs = collapsed_revs
             else:
-                if self.collapse_user:
-                    # yield if this is the last edit in a seq by a user and reset
-                    # also yield if we do know who the user is
-
-                    if rev.deleted.user or prev_rev.deleted.user:
-                        yield prev_rev
-                        collapsed_revs = 1
-                        rev.collapsed_revs = collapsed_revs
-
-                    elif not rev.user.text == prev_rev.user.text:
-                        yield prev_rev
-                        collapsed_revs = 1
-                        rev.collapsed_revs = collapsed_revs
-                    # otherwise, add one to the counter
-                    else:
-                        collapsed_revs += 1
-                        rev.collapsed_revs = collapsed_revs
-                # if collapse_user is false, we always yield
-                else:
-                    yield prev_rev
+                # Otherwise, collapse revision.
+                collapsed_revs += 1
+                rev.collapsed_revs = collapsed_revs
 
             prev_rev = rev
 
@@ -239,7 +232,7 @@ The RevDataBase type has all the fields that will be output no matter how wikiq
 
 
 @dataclass()
-class RevDataBase:
+class Revision:
     revid: int
     date_time: datetime
     articleid: int
@@ -247,13 +240,13 @@ class RevDataBase:
     title: str
     namespace: int
     deleted: bool
-    text_chars: int = None
-    revert: bool = None
+    text_chars: int | None = None
+    revert: bool | None = None
     reverteds: list[int] = None
-    sha1: str = None
-    minor: bool = None
-    editor: str = None
-    anon: bool = None
+    sha1: str | None = None
+    minor: bool | None = None
+    editor: str | None = None
+    anon: bool | None = None
 
     # toggles url encoding. this isn't a dataclass field since it doesn't have a type annotation
     urlencode = False
@@ -332,11 +325,11 @@ It just adds a new field and updates the pyarrow schema.
 
 
 @dataclass()
-class RevDataCollapse(RevDataBase):
+class RevDataCollapse(Revision):
     collapsed_revs: int = None
 
     pa_collapsed_revs_schema = pa.field('collapsed_revs', pa.int64())
-    pa_schema_fields = RevDataBase.pa_schema_fields + [pa_collapsed_revs_schema]
+    pa_schema_fields = Revision.pa_schema_fields + [pa_collapsed_revs_schema]
 
 
 """
@@ -347,7 +340,7 @@ If persistence data is to be computed we'll need the fields added by RevDataPers
 
 
 @dataclass()
-class RevDataPersistence(RevDataBase):
+class RevDataPersistence(Revision):
     token_revs: int = None
     tokens_added: int = None
     tokens_removed: int = None
@@ -359,7 +352,7 @@ class RevDataPersistence(RevDataBase):
         pa.field("tokens_removed", pa.int64()),
         pa.field("tokens_window", pa.int64())]
 
-    pa_schema_fields = RevDataBase.pa_schema_fields + pa_persistence_schema_fields
+    pa_schema_fields = Revision.pa_schema_fields + pa_persistence_schema_fields
 
 
 """
@@ -394,7 +387,7 @@ class WikiqParser:
         """
         self.input_file = input_file
 
-        self.collapse_user = collapse_user
+        self.collapse_user: bool = collapse_user
         self.persist: int = persist
         self.namespaces = []
         self.urlencode: bool = urlencode
@@ -419,7 +412,7 @@ class WikiqParser:
         elif self.persist != PersistMethod.none:
             revdata_type = RevDataPersistence
         else:
-            revdata_type = RevDataBase
+            revdata_type = Revision
 
         # if there are regex fields, we need to add them to the revdata type.
         regex_fields = [(field.name, list[str], dc.field(default=None)) for field in self.regex_schemas]