options: compare equality of Arguments objects

ac45740

src/streamlink/options.py

@@ -279,6 +279,12 @@ class Arguments:
         # iterate in reverse order due to add() being called by multiple pluginargument decorators in reverse order
         return reversed(self.arguments.values())
 
+    def __hash__(self):
+        return hash(tuple(self.arguments.items()))
+
+    def __eq__(self, other):
+        return isinstance(other, self.__class__) and hash(self) == hash(other)
+
     def add(self, argument: Argument) -> None:
         self.arguments[argument.name] = argument
 

tests/test_options.py

@@ -213,8 +213,11 @@ class TestArgument:
             sensitive=False,
             argument_name="custom-name",
         )
+        a3 = Argument("foo")
         assert a1 is not a2
         assert a1 == a2
+        assert a1 != a3
+        assert a2 != a3
 
 
 class TestArguments:
@@ -246,6 +249,16 @@ class TestArguments:
         args.add(test3)
         assert list(iter(args)) == [test3, test1, test2]
 
+    def test_equality(self):
+        test1 = Arguments()
+        test1.add(Argument("testA"))
+        test1.add(Argument("testB"))
+        test2 = Arguments(Argument("testB"), Argument("testA"))
+        test3 = Arguments(Argument("testA"), Argument("testB"))
+        assert test1 == test2
+        assert test1 != test3
+        assert test2 != test3
+
     def test_requires(self):
         test1 = Argument("test1", requires="test2")
         test2 = Argument("test2", requires="test3")