Allow blueprints and groups to be infinitely reusable (#2150)

* Allow blueprints and groups to be infinitely reusable

tests/test_blueprint_group.py

@@ -200,7 +200,7 @@ def test_bp_group_as_nested_group():
     blueprint_group_1 = Blueprint.group(
         Blueprint.group(blueprint_1, blueprint_2)
     )
-    assert len(blueprint_group_1) == 2
+    assert len(blueprint_group_1) == 1
 
 
 def test_blueprint_group_insert():
@@ -215,9 +215,29 @@ def test_blueprint_group_insert():
     group.insert(0, blueprint_1)
     group.insert(0, blueprint_2)
     group.insert(0, blueprint_3)
-    assert group.blueprints[1].strict_slashes is False
-    assert group.blueprints[2].strict_slashes is True
-    assert group.blueprints[0].url_prefix == "/test"
+
+    @blueprint_1.route("/")
+    def blueprint_1_default_route(request):
+        return text("BP1_OK")
+
+    @blueprint_2.route("/")
+    def blueprint_2_default_route(request):
+        return text("BP2_OK")
+
+    @blueprint_3.route("/")
+    def blueprint_3_default_route(request):
+        return text("BP3_OK")
+
+    app = Sanic("PropTest")
+    app.blueprint(group)
+    app.router.finalize()
+
+    routes = [(route.path, route.strict) for route in app.router.routes]
+
+    assert len(routes) == 3
+    assert ("v1/test/bp1/", True) in routes
+    assert ("v1.3/test/bp2", False) in routes
+    assert ("v1.3/test", False) in routes
 
 
 def test_bp_group_properties():
@@ -231,19 +251,25 @@ def test_bp_group_properties():
         url_prefix="/grouped",
         strict_slashes=True,
     )
+    primary = Blueprint.group(group, url_prefix="/primary")
 
-    assert group.version_prefix == "/api/v"
-    assert blueprint_1.version_prefix == "/api/v"
-    assert blueprint_2.version_prefix == "/api/v"
+    @blueprint_1.route("/")
+    def blueprint_1_default_route(request):
+        return text("BP1_OK")
 
-    assert group.version == 1
-    assert blueprint_1.version == 1
-    assert blueprint_2.version == 1
+    @blueprint_2.route("/")
+    def blueprint_2_default_route(request):
+        return text("BP2_OK")
 
-    assert group.strict_slashes
-    assert blueprint_1.strict_slashes
-    assert blueprint_2.strict_slashes
+    app = Sanic("PropTest")
+    app.blueprint(group)
+    app.blueprint(primary)
+    app.router.finalize()
 
-    assert group.url_prefix == "/grouped"
-    assert blueprint_1.url_prefix == "/grouped/bp1"
-    assert blueprint_2.url_prefix == "/grouped/bp2"
+    routes = [route.path for route in app.router.routes]
+
+    assert len(routes) == 4
+    assert "api/v1/grouped/bp1/" in routes
+    assert "api/v1/grouped/bp2/" in routes
+    assert "api/v1/primary/grouped/bp1" in routes
+    assert "api/v1/primary/grouped/bp2" in routes