Copy Blueprints Implementation (#2184)

tests/test_blueprint_copy.py

@@ -0,0 +1,70 @@
+from copy import deepcopy
+
+from sanic import Blueprint, Sanic, blueprints, response
+from sanic.response import text
+
+
+def test_bp_copy(app: Sanic):
+    bp1 = Blueprint("test_bp1", version=1)
+    bp1.ctx.test = 1
+    assert hasattr(bp1.ctx, "test")
+
+    @bp1.route("/page")
+    def handle_request(request):
+        return text("Hello world!")
+
+    bp2 = bp1.copy(name="test_bp2", version=2)
+    assert id(bp1) != id(bp2)
+    assert bp1._apps == bp2._apps == set()
+    assert not hasattr(bp2.ctx, "test")
+    assert len(bp2._future_exceptions) == len(bp1._future_exceptions)
+    assert len(bp2._future_listeners) == len(bp1._future_listeners)
+    assert len(bp2._future_middleware) == len(bp1._future_middleware)
+    assert len(bp2._future_routes) == len(bp1._future_routes)
+    assert len(bp2._future_signals) == len(bp1._future_signals)
+
+    app.blueprint(bp1)
+    app.blueprint(bp2)
+
+    bp3 = bp1.copy(name="test_bp3", version=3, with_registration=True)
+    assert id(bp1) != id(bp3)
+    assert bp1._apps == bp3._apps and bp3._apps
+    assert not hasattr(bp3.ctx, "test")
+
+    bp4 = bp1.copy(name="test_bp4", version=4, with_ctx=True)
+    assert id(bp1) != id(bp4)
+    assert bp4.ctx.test == 1
+
+    bp5 = bp1.copy(name="test_bp5", version=5, with_registration=False)
+    assert id(bp1) != id(bp5)
+    assert not bp5._apps
+    assert bp1._apps != set()
+
+    app.blueprint(bp5)
+
+    bp6 = bp1.copy(
+        name="test_bp6",
+        version=6,
+        with_registration=True,
+        version_prefix="/version",
+    )
+    assert bp6._apps
+    assert bp6.version_prefix == "/version"
+
+    _, response = app.test_client.get("/v1/page")
+    assert "Hello world!" in response.text
+
+    _, response = app.test_client.get("/v2/page")
+    assert "Hello world!" in response.text
+
+    _, response = app.test_client.get("/v3/page")
+    assert "Hello world!" in response.text
+
+    _, response = app.test_client.get("/v4/page")
+    assert "Hello world!" in response.text
+
+    _, response = app.test_client.get("/v5/page")
+    assert "Hello world!" in response.text
+
+    _, response = app.test_client.get("/version6/page")
+    assert "Hello world!" in response.text