Try to increase test coverage

tests/pyreverse/data/packages_depth_limited.dot

@@ -0,0 +1,9 @@
+digraph "packages_depth_limited" {
+rankdir=BT
+charset="utf-8"
+"data" [color="black", label=<data>, shape="box", style="solid"];
+"data.clientmodule_test" [color="black", label=<data.clientmodule_test>, shape="box", style="solid"];
+"data.nullable_pattern" [color="black", label=<data.nullable_pattern>, shape="box", style="solid"];
+"data.property_pattern" [color="black", label=<data.property_pattern>, shape="box", style="solid"];
+"data.suppliermodule_test" [color="black", label=<data.suppliermodule_test>, shape="box", style="solid"];
+}

tests/pyreverse/test_writer.py

@@ -338,3 +338,17 @@ def test_should_show_node_classes(
             f"{writer.should_show_node(path, is_class=True)}"
         )
         assert writer.should_show_node(path, is_class=True) == should_show
+
+
+def test_depth_limited_write(
+    default_config: PyreverseConfig, get_project: GetProjectCallable
+) -> None:
+    """Test package diagram generation with a depth limit of 1."""
+    writer = DiagramWriter(default_config)
+    project = get_project(TEST_DATA_DIR, name="depth_limited")
+    linker = Linker(project)
+    handler = DiadefsHandler(default_config)
+    dd = DefaultDiadefGenerator(linker, handler).visit(project)
+    writer.max_depth = 1
+    writer.write(dd)
+    _assert_files_are_equal("packages_depth_limited.dot")