Add test

tests/console/commands/plugin/test_add.py

@@ -161,6 +161,38 @@ def test_add_with_git_constraint_with_extras(
     )
 
 
+def test_add_with_git_constraint_with_subdirectory(
+    app: PoetryTestApplication,
+    repo: TestRepository,
+    tester: CommandTester,
+    env: MockEnv,
+    installed: Repository,
+):
+    repo.add_package(Package("pendulum", "2.0.5"))
+
+    tester.execute("git+https://github.com/demo/poetry-plugin2.git#subdirectory=subdir")
+
+    expected = """\
+Updating dependencies
+Resolving dependencies...
+
+Writing lock file
+
+Package operations: 2 installs, 0 updates, 0 removals
+
+  • Installing pendulum (2.0.5)
+  • Installing poetry-plugin (0.1.2 9cf87a2)
+"""
+
+    assert_plugin_add_result(
+        tester,
+        app,
+        env,
+        expected,
+        {"git": "https://github.com/demo/poetry-plugin2.git", "subdirectory": "subdir"},
+    )
+
+
 def test_add_existing_plugin_warns_about_no_operation(
     app: PoetryTestApplication,
     repo: TestRepository,

tests/fixtures/git/github.com/demo/poetry-plugin2/subdir/pyproject.toml

@@ -0,0 +1,18 @@
+[tool.poetry]
+name = "poetry-plugin"
+version = "0.1.2"
+description = "Some description."
+authors = [
+    "Sébastien Eustace <[email protected]>"
+]
+license = "MIT"
+
+[tool.poetry.dependencies]
+python = "^3.6"
+pendulum = "^2.0"
+tomlkit = {version = "^0.7.0", optional = true}
+
+[tool.poetry.extras]
+foo = ["tomlkit"]
+
+[tool.poetry.dev-dependencies]