Do not add pytest automatically in init

CHANGELOG.md

@@ -14,6 +14,7 @@
 - Improved solver error messages.
 - `poetry` now always reads/writes the `pyproject.toml` file with the `utf-8` encoding.
 - `config --list` now lists all available settings.
+- `init` no longer adds `pytest` to development dependencies.
 
 ### Fixed
 

poetry/console/commands/init.py

@@ -106,7 +106,7 @@ The <info>init</info> command creates a basic <comment>pyproject.toml</> file in
 
         self.line("")
 
-        requirements = []
+        requirements = {}
 
         question = "Would you like to define your dependencies" " (require) interactively?"
         if self.confirm(question, True):
@@ -114,7 +114,7 @@ The <info>init</info> command creates a basic <comment>pyproject.toml</> file in
                 self._determine_requirements(self.option("dependency"))
             )
 
-        dev_requirements = []
+        dev_requirements = {}
 
         question = "Would you like to define your dev dependencies" " (require-dev) interactively"
         if self.confirm(question, True):

poetry/layouts/layout.py

@@ -58,7 +58,10 @@ class Layout(object):
         self._license = license
         self._python = python
         self._dependencies = dependencies or {}
-        self._dev_dependencies = dev_dependencies or {"pytest": "^3.5"}
+        if dev_dependencies is None:
+            dev_dependencies = {"pytest": "^3.5"}
+
+        self._dev_dependencies = dev_dependencies
 
         if not author:
             author = "Your Name <you@example.com>"

tests/console/commands/test_init.py

@@ -55,7 +55,6 @@ license = "MIT"
 python = "~2.7 || ^3.6"
 
 [tool.poetry.dev-dependencies]
-pytest = "^3.5"
 """
 
     assert expected in output
@@ -63,6 +62,7 @@ pytest = "^3.5"
 
 def test_interactive_with_dependencies(app, repo, mocker, poetry):
     repo.add_package(get_package("pendulum", "2.0.0"))
+    repo.add_package(get_package("pytest", "3.6.0"))
 
     command = app.find("init")
     command._pool = poetry.pool
@@ -85,7 +85,11 @@ def test_interactive_with_dependencies(app, repo, mocker, poetry):
             "0",  # First option
             "",  # Do not set constraint
             "",  # Stop searching for packages
-            "n",  # Interactive dev packages
+            "",  # Interactive dev packages
+            "pytest",  # Search for package
+            "0",
+            "",
+            "",
             "\n",  # Generate
         ]
     )
@@ -105,7 +109,7 @@ python = "~2.7 || ^3.6"
 pendulum = "^2.0"
 
 [tool.poetry.dev-dependencies]
-pytest = "^3.5"
+pytest = "^3.6"
 """
 
     assert expected in output