add --json option for dcos package repo list

cli/dcoscli/data/help/package.txt

@@ -18,7 +18,7 @@ Usage:
     dcos package search [--json <query>]
     dcos package repo add [--index=<index>] <repo-name> <repo-url>
     dcos package repo remove (--repo-name=<repo-name> | --repo-url=<repo-url>)
-    dcos package repo list
+    dcos package repo list [--json]
     dcos package uninstall [--cli | [--app --app-id=<app-id> --all]]
                            <package-name>
 

cli/dcoscli/package/main.py

@@ -55,8 +55,8 @@ def _cmds():
     return [
         cmds.Command(
             hierarchy=['package', 'repo', 'list'],
-            arg_keys=[],
-            function=_list_response),
+            arg_keys=['--json'],
+            function=_list_repos),
 
         cmds.Command(
             hierarchy=['package', 'repo', 'add'],
@@ -138,9 +138,11 @@ def _info():
     return 0
 
 
-def _list_response():
+def _list_repos(is_json):
     """List configured package repositories.
 
+    :param json_: output json if True
+    :type json_: bool
     :returns: Process status
     :rtype: int
     """
@@ -148,8 +150,12 @@ def _list_response():
     package_manager = _get_package_manager()
     repos = package_manager.get_repos()
 
-    if repos:
-        emitter.publish(repos)
+    if is_json:
+        return emitter.publish(repos)
+    elif repos.get("repositories"):
+        repos = ["{}: {}".format(repo.get("name"), repo.get("uri"))
+                 for repo in repos.get("repositories")]
+        emitter.publish("\n".join(repos))
     else:
         msg = ("There are currently no repos configured. "
                "Please use `dcos package repo add` to add a repo")

cli/tests/data/help/package.txt

@@ -18,7 +18,7 @@ Usage:
     dcos package search [--json <query>]
     dcos package repo add [--index=<index>] <repo-name> <repo-url>
     dcos package repo remove (--repo-name=<repo-name> | --repo-url=<repo-url>)
-    dcos package repo list
+    dcos package repo list [--json]
     dcos package uninstall [--cli | [--app --app-id=<app-id> --all]]
                            <package-name>
 

cli/tests/data/package/json/test_repo_list.json

@@ -0,0 +1,8 @@
+{
+  "repositories": [
+    {
+      "name": "test4",
+      "uri": "https://github.com/mesosphere/universe/archive/cli-test-4.zip"
+    }
+  ]
+}

cli/tests/integrations/test_package.py

@@ -59,6 +59,13 @@ test4: https://github.com/mesosphere/universe/archive/cli-test-4.zip
     assert_command(['dcos', 'package', 'repo', 'list'], stdout=repo_list)
 
 
+def test_repo_list_json():
+    repo_list = file_json(
+        'tests/data/package/json/test_repo_list.json')
+    assert_command(
+        ['dcos', 'package', 'repo', 'list', '--json'], stdout=repo_list)
+
+
 def test_repo_add():
     repo = \
         "https://github.com/mesosphere/universe/archive/cli-test-3.zip"

dcos/cosmospackage.py

@@ -158,14 +158,11 @@ class Cosmos():
     def get_repos(self):
         """List locations of repos
 
-        :returns: the list of repos, in resolution order
-        :rtype: [str]
+        :returns: the list of repos, in resolution order or list
+        :rtype: dict
         """
 
-        response = self.cosmos_post("repository/list", params={})
-        repos = ["{}: {}".format(repo.get("name"), repo.get("uri"))
-                 for repo in response.json().get("repositories")]
-        return "\n".join(repos)
+        return self.cosmos_post("repository/list", params={}).json()
 
     def add_repo(self, name, package_repo, index):
         """Add package repo and update repo with new repo