Add default columns to list views

This uses the default "All" view columns as the columns for any views
without a columns attribute sets.  This means that view definitions
which don't define any columns will still end up producing a useful
view.

(Note that the "All" columns are not fetched from the Jenkins instance;
the columns that are the default in a fresh Jenkins install are
hard-coded.)

Change-Id: I0a21e024be383088c6238c3fc7beb708af8c2c46

jenkins_jobs/modules/view_list.py

@@ -50,6 +50,8 @@ COLUMN_DICT = {
     'build-button': 'hudson.views.BuildButtonColumn',
     'last-stable': 'hudson.views.LastStableColumn',
 }
+DEFAULT_COLUMNS = ['status', 'weather', 'job', 'last-success', 'last-failure',
+                   'last-duration', 'build-button']
 
 
 class List(jenkins_jobs.modules.base.Base):
@@ -78,7 +80,7 @@ class List(jenkins_jobs.modules.base.Base):
         XML.SubElement(root, 'jobFilters')
 
         c_xml = XML.SubElement(root, 'columns')
-        columns = data.get('columns', [])
+        columns = data.get('columns', DEFAULT_COLUMNS)
 
         for column in columns:
             if column in COLUMN_DICT:

tests/views/fixtures/view_list_defaults001.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<hudson.model.ListView>
+  <name>list-view-name01</name>
+  <description>Sample description</description>
+  <filterExecutors>true</filterExecutors>
+  <filterQueue>true</filterQueue>
+  <properties class="hudson.model.View$PropertyList"/>
+  <jobNames>
+    <comparator class="hudson.util.CaseInsensitiveComparator"/>
+    <string>job-name-1</string>
+    <string>job-name-2</string>
+    <string>job-name-3</string>
+  </jobNames>
+  <jobFilters/>
+  <columns>
+    <hudson.views.StatusColumn/>
+    <hudson.views.WeatherColumn/>
+    <hudson.views.JobColumn/>
+    <hudson.views.LastSuccessColumn/>
+    <hudson.views.LastFailureColumn/>
+    <hudson.views.LastDurationColumn/>
+    <hudson.views.BuildButtonColumn/>
+  </columns>
+  <recurse>true</recurse>
+  <statusFilter>false</statusFilter>
+</hudson.model.ListView>

tests/views/fixtures/view_list_defaults001.yaml

@@ -0,0 +1,11 @@
+name: list-view-name01
+view-type: list
+description: 'Sample description'
+filter-executors: true
+filter-queue: true
+job-name:
+    - job-name-1
+    - job-name-2
+    - job-name-3
+recurse: true
+status-filter: false