(#65) Add tests for the tags command

.travis.yml

@@ -18,6 +18,7 @@ env:
   - LPN_COMMAND=rmi
   - LPN_COMMAND=run
   - LPN_COMMAND=stop
+  - LPN_COMMAND=tags
   - LPN_COMMAND=version
 
 before_install:
@@ -30,7 +31,7 @@ before_install:
 
 install:
   - |
-    if [ "$LPN_COMMAND" != "license" ] && [ "$LPN_COMMAND" != "version" ]; then
+    if [ "$LPN_COMMAND" != "license" ] && [ "$LPN_COMMAND" != "tags" ] && [ "$LPN_COMMAND" != "version" ]; then
       ./scripts/pull-images.sh
     fi
   - go build

features/tags.feature

@@ -0,0 +1,67 @@
+Feature: Tags command
+  As a newcomer to lpn
+  I want to be able to list the available tags for an image type
+
+  Scenario Outline: List available tags without pagination
+    When I run `lpn tags <type>`
+    Then the output should contain:
+    """
+    elements in page 1 of
+    """
+    And the exit status should be 0
+
+  Examples:
+    | type    |
+    | ce      |
+    | commerce |
+    | dxp     |
+    | nightly |
+    | release |
+
+  Scenario Outline: List available tags with pagination
+    When I run `lpn tags <type> -p 2 -s 2`
+    Then the output should contain:
+    """
+    elements in page 2 of
+    """
+    And the exit status should be 0
+
+  Examples:
+    | type    |
+    | ce      |
+    | commerce |
+    | dxp     |
+    | nightly |
+    | release |
+
+  Scenario Outline: List available tags with size
+    When I run `lpn tags <type> -s 2`
+    Then the output should contain:
+    """
+    showing 2 elements in page 1 of
+    """
+    And the exit status should be 0
+
+  Examples:
+    | type    |
+    | ce      |
+    | commerce |
+    | dxp     |
+    | nightly |
+    | release |
+
+  Scenario Outline: Inform that the combination of page and size produces a not found resource error
+    When I run `lpn tags <type> -p 103`
+    Then the output should contain:
+    """
+    There are no available tags for that pagination. Please use --page and --size arguments to filter properly
+    """
+    And the exit status should be 0
+
+  Examples:
+    | type    |
+    | ce      |
+    | commerce |
+    | dxp     |
+    | nightly |
+    | release |