BIND 10 #1878: lettuce tests should be more fail safe about runtime environment

[BIND 10 Development]

#1878: lettuce tests should be more fail safe about runtime environment
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                   Reporter:         |                 Owner:  UnAssigned
  jinmei                             |                Status:  new
                       Type:         |             Milestone:  Next-Sprint-
  defect                             |  Proposed
                   Priority:         |            Resolution:
  medium                             |             Sensitive:  0
                  Component:  build  |           Sub-Project:  Core
  system                             |  Estimated Difficulty:  0
                   Keywords:         |           Total Hours:  0
            Defect Severity:  N/A    |
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Comment (by jinmei):

 okay, so my revised suggestion is to introduce a "run" script:

 {{{
 % run-lettuce.sh [-I] [feature...]
 }}}

 If -I is specified, it means the installed environment; otherwise
 the in-tree environment should be used and the necessary environment
 variables are set internally.  In either case it sets the special
 LETTUCE_SETUP_COMPLETED environment variable.  some terrain script
 checks whether this variable is set or not.  So simply running
 'lettuce' will fail with a warning.

 feature... is an optional space-separated list of features.  If
 explicitly specified, only the specified tests will be run; by default
 all features will be run.

 'make lettuce' executes this script without any options.

-- 
Ticket URL: <http://bind10.isc.org/ticket/1878#comment:3>
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