improve example spec isolation

Author: DannyBen

examples/command-default-force/README.md

@@ -24,8 +24,8 @@ commands:
 - name: all
   help: Run all tests
 
-  # By setting the `default: force`, it will be executed when the command line
-  # is not recognized, and when it is empty.
+  # By setting `default: force`, it will be executed when the command line is
+  # not recognized, and when it is empty.
   default: force
 
 - name: only

examples/command-default-force/src/bashly.yml

@@ -6,8 +6,8 @@ commands:
 - name: all
   help: Run all tests
 
-  # By setting the `default: force`, it will be executed when the command line
-  # is not recognized, and when it is empty.
+  # By setting `default: force`, it will be executed when the command line is
+  # not recognized, and when it is empty.
   default: force
 
 - name: only

spec/bashly/integration/examples_spec.rb

@@ -16,14 +16,15 @@
 
   test_cases = fixtures + examples
 
-  # To test one example, run: EXAMPLE=yaml bundle exec run spec examples
-  test_cases = ["examples/#{ENV['EXAMPLE']}"] if ENV['EXAMPLE']
-
+  # To only test examples containing a certain string in their path, run:
+  # EXAMPLE=yaml bundle exec run spec examples
   leeway = ENV['CI'] ? 30 : 0
 
   test_cases.each do |example|
     approval_name = example.gsub 'spec/fixtures/workspaces', 'fixtures'
 
+    next if ENV['EXAMPLE'] and !example.include? ENV['EXAMPLE']
+
     describe example do
       it 'is executed properly' do
         output = 'not executed'