Unit tests for block env options

[hbugdoll]

What are you changing/introducing

• Added new unit tests for block env options (except 'pageObject')

Block Test

• Added new test BlockTest::testBlockEnvOptions()
  • Moved setting env options from BlockTest::testBlockValues() to this new test
• Enhanced therefore TestBlock::admin()
  • Accessing and returning env options and unused config value
• Improved BlockTest::testBlockValues()
  • Checking unused config value

Block Placeholder Iteration Test

• Added new test BlockPlaceholderIterationTest::testEnvOptionsPlaceholderIteration()
  • 3 equal blocks on 1 page via fixtures
  • Checking env options in admin context via NavItemPage::getPlaceholder()
  • Checking env options in frontend context via NavItemPage::renderPlaceholder()
• Added therefore new testing block TestingEnvOptionsBlock
  • Accessing env options in admin context inside renderAdmin()
  • Accessing env options in frontend context inside renderFrontend() (JSON decoding/encoding is needed because of internal processing & concat)
• Completed access on all block models in BlockPlaceholderIterationTest::testRenderPlaceholderIteration() for sake of completeness

Bugfix

• Fixed recently introduced 'equalIndex' iteration in admin context (pre-increment instead of post-increment)
• Reduced lines of code in frontend context

What is the reason for changing/introducing

see issue #401 and PR #403

QA

Q	A
Is bugfix?	yes
New feature?	no
Breaks BC?	no
Tests pass?	yes
Fixed issues	–

[nadar]

thanks for all the work, please check my review, everything else looks good!

[nadar]

thanks for the unit tests!

[hbugdoll]

Thanks for merging 👍