[php-graphene-node-client] Tests and Changes for Golos 0.18HF

My contribution to the development of the Php Graphene Node Client:

My pull request contains:

• add PHPUnit Tests for testing commands in Golos and Steem Blockchains
• changes in commands structure for Golos 0.18HF

Tests

Any developing project needs tests. In addition to this, Golos Hardforks is scheduled every 2-3 months. And Hardfork at Steem is approaching.
So I decided to add tests to the project.
To run the tests, you must have PHPUnit installed on your system. More information about the installation can be read here

Launching tests:

cd Tests
phpunit CommandsTest.php
phpunit CommandsTest.php --filter = testGetBlock // test only one command

Currently, testing covers functions:

• get_block()
• get_account_history()
• get_accounts()
• get_account_count()
• get_account_votes()
• get_active_witnesses()
• get_content()
• get_block_header()
• get_content_replies()
• get_current_median_history_price()
• get_discussions_by_author_before_date()
• get_discussions_by_blog()
• get_discussions_by_created()
• get_discussions_by_feed()
• get_discussions_by_trending()
• get_ops_in_block()
• get_trending_tags()
• get_witnesses_by_vote()
• get_followers()

Changes for Golos 0.18HF:

• Added new apiName: tags
• All commands get_discussions_by_* moved to new tags
• Added new apiName: witness_api
• Commands: get_active_witnesses, get_current_median_history_price, get_witnesses_by_vote moved to new witness_api

Link to my pull request:

https://github.com/t3ran13/php-graphene-node-client/pull/14

My Github account:

https://github.com/semasping

Php Graphene Node Client account:

https://github.com/t3ran13/php-graphene-node-client