fixed for BEL child schema; better support

- fixes
  - moved evidence inside definitions section
  - moved edge inside graph/properties
  - fixed evidence JSON pointer in edge metadata
  - fixed citation/type string enumeration
- added test for schema/example validation for bel child schema
- refactored tests to subclass Minitest::Unit::TestCase
- bumped Gemfile.lock to use latest json-schema and rake deps

Author: abargnesi

.build/Gemfile.lock

@@ -2,8 +2,8 @@ GEM
   remote: https://rubygems.org/
   specs:
     json (1.8.1)
-    json-schema (2.2.2)
-    rake (10.3.1)
+    json-schema (2.2.4)
+    rake (10.3.2)
 
 PLATFORMS
   ruby

.build/test/test-bel.rb

@@ -0,0 +1,29 @@
+require 'json'
+require 'json-schema'
+require 'pathname'
+require 'pp'
+require 'minitest/autorun'
+require 'minitest/unit'
+
+class ExtTest < Minitest::Unit::TestCase
+
+  def test_validate_schema
+    root = Pathname(File.dirname(File.expand_path __FILE__)) + '..' + '..' + 'child-schemas'
+    schema = JSON.parse File.read(root + 'bel-json-graph.schema.json')
+    errors = JSON::Validator.fully_validate_schema(schema)
+
+    assert errors.empty?, errors.join("\n")
+
+    root = Pathname(File.dirname(File.expand_path __FILE__)) + '..' + '..'
+    data = JSON.parse File.open(root + 'examples' + 'test.network.json', 'r:UTF-8', &:read)
+    errors = JSON::Validator.fully_validate(schema, data, :insert_defaults => true, :errors_as_objects => true)
+
+    if ENV['JGS_VERBOSE']
+      puts "\n\nValidated JSON for example: examples/test.network.json"
+      pp data
+    end
+
+    assert errors.empty?, errors.join("\n")
+  end
+end
+# vim: ts=2 sts=2 sw=2

.build/test/test-examples.rb

@@ -1,9 +1,10 @@
 require 'json'
 require 'json-schema'
-require 'test/unit'
 require 'pathname'
- 
-class ExamplesTest < Test::Unit::TestCase
+require 'minitest/autorun'
+require 'minitest/unit'
+
+class ExamplesTest < Minitest::Unit::TestCase
 
   def setup
     root = Pathname(File.dirname(File.expand_path __FILE__)) + '..' + '..'

.build/test/test-schema.rb

@@ -1,8 +1,9 @@
 require 'json'
 require 'json-schema'
-require "test/unit"
- 
-class SchemaTest < Test::Unit::TestCase
+require "minitest/autorun"
+require "minitest/unit"
+
+class SchemaTest < Minitest::Unit::TestCase
 
   def test_validate_schema
     root = Pathname(File.dirname(File.expand_path __FILE__)) + '..' + '..'