replace adapter test DSL with shared contexts (#347)

Co-authored-by: Geremia Taglialatela <tagliala@users.noreply.github.com>

Author: Martin-Alexander

spec/chrono_model/adapter/base_spec.rb

@@ -4,7 +4,6 @@
 require 'support/adapter/structure'
 
 RSpec.describe ChronoModel::Adapter do
-  include ChronoTest::Adapter::Helpers
   include ChronoTest::Adapter::Structure
 
   subject { adapter }
@@ -112,11 +111,15 @@
   describe '.is_chrono?' do
     subject(:is_chrono?) { adapter.is_chrono?(table) }
 
-    with_temporal_table do
+    context 'with temporal tables' do
+      include_context 'with temporal tables'
+
       it { is_expected.to be true }
     end
 
-    with_plain_table do
+    context 'with plain tables' do
+      include_context 'with plain tables'
+
       it { is_expected.to be false }
     end
 

spec/chrono_model/adapter/ddl_spec.rb

@@ -4,7 +4,6 @@
 require 'support/adapter/structure'
 
 RSpec.describe ChronoModel::Adapter do
-  include ChronoTest::Adapter::Helpers
   include ChronoTest::Adapter::Structure
 
   let(:current) { "#{ChronoModel::Adapter::TEMPORAL_SCHEMA}.#{table}" }
@@ -188,7 +187,7 @@ def ids(table)
     end
 
     describe 'schema changes' do
-      table 'journaled_things'
+      let(:table) { 'journaled_things' }
 
       before do
         adapter.create_table table, temporal: true, journal: %w[foo] do |t|

spec/chrono_model/adapter/indexes_spec.rb

@@ -4,7 +4,6 @@
 require 'support/adapter/structure'
 
 RSpec.describe ChronoModel::Adapter do
-  include ChronoTest::Adapter::Helpers
   include ChronoTest::Adapter::Structure
 
   before do