migration base suppress validations

lib/mv/core/migration/base.rb

@@ -24,8 +24,10 @@ def initialize()
         SUPPORTED_METHODS.each do |operation_name|
           define_method operation_name do |*args|
 
-            operation = operations_factory.create_operation(operation_name, *args)
-            operations_list.add_operation(operation)
+            unless disabled_validations?
+              operation = operations_factory.create_operation(operation_name, *args)
+              operations_list.add_operation(operation)
+            end
           end
         end
 
@@ -50,14 +52,36 @@ def execute
         def add_column table_name, column_name, opts
           return unless opts.present?
 
-          operation = operations_factory.create_operation(:add_column, table_name, column_name, opts)
-          operations_list.add_operation(operation)
+          unless disabled_validations?
+            operation = operations_factory.create_operation(:add_column, table_name, column_name, opts)
+            operations_list.add_operation(operation)
+          end
+        end
+
+        def with_suppressed_validations
+          disable_validations!
+          yield
+          enable_validations!
         end
 
         class << self
           alias_method :current, :instance
 
-          delegate *[SUPPORTED_METHODS, :execute].flatten, to: :current, allow_nil: true
+          delegate *[SUPPORTED_METHODS, :execute, :with_suppressed_validations].flatten, to: :current, allow_nil: true
+        end
+
+        private
+
+        def disabled_validations?
+          !!@disabled_validations
+        end
+
+        def disable_validations!
+          @disabled_validations = true
+        end
+
+        def enable_validations!
+          @disabled_validations = false
         end
       end
     end

spec/mv/core/migration/base_spec.rb

@@ -28,6 +28,19 @@
       end
     end
 
+    describe "when validaions are suppressed" do
+      subject(:add_column) {
+        migration.with_suppressed_validations do
+          migration.add_column :table_name, :column_name, length: { is: 5 } 
+        end
+      }
+
+      it "does NOT add any operation to the list" do
+        expect(migration.operations_list).not_to receive(:add_operation)
+        add_column
+      end
+    end
+
     describe "when validations are NOT defined" do
       subject(:add_column) {
         migration.add_column :table_name, :column_name, nil
@@ -55,6 +68,19 @@
 
       subject
     end
+
+    describe "when validaions are suppressed" do
+      subject(:remove_column) do
+        migration.with_suppressed_validations do
+          migration.remove_column :table_name, :column_name 
+        end
+      end
+
+      it "does NOT add any operation to the list" do
+        expect(migration.operations_list).not_to receive(:add_operation)
+        remove_column
+      end
+    end
   end
 
   describe "#rename_column" do
@@ -72,6 +98,19 @@
 
       subject
     end
+
+    describe "when validaions are suppressed" do
+      subject(:rename_column) do
+        migration.with_suppressed_validations do
+          migration.rename_column :table_name, :old_column_name, :new_column_name 
+        end
+      end
+
+      it "does NOT add any operation to the list" do
+        expect(migration.operations_list).not_to receive(:add_operation)
+        rename_column
+      end
+    end
   end
 
   describe "#change_column" do
@@ -89,6 +128,19 @@
 
       subject
     end
+
+    describe "when validaions are suppressed" do
+      subject(:change_column) do
+        migration.with_suppressed_validations do
+          migration.change_column :table_name, :column_name, length: { is: 5 }  
+        end
+      end
+
+      it "does NOT add any operation to the list" do
+        expect(migration.operations_list).not_to receive(:add_operation)
+        change_column
+      end
+    end
   end
 
   describe "#rename_table" do
@@ -106,6 +158,19 @@
 
       subject
     end
+
+    describe "when validaions are suppressed" do
+      subject(:rename_table) do
+        migration.with_suppressed_validations do
+          migration.rename_table :old_table_name, :new_table_name
+        end
+      end
+
+      it "does NOT add any operation to the list" do
+        expect(migration.operations_list).not_to receive(:add_operation)
+        rename_table
+      end
+    end
   end
 
   describe "#drop_table" do
@@ -123,6 +188,19 @@
 
       subject
     end
+
+    describe "when validaions are suppressed" do
+      subject(:drop_table) do
+        migration.with_suppressed_validations do
+          migration.drop_table :table_name
+        end
+      end
+
+      it "does NOT add any operation to the list" do
+        expect(migration.operations_list).not_to receive(:add_operation)
+        drop_table
+      end
+    end
   end
 
   describe "#execute" do
@@ -133,6 +211,5 @@
 
       subject
     end
-
   end
 end