Fix wording and typos in titles for recently added specs

Author: andrykonchin

spec/dynamoid/finders_spec.rb

@@ -14,7 +14,7 @@
       end
     end
 
-    context 'one primary key provided' do
+    context 'a single primary key provided' do
       context 'simple primary key' do
         it 'finds' do
           obj = klass.create
@@ -103,21 +103,21 @@
           end
         end
 
-        context 'when true' do
+        context 'when false' do
           it 'leads to not raising exception if model not found' do
             expect(klass.find('blah-blah', raise_error: false)).to eq nil
           end
         end
       end
 
-      it 'uses dumped value of partition key to update item' do
+      it 'uses dumped value of partition key' do
         klass = new_class(partition_key: { name: :published_on, type: :date })
 
         obj = klass.create!(published_on: '2018-10-07'.to_date)
         expect(klass.find(obj.published_on)).to eql(obj)
       end
 
-      it 'uses dumped value of sort key to update item' do
+      it 'uses dumped value of sort key' do
         klass = new_class do
           range :published_on, :date
         end
@@ -274,25 +274,23 @@
           end
         end
 
-        context 'when true' do
+        context 'when false' do
           it 'leads to not raising exception if model not found' do
-            obj = klass.create
-
-            # expect(klass.find([obj.id, 'blah-blah'], raise_error: false)).to eq [obj]
-            expect(klass.find_all([obj.id, 'blah-blah'])).to eq [obj]
+            obj = klass.create!
+            expect(klass.find([obj.id, 'blah-blah'], raise_error: false)).to eq [obj]
           end
         end
       end
 
-      it 'uses dumped value of partition key to update item' do
+      it 'uses dumped value of partition key' do
         klass = new_class(partition_key: { name: :published_on, type: :date })
         objects = (1..2).map { |i| klass.create(published_on: '2018-10-07'.to_date + i) }
         obj1, obj2 = objects
 
         expect(klass.find([obj1.published_on, obj2.published_on])).to match_array(objects)
       end
 
-      it 'uses dumped value of sort key to update item' do
+      it 'uses dumped value of sort key' do
         klass = new_class do
           range :published_on, :date
         end

spec/dynamoid/persistence_spec.rb

@@ -2651,7 +2651,7 @@ def around_update_callback
 
     context 'primary key dumping' do
       context 'new model' do
-        it 'uses dumped value of partition key to update item' do
+        it 'uses dumped value of partition key to save item' do
           klass = new_class(partition_key: { name: :published_on, type: :date }) do
             field :title
           end
@@ -2663,7 +2663,7 @@ def around_update_callback
           expect(obj_loaded.title).to eq 'Some title'
         end
 
-        it 'uses dumped value of sort key to update item' do
+        it 'uses dumped value of sort key to save item' do
           klass = new_class do
             range :published_on, :date
             field :title
@@ -2678,7 +2678,7 @@ def around_update_callback
       end
 
       context 'persised model' do
-        it 'uses dumped value of partition key to update item' do
+        it 'uses dumped value of partition key to save item' do
           klass = new_class(partition_key: { name: :published_on, type: :date }) do
             field :title
           end
@@ -2691,7 +2691,7 @@ def around_update_callback
           expect(obj_loaded.title).to eq 'New'
         end
 
-        it 'uses dumped value of sort key to update item' do
+        it 'uses dumped value of sort key to save item' do
           klass = new_class do
             range :published_on, :date
             field :title

spec/dynamoid/transaction_write/save_spec.rb

@@ -690,7 +690,7 @@ def around_save_callback
     expect(obj_to_create).not_to be_changed
   end
 
-  it 'is marked as not persusted and is marked as changed at creation when the transaction rolled back' do
+  it 'is marked as not persisted and is marked as changed at creation when the transaction rolled back' do
     obj = klass.new(name: 'Alex')
 
     expect {