raise InvalidSearchError in condition.rb and add more tests

lib/ransack/nodes/condition.rb

@@ -1,3 +1,5 @@
+require 'ransack/invalid_search_error'
+
 module Ransack
   module Nodes
     class Condition < Node
@@ -38,7 +40,7 @@ def extract_values_for_condition(key, context = nil)
             predicate = Predicate.named(name)
 
             unless predicate || Ransack.options[:ignore_unknown_conditions]
-              raise ArgumentError, "No valid predicate for #{key}"
+              raise InvalidSearchError, "No valid predicate for #{key}"
             end
 
             if context.present?

spec/ransack/adapters/active_record/base_spec.rb

@@ -131,8 +131,8 @@ module ActiveRecord
             expect { Person.ransack('') }.to_not raise_error
           end
 
-          it 'raises exception if ransack! called with unknown condition' do
-            expect { Person.ransack!(unknown_attr_eq: 'Ernie') }.to raise_error(ArgumentError)
+          it 'raises InvalidSearchError exception if ransack! called with unknown condition' do
+            expect { Person.ransack!(unknown_attr_eq: 'Ernie') }.to raise_error(InvalidSearchError)
           end
 
           it 'does not modify the parameters' do

spec/ransack/nodes/condition_spec.rb

@@ -64,6 +64,7 @@ module Nodes
           end
 
           specify { expect { subject }.to raise_error ArgumentError }
+          specify { expect { subject }.to raise_error InvalidSearchError }
         end
 
         context "when ignore_unknown_conditions is true" do

spec/ransack/search_spec.rb

@@ -270,6 +270,7 @@ module Ransack
           end
 
           specify { expect { subject }.to raise_error ArgumentError }
+          specify { expect { subject }.to raise_error InvalidSearchError }
         end
 
         context 'when ignore_unknown_conditions configuration option is true' do
@@ -300,6 +301,7 @@ module Ransack
 
         context 'when ignore_unknown_conditions search parameter is false' do
           specify { expect { with_ignore_unknown_conditions_false }.to raise_error ArgumentError }
+          specify { expect { with_ignore_unknown_conditions_false }.to raise_error InvalidSearchError }
         end
 
         context 'when ignore_unknown_conditions search parameter is true' do
@@ -614,6 +616,18 @@ def remove_quotes_and_backticks(str)
         expect(@s.result.first.id).to eq 1
       end
 
+      it 'raises ArgumentError when an invalid argument is sent' do
+        expect do
+          @s.sorts = 1234
+        end.to raise_error(ArgumentError,  "Invalid argument (Integer) supplied to sorts=")
+      end
+
+      it 'raises InvalidSearchError when an invalid argument is sent' do
+        expect do
+          @s.sorts = 1234
+        end.to raise_error(Ransack::InvalidSearchError,  "Invalid argument (Integer) supplied to sorts=")
+      end
+
       it "PG's sort option", if: ::ActiveRecord::Base.connection.adapter_name == "PostgreSQL" do
         default = Ransack.options.clone