1 files changed, 85 insertions, 0 deletions
diff --git a/activerecord/test/cases/arel/nodes/equality_test.rb b/activerecord/test/cases/arel/nodes/equality_test.rb
new file mode 100644
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+++ b/activerecord/test/cases/arel/nodes/equality_test.rb
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+# frozen_string_literal: true
+require_relative '../helper'
+
+module Arel
+  module Nodes
+    describe 'equality' do
+      # FIXME: backwards compat
+      describe 'backwards compat' do
+        describe 'operator' do
+          it 'returns :==' do
+            attr = Table.new(:users)[:id]
+            left  = attr.eq(10)
+            left.operator.must_equal :==
+          end
+        end
+
+        describe 'operand1' do
+          it "should equal left" do
+            attr = Table.new(:users)[:id]
+            left  = attr.eq(10)
+            left.left.must_equal left.operand1
+          end
+        end
+
+        describe 'operand2' do
+          it "should equal right" do
+            attr = Table.new(:users)[:id]
+            left  = attr.eq(10)
+            left.right.must_equal left.operand2
+          end
+        end
+
+        describe 'to_sql' do
+          it 'takes an engine' do
+            engine = FakeRecord::Base.new
+            engine.connection.extend Module.new {
+              attr_accessor :quote_count
+              def quote(*args) @quote_count += 1; super; end
+              def quote_column_name(*args) @quote_count += 1; super; end
+              def quote_table_name(*args) @quote_count += 1; super; end
+            }
+            engine.connection.quote_count = 0
+
+            attr = Table.new(:users)[:id]
+            test = attr.eq(10)
+            test.to_sql engine
+            engine.connection.quote_count.must_equal 3
+          end
+        end
+      end
+
+      describe 'or' do
+        it 'makes an OR node' do
+          attr = Table.new(:users)[:id]
+          left  = attr.eq(10)
+          right = attr.eq(11)
+          node  = left.or right
+          node.expr.left.must_equal left
+          node.expr.right.must_equal right
+        end
+      end
+
+      describe 'and' do
+        it 'makes and AND node' do
+          attr = Table.new(:users)[:id]
+          left  = attr.eq(10)
+          right = attr.eq(11)
+          node  = left.and right
+          node.left.must_equal left
+          node.right.must_equal right
+        end
+      end
+
+      it 'is equal with equal ivars' do
+        array = [Equality.new('foo', 'bar'), Equality.new('foo', 'bar')]
+        assert_equal 1, array.uniq.size
+      end
+
+      it 'is not equal with different ivars' do
+        array = [Equality.new('foo', 'bar'), Equality.new('foo', 'baz')]
+        assert_equal 2, array.uniq.size
+      end
+    end
+  end
+end