test/test_exchange.rb in shanna-big_money-0.2.2 vs test/test_exchange.rb in shanna-big_money-0.3.0

@@ -1,21 +1,35 @@
-require 'test/unit'
-require 'big_money'
+# coding: utf-8
+require 'helper'
+require 'big_money/exchange'
 
-class TestExchange < Test::Unit::TestCase
-  def setup
-    @aud = BigMoney.currency(:aud)
-    @usd = BigMoney.currency(:usd)
+class TestEx < BigMoney::Exchange
+  def self.read_rate(from, to)
+    BigDecimal.new('2')
   end
 
-  def test_rate
-    assert_kind_of BigDecimal, BigMoney::Exchange.rate(@aud, @usd)
-    assert_kind_of BigDecimal, BigMoney::Exchange.rate(:aud, :usd)
-    assert_raise BigMoney::UnknownCurrency do
-      BigMoney::Exchange.rate(:aud, :fud)
-    end
+  def self.currencies
+    BigMoney::Currency.all
   end
+end
 
-  def test_equal_rate
-    assert_equal BigDecimal(1.to_s), BigMoney::Exchange.rate(:usd, :usd)
+class TestExchange < Test::Unit::TestCase
+  context BigMoney::Exchange do
+    setup do
+      @aud = BigMoney.currency(:aud)
+      @usd = BigMoney.currency(:usd)
+    end
+
+    should 'return rate' do
+      bd = BigDecimal.new('2')
+      assert_equal bd, BigMoney::Exchange.rate(@aud, @usd)
+      assert_equal bd, BigMoney::Exchange.rate(:aud, :usd)
+      assert_raise(ArgumentError) do
+        BigMoney::Exchange.rate(:aud, :fud)
+      end
+    end
+
+    should 'return equal rate' do
+      assert_equal BigDecimal.new('1'), BigMoney::Exchange.rate(:usd, :usd)
+    end
   end
 end