Basic implementation of Complex and Rational classes

1 files changed, 40 insertions, 1 deletions

diff --git a/mrbgems/mruby-rational/test/rational.rb b/mrbgems/mruby-rational/test/rational.rb
index 6f20a6cd4..a86f00690 100644
--- a/mrbgems/mruby-rational/test/rational.rb
+++ b/mrbgems/mruby-rational/test/rational.rb
@@ -1,3 +1,42 @@
+def assert_rational(real, exp)
+  assert_float real.numerator,   exp.numerator        
+  assert_float real.denominator, exp.denominator
+end
+
 assert 'Rational' do
-  assert_equal Rational, 0r.class
+  r = 5r
+  assert_equal Rational, r.class
+  assert_equal [r.numerator, r.denominator], [5, 1]
+end
+
+assert 'Rational#*' do
+  assert_rational Rational(2, 3)  * Rational(2, 3),  Rational(4, 9)
+  assert_rational Rational(900)   * Rational(1),     Rational(900, 1)
+  assert_rational Rational(-2, 9) * Rational(-9, 2), Rational(1, 1)
+  assert_rational Rational(9, 8)  * 4,               Rational(9, 2)
+  assert_float    Rational(20, 9) * 9.8,             21.77777777777778
+end
+
+assert 'Rational#+' do
+  assert_rational Rational(2, 3)  + Rational(2, 3),  Rational(4, 3)
+  assert_rational Rational(900)   + Rational(1),     Rational(901, 1)
+  assert_rational Rational(-2, 9) + Rational(-9, 2), Rational(-85, 18)
+  assert_rational Rational(9, 8)  + 4,               Rational(41, 8)
+  assert_float    Rational(20, 9) + 9.8,             12.022222222222222
+end
+
+assert 'Rational#-' do
+  assert_rational Rational(2, 3)  - Rational(2, 3),  Rational(0, 1)
+  assert_rational Rational(900)   - Rational(1),     Rational(899, 1)
+  assert_rational Rational(-2, 9) - Rational(-9, 2), Rational(77, 18)
+  assert_rational Rational(9, 8)  - 4,               Rational(-23, 8)
+  assert_float    Rational(20, 9) - 9.8,             -7.577777777777778
+end
+
+assert 'Rational#/' do
+  assert_rational Rational(2, 3)  / Rational(2, 3),  Rational(1, 1)
+  assert_rational Rational(900)   / Rational(1),     Rational(900, 1)
+  assert_rational Rational(-2, 9) / Rational(-9, 2), Rational(4, 81)
+  assert_rational Rational(9, 8)  / 4,               Rational(9, 32)
+  assert_float    Rational(20, 9) / 9.8,             0.22675736961451246
 end
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