1 files changed, 41 insertions, 19 deletions
diff --git a/test/t/float.rb b/test/t/float.rb
index fc87a5b22..e2c139c03 100644
--- a/test/t/float.rb
+++ b/test/t/float.rb
@@ -5,6 +5,10 @@ assert('Float', '15.2.9') do
   Float.class == Class
 end
 
+assert('Float superclass', '15.2.9.2') do
+  Float.superclass == Numeric
+end
+
 assert('Float#+', '15.2.9.3.1') do
   a = 3.123456788 + 0.000000001
   b = 3.123456789 + 1
@@ -22,11 +26,11 @@ assert('Float#-', '15.2.9.3.2') do
 end
 
 assert('Float#*', '15.2.9.3.3') do
-  a = 3.123456789 * 3.123456789
-  b = 3.123456789 * 1
+  a = 3.125 * 3.125
+  b = 3.125 * 1
 
-  check_float(a, 9.75598231275019) and
-    check_float(b, 3.123456789)
+  check_float(a, 9.765625) and
+    check_float(b, 3.125)
 end
 
 assert('Float#/', '15.2.9.3.4') do
@@ -38,19 +42,19 @@ assert('Float#/', '15.2.9.3.4') do
 end
 
 assert('Float#%', '15.2.9.3.5') do
-  a = 3.123456789 % 3.123456789
-  b = 3.123456789 % 1
+  a = 3.125 % 3.125
+  b = 3.125 % 1
 
   check_float(a, 0.0) and
-    check_float(b, 0.123456789)
+    check_float(b, 0.125)
 end
 
 assert('Float#<=>', '15.2.9.3.6') do
-  a = 3.123456789 <=> 3.123456788
-  b = 3.123456789 <=> 3.123456789
-  c = 3.123456789 <=> 3.123456790
-  a2 = 3.123456789 <=> 3
-  c2 = 3.123456789 <=> 4
+  a = 3.125 <=> 3.123
+  b = 3.125 <=> 3.125
+  c = 3.125 <=> 3.126
+  a2 = 3.125 <=> 3
+  c2 = 3.125 <=> 4
 
   a == 1 and b == 0 and c == -1 and
     a2 == 1 and c2 == -1
@@ -61,7 +65,11 @@ assert('Float#==', '15.2.9.3.7') do
 end
 
 assert('Float#ceil', '15.2.9.3.8') do
-  3.123456789.ceil == 4
+  a = 3.123456789.ceil
+  b = 3.0.ceil
+  c = -3.123456789.ceil
+  d = -3.0.ceil
+  a == 4 and b == 3 and c == -3 and d == -3
 end
 
 assert('Float#finite?', '15.2.9.3.9') do
@@ -70,20 +78,34 @@ assert('Float#finite?', '15.2.9.3.9') do
 end
 
 assert('Float#floor', '15.2.9.3.10') do
-  3.123456789.floor == 3
+  a = 3.123456789.floor
+  b = 3.0.floor
+  c = -3.123456789.floor
+  d = -3.0.floor
+  a == 3 and b == 3 and c == -4 and d == -3
 end
 
 assert('Float#infinite?', '15.2.9.3.11') do
-  not 3.123456789.infinite? and
-    (1.0 / 0.0).infinite?
+  a = 3.123456789.infinite?
+  b = (1.0 / 0.0).infinite?
+  c = (-1.0 / 0.0).infinite?
+
+  a == nil and b == 1 and c == -1
 end
 
 assert('Float#round', '15.2.9.3.12') do
   a = 3.123456789.round
   b = 3.5.round
-  c = 3.499999999.round
+  c = 3.4999.round
+  d = (-3.123456789).round
+  e = (-3.5).round
+  f = 12345.67.round(-1)
+  g = 3.423456789.round(0)
+  h = 3.423456789.round(1)
+  i = 3.423456789.round(3)
 
-  a == 3 and b == 4 and c == 3
+  a == 3 and b == 4 and c == 3 and d == -3 and e == -4 and
+    f == 12350 and g == 3 and h == 3.4 and i == 3.423
 end
 
 assert('Float#to_f', '15.2.9.3.13') do
@@ -97,5 +119,5 @@ assert('Float#to_i', '15.2.9.3.14') do
 end
 
 assert('Float#truncate', '15.2.9.3.15') do
-  3.123456789.truncate == 3
+  3.123456789.truncate == 3 and -3.1.truncate == -3
 end