Merge pull request #305 from bovi/optional-feature

Tests are executed based on available features

4 files changed, 323 insertions, 312 deletions

diff --git a/mrblib/struct.rb b/mrblib/struct.rb
index 4b6d767a9..5d0ede90f 100644
--- a/mrblib/struct.rb
+++ b/mrblib/struct.rb
@@ -2,45 +2,49 @@
 # Struct
 #
 # ISO 15.2.18
-class Struct
 
-  ##
-  # Calls the given block for each element of +self+
-  # and pass the respective element.
-  #
-  # ISO 15.2.18.4.4
-  def each(&block)
-    self.class.members.each{|field|
-      block.call(self[field])
-    }
-    self
-  end
+if Object.const_defined?(:Struct)
+  class Struct
 
-  ##
-  # Calls the given block for each element of +self+
-  # and pass the name and value of the respectiev
-  # element.
-  #
-  # ISO 15.2.18.4.5
-  def each_pair(&block)
-    self.class.members.each{|field|
-      block.call(field.to_sym, self[field])
-    }
-    self
-  end
+    ##
+    # Calls the given block for each element of +self+
+    # and pass the respective element.
+    #
+    # ISO 15.2.18.4.4
+    def each(&block)
+      self.class.members.each{|field|
+        block.call(self[field])
+      }
+      self
+    end
 
-  ##
-  # Calls the given block for each element of +self+
-  # and returns an array with all elements of which
-  # block is not false.
-  #
-  # ISO 15.2.18.4.7
-  def select(&block)
-    ary = []
-    self.class.members.each{|field|
-      val = self[field]
-      ary.push(val) if block.call(val)
-    }
-    ary
+    ##
+    # Calls the given block for each element of +self+
+    # and pass the name and value of the respectiev
+    # element.
+    #
+    # ISO 15.2.18.4.5
+    def each_pair(&block)
+      self.class.members.each{|field|
+        block.call(field.to_sym, self[field])
+      }
+      self
+    end
+
+    ##
+    # Calls the given block for each element of +self+
+    # and returns an array with all elements of which
+    # block is not false.
+    #
+    # ISO 15.2.18.4.7
+    def select(&block)
+      ary = []
+      self.class.members.each{|field|
+        val = self[field]
+        ary.push(val) if block.call(val)
+      }
+      ary
+    end
   end
 end
+
diff --git a/test/t/math.rb b/test/t/math.rb
index 47a3bf527..025551b82 100644
--- a/test/t/math.rb
+++ b/test/t/math.rb
@@ -1,115 +1,117 @@
 ##
 # Math Test
 
-assert('Math.sin 0') do
-  check_float(Math.sin(0), 0)
-end
+if Object.const_defined?(:Math)
+  assert('Math.sin 0') do
+    check_float(Math.sin(0), 0)
+  end
 
-assert('Math.sin PI/2') do
-  check_float(Math.sin(Math::PI / 2), 1)
-end
+  assert('Math.sin PI/2') do
+    check_float(Math.sin(Math::PI / 2), 1)
+  end
 
+  assert('Fundamental trig identities') do
+    result = true
+    N = 15
+    N.times do |i|
+      a  = Math::PI / N * i
+      ca = Math::PI / 2 - a
+      s  = Math.sin(a)
+      c  = Math.cos(a)
+      t  = Math.tan(a)
+      result &= check_float(s, Math.cos(ca))
+      result &= check_float(t, 1 / Math.tan(ca))
+      result &= check_float(s ** 2 + c ** 2, 1)
+      result &= check_float(t ** 2 + 1, (1/c) ** 2)
+      result &= check_float((1/t) ** 2 + 1, (1/s) ** 2)
+    end
+    result
+  end
 
-assert('Fundamental trig identities') do
-  result = true
-  N = 15
-  N.times do |i|
-    a  = Math::PI / N * i
-    ca = Math::PI / 2 - a
-    s  = Math.sin(a)
-    c  = Math.cos(a)
-    t  = Math.tan(a)
-    result &= check_float(s, Math.cos(ca))
-    result &= check_float(t, 1 / Math.tan(ca))
-    result &= check_float(s ** 2 + c ** 2, 1)
-    result &= check_float(t ** 2 + 1, (1/c) ** 2)
-    result &= check_float((1/t) ** 2 + 1, (1/s) ** 2)
-  end
-  result
-end
+  assert('Math.erf 0') do
+    check_float(Math.erf(0), 0)
+  end
 
-assert('Math.erf 0') do
-  check_float(Math.erf(0), 0)
-end
+  assert('Math.exp 0') do
+    check_float(Math.exp(0), 1.0)
+  end
 
-assert('Math.exp 0') do
-  check_float(Math.exp(0), 1.0)
-end
+  assert('Math.exp 1') do
+    check_float(Math.exp(1), 2.718281828459045)
+  end
 
-assert('Math.exp 1') do
-  check_float(Math.exp(1), 2.718281828459045)
-end
+  assert('Math.exp 1.5') do
+    check_float(Math.exp(1.5), 4.4816890703380645)
+  end
 
-assert('Math.exp 1.5') do
-  check_float(Math.exp(1.5), 4.4816890703380645)
-end
+  assert('Math.log 1') do
+    check_float(Math.log(1), 0)
+  end
 
-assert('Math.log 1') do
-  check_float(Math.log(1), 0)
-end
+  assert('Math.log E') do
+    check_float(Math.log(Math::E), 1.0)
+  end
 
-assert('Math.log E') do
-  check_float(Math.log(Math::E), 1.0)
-end
+  assert('Math.log E**3') do
+    check_float(Math.log(Math::E**3), 3.0)
+  end
 
-assert('Math.log E**3') do
-  check_float(Math.log(Math::E**3), 3.0)
-end
+  assert('Math.log2 1') do
+    check_float(Math.log2(1), 0.0)
+  end
 
-assert('Math.log2 1') do
-  check_float(Math.log2(1), 0.0)
-end
+  assert('Math.log2 2') do
+    check_float(Math.log2(2), 1.0)
+  end
 
-assert('Math.log2 2') do
-  check_float(Math.log2(2), 1.0)
-end
+  assert('Math.log10 1') do
+    check_float(Math.log10(1), 0.0)
+  end
 
-assert('Math.log10 1') do
-  check_float(Math.log10(1), 0.0)
-end
+  assert('Math.log10 10') do
+    check_float(Math.log10(10), 1.0)
+  end
 
-assert('Math.log10 10') do
-  check_float(Math.log10(10), 1.0)
-end
+  assert('Math.log10 10**100') do
+    check_float(Math.log10(10**100), 100.0)
+  end
 
-assert('Math.log10 10**100') do
-  check_float(Math.log10(10**100), 100.0)
-end
+  assert('Math.sqrt') do
+    num = [0.0, 1.0, 2.0, 3.0, 4.0]
+    sqr = [0, 1, 4, 9, 16]
+    result = true
+    sqr.each_with_index do |v,i|
+      result &= check_float(Math.sqrt(v), num[i])
+    end
+    result
+  end
 
-assert('Math.sqrt') do
-  num = [0.0, 1.0, 2.0, 3.0, 4.0]
-  sqr = [0, 1, 4, 9, 16]
-  result = true
-  sqr.each_with_index do |v,i|
-    result &= check_float(Math.sqrt(v), num[i])
+  assert('Math.cbrt') do
+    num = [-2.0, -1.0, 0.0, 1.0, 2.0]
+    cub = [-8, -1, 0, 1, 8]
+    result = true
+    cub.each_with_index do |v,i|
+      result &= check_float(Math.cbrt(v), num[i])
+    end
+    result
   end
-  result
-end
 
-assert('Math.cbrt') do
-  num = [-2.0, -1.0, 0.0, 1.0, 2.0]
-  cub = [-8, -1, 0, 1, 8]
-  result = true
-  cub.each_with_index do |v,i|
-    result &= check_float(Math.cbrt(v), num[i])
+  assert('Math.hypot') do
+    check_float(Math.hypot(3, 4), 5.0)
   end
-  result
-end
 
-assert('Math.hypot') do
-  check_float(Math.hypot(3, 4), 5.0)
-end
+  assert('Math.frexp 1234') do
+    n = 1234
+    fraction, exponent = Math.frexp(n)
+    check_float(Math.ldexp(fraction, exponent), n)
+  end
 
-assert('Math.frexp 1234') do
-  n = 1234
-  fraction, exponent = Math.frexp(n)
-  check_float(Math.ldexp(fraction, exponent), n)
-end
+  assert('Math.erf 1') do
+    check_float(Math.erf(1), 0.842700792949715)
+  end
 
-assert('Math.erf 1') do
-  check_float(Math.erf(1), 0.842700792949715)
+  assert('Math.erfc 1') do
+    check_float(Math.erfc(1), 0.157299207050285)
+  end
 end
 
-assert('Math.erfc 1') do
-  check_float(Math.erfc(1), 0.157299207050285)
-end
diff --git a/test/t/struct.rb b/test/t/struct.rb
index 5a74c6205..fff02ee56 100644
--- a/test/t/struct.rb
+++ b/test/t/struct.rb
@@ -1,61 +1,64 @@
 ##
 # Struct ISO Test
 
-assert('Struct', '15.2.18') do
-  Struct.class == Class
-end
+if Object.const_defined?(:Struct)
+  assert('Struct', '15.2.18') do
+    Struct.class == Class
+  end
 
-assert('Struct superclass', '15.2.18.2') do
-  Struct.superclass == Object
-end
+  assert('Struct superclass', '15.2.18.2') do
+    Struct.superclass == Object
+  end
 
-assert('Struct.new', '15.2.18.3.1') do
-  c = Struct.new(:m1, :m2)
-  c.superclass == Struct and
-    c.members == [:m1,:m2]
-end
+  assert('Struct.new', '15.2.18.3.1') do
+    c = Struct.new(:m1, :m2)
+    c.superclass == Struct and
+      c.members == [:m1,:m2]
+  end
 
-assert('Struct#[]', '15.2.18.4.2') do
-  c = Struct.new(:m1, :m2)
-  cc = c.new(1,2)
-  cc[:m1] == 1 and cc["m2"] == 2
-end
+  assert('Struct#[]', '15.2.18.4.2') do
+    c = Struct.new(:m1, :m2)
+    cc = c.new(1,2)
+    cc[:m1] == 1 and cc["m2"] == 2
+  end
 
-assert('Struct#[]=', '15.2.18.4.3') do
-  c = Struct.new(:m1, :m2)
-  cc = c.new(1,2)
-  cc[:m1] = 3
-  cc[:m1] == 3
-end
+  assert('Struct#[]=', '15.2.18.4.3') do
+    c = Struct.new(:m1, :m2)
+    cc = c.new(1,2)
+    cc[:m1] = 3
+    cc[:m1] == 3
+  end
 
-assert('Struct#each', '15.2.18.4.4') do
-  c = Struct.new(:m1, :m2)
-  cc = c.new(1,2)
-  a = []
-  cc.each{|x|
-    a << x
-  }
-  a[0] == 1 and a[1] == 2
-end
+  assert('Struct#each', '15.2.18.4.4') do
+    c = Struct.new(:m1, :m2)
+    cc = c.new(1,2)
+    a = []
+    cc.each{|x|
+      a << x
+    }
+    a[0] == 1 and a[1] == 2
+  end
 
-assert('Struct#each_pair', '15.2.18.4.5') do
-  c = Struct.new(:m1, :m2)
-  cc = c.new(1,2)
-  a = []
-  cc.each_pair{|k,v|
-    a << [k,v]
-  }
-  a[0] == [:m1, 1] and a[1] == [:m2, 2]
-end
+  assert('Struct#each_pair', '15.2.18.4.5') do
+    c = Struct.new(:m1, :m2)
+    cc = c.new(1,2)
+    a = []
+    cc.each_pair{|k,v|
+      a << [k,v]
+    }
+    a[0] == [:m1, 1] and a[1] == [:m2, 2]
+  end
 
-assert('Struct#members', '15.2.18.4.6') do
-  c = Struct.new(:m1, :m2)
-  cc = c.new(1,2)
-  cc.members == [:m1,:m2]
-end
+  assert('Struct#members', '15.2.18.4.6') do
+    c = Struct.new(:m1, :m2)
+    cc = c.new(1,2)
+    cc.members == [:m1,:m2]
+  end
 
-assert('Struct#select', '15.2.18.4.7') do
-  c = Struct.new(:m1, :m2)
-  cc = c.new(1,2)
-  cc.select{|v| v % 2 == 0} == [2]
+  assert('Struct#select', '15.2.18.4.7') do
+    c = Struct.new(:m1, :m2)
+    cc = c.new(1,2)
+    cc.select{|v| v % 2 == 0} == [2]
+  end
 end
+
diff --git a/test/t/time.rb b/test/t/time.rb
index 045c5b185..6140be1a8 100644
--- a/test/t/time.rb
+++ b/test/t/time.rb
@@ -1,189 +1,191 @@
 ##
 # Time ISO Test
 
-assert('Time.new', '15.2.3.3.3') do
-  Time.new.class == Time
-end
+if Object.const_defined?(:Time)
+  assert('Time.new', '15.2.3.3.3') do
+    Time.new.class == Time
+  end
 
-assert('Time', '15.2.19') do
-  Time.class == Class
-end
+  assert('Time', '15.2.19') do
+    Time.class == Class
+  end
 
-assert('Time superclass', '15.2.19.2') do
-  Time.superclass == Object
-end
+  assert('Time superclass', '15.2.19.2') do
+    Time.superclass == Object
+  end
 
-assert('Time.at', '15.2.19.6.1') do
-  Time.at(1300000000.0)
-end
+  assert('Time.at', '15.2.19.6.1') do
+    Time.at(1300000000.0)
+  end
 
-assert('Time.gm', '15.2.19.6.2') do
-  Time.gm(2012, 12, 23)
-end
+  assert('Time.gm', '15.2.19.6.2') do
+    Time.gm(2012, 12, 23)
+  end
 
-assert('Time.local', '15.2.19.6.3') do
-  Time.local(2012, 12, 23)
-end
+  assert('Time.local', '15.2.19.6.3') do
+    Time.local(2012, 12, 23)
+  end
 
-assert('Time.mktime', '15.2.19.6.4') do
-  Time.mktime(2012, 12, 23)
-end
+  assert('Time.mktime', '15.2.19.6.4') do
+    Time.mktime(2012, 12, 23)
+  end
 
-assert('Time.now', '15.2.19.6.5') do
-  Time.now.class == Time
-end
+  assert('Time.now', '15.2.19.6.5') do
+    Time.now.class == Time
+  end
 
-assert('Time.utc', '15.2.19.6.6') do
-  Time.utc(2012, 12, 23)
-end
+  assert('Time.utc', '15.2.19.6.6') do
+    Time.utc(2012, 12, 23)
+  end
 
-assert('Time#+', '15.2.19.7.1') do
-  t1 = Time.at(1300000000.0)
-  t2 = t1.+(60)
+  assert('Time#+', '15.2.19.7.1') do
+    t1 = Time.at(1300000000.0)
+    t2 = t1.+(60)
 
-  t2.utc.asctime == "Sun Mar 13 07:07:40 UTC 2011"
-end
+    t2.utc.asctime == "Sun Mar 13 07:07:40 UTC 2011"
+  end
 
-assert('Time#-', '15.2.19.7.2') do
-  t1 = Time.at(1300000000.0)
-  t2 = t1.-(60)
+  assert('Time#-', '15.2.19.7.2') do
+    t1 = Time.at(1300000000.0)
+    t2 = t1.-(60)
 
-  t2.utc.asctime == "Sun Mar 13 07:05:40 UTC 2011"
-end
+    t2.utc.asctime == "Sun Mar 13 07:05:40 UTC 2011"
+  end
 
-assert('Time#<=>', '15.2.19.7.3') do
-  t1 = Time.at(1300000000.0)
-  t2 = Time.at(1400000000.0)
-  t3 = Time.at(1500000000.0)
+  assert('Time#<=>', '15.2.19.7.3') do
+    t1 = Time.at(1300000000.0)
+    t2 = Time.at(1400000000.0)
+    t3 = Time.at(1500000000.0)
 
-  t2.<=>(t1) == 1 and
-    t2.<=>(t2) == 0 and
-    t2.<=>(t3) == -1 and
-    t2.<=>(nil) == nil
-end
+    t2.<=>(t1) == 1 and
+      t2.<=>(t2) == 0 and
+      t2.<=>(t3) == -1 and
+      t2.<=>(nil) == nil
+  end
 
-assert('Time#asctime', '15.2.19.7.4') do
-  Time.at(1300000000.0).utc.asctime == "Sun Mar 13 07:06:40 UTC 2011"
-end
+  assert('Time#asctime', '15.2.19.7.4') do
+    Time.at(1300000000.0).utc.asctime == "Sun Mar 13 07:06:40 UTC 2011"
+  end
 
-assert('Time#ctime', '15.2.19.7.5') do
-  Time.at(1300000000.0).utc.ctime == "Sun Mar 13 07:06:40 UTC 2011"
-end
+  assert('Time#ctime', '15.2.19.7.5') do
+    Time.at(1300000000.0).utc.ctime == "Sun Mar 13 07:06:40 UTC 2011"
+  end
 
-assert('Time#day', '15.2.19.7.6') do
-  Time.gm(2012, 12, 23).day == 23
-end
+  assert('Time#day', '15.2.19.7.6') do
+    Time.gm(2012, 12, 23).day == 23
+  end
 
-assert('Time#dst?', '15.2.19.7.7') do
-  not Time.gm(2012, 12, 23).utc.dst?
-end
+  assert('Time#dst?', '15.2.19.7.7') do
+    not Time.gm(2012, 12, 23).utc.dst?
+  end
 
-assert('Time#getgm', '15.2.19.7.8') do
-  Time.at(1300000000.0).getgm.asctime == "Sun Mar 13 07:06:40 UTC 2011"
-end
+  assert('Time#getgm', '15.2.19.7.8') do
+    Time.at(1300000000.0).getgm.asctime == "Sun Mar 13 07:06:40 UTC 2011"
+  end
 
-assert('Time#getlocal', '15.2.19.7.9') do
-  t1 = Time.at(1300000000.0)
-  t2 = Time.at(1300000000.0)
-  t3 = t1.getlocal
+  assert('Time#getlocal', '15.2.19.7.9') do
+    t1 = Time.at(1300000000.0)
+    t2 = Time.at(1300000000.0)
+    t3 = t1.getlocal
 
-  t1 == t3 and t3 == t2.getlocal
-end
+    t1 == t3 and t3 == t2.getlocal
+  end
 
-assert('Time#getutc', '15.2.19.7.10') do
-  Time.at(1300000000.0).getutc.asctime == "Sun Mar 13 07:06:40 UTC 2011"
-end
+  assert('Time#getutc', '15.2.19.7.10') do
+    Time.at(1300000000.0).getutc.asctime == "Sun Mar 13 07:06:40 UTC 2011"
+  end
 
-assert('Time#gmt?', '15.2.19.7.11') do
-  Time.at(1300000000.0).utc.gmt?
-end
+  assert('Time#gmt?', '15.2.19.7.11') do
+    Time.at(1300000000.0).utc.gmt?
+  end
 
-# ATM not implemented
-# assert('Time#gmt_offset', '15.2.19.7.12') do
+  # ATM not implemented
+  # assert('Time#gmt_offset', '15.2.19.7.12') do
 
-assert('Time#gmtime', '15.2.19.7.13') do
-  Time.at(1300000000.0).gmtime
-end
+  assert('Time#gmtime', '15.2.19.7.13') do
+    Time.at(1300000000.0).gmtime
+  end
 
-# ATM not implemented
-# assert('Time#gmtoff', '15.2.19.7.14') do
+  # ATM not implemented
+  # assert('Time#gmtoff', '15.2.19.7.14') do
 
-assert('Time#hour', '15.2.19.7.15') do
-  Time.gm(2012, 12, 23, 7, 6).hour == 7
-end
+  assert('Time#hour', '15.2.19.7.15') do
+    Time.gm(2012, 12, 23, 7, 6).hour == 7
+  end
 
-# ATM doesn't really work
-# assert('Time#initialize', '15.2.19.7.16') do
+  # ATM doesn't really work
+  # assert('Time#initialize', '15.2.19.7.16') do
 
-assert('Time#initialize_copy', '15.2.19.7.17') do
-  time_tmp_2 = Time.at(7.0e6)
-  time_tmp_2.clone == time_tmp_2
-end
+  assert('Time#initialize_copy', '15.2.19.7.17') do
+    time_tmp_2 = Time.at(7.0e6)
+    time_tmp_2.clone == time_tmp_2
+  end
 
-assert('Time#localtime', '15.2.19.7.18') do
-  t1 = Time.at(1300000000.0)
-  t2 = Time.at(1300000000.0)
+  assert('Time#localtime', '15.2.19.7.18') do
+    t1 = Time.at(1300000000.0)
+    t2 = Time.at(1300000000.0)
 
-  t1.localtime
-  t1 == t2.getlocal
-end
+    t1.localtime
+    t1 == t2.getlocal
+  end
 
-assert('Time#mday', '15.2.19.7.19') do
-  Time.gm(2012, 12, 23).mday == 23
-end
+  assert('Time#mday', '15.2.19.7.19') do
+    Time.gm(2012, 12, 23).mday == 23
+  end
 
-assert('Time#min', '15.2.19.7.20') do
-  Time.gm(2012, 12, 23, 7, 6).min == 6
-end
+  assert('Time#min', '15.2.19.7.20') do
+    Time.gm(2012, 12, 23, 7, 6).min == 6
+  end
 
-assert('Time#mon', '15.2.19.7.21') do
-  Time.gm(2012, 12, 23).mon == 12
-end
+  assert('Time#mon', '15.2.19.7.21') do
+    Time.gm(2012, 12, 23).mon == 12
+  end
 
-assert('Time#month', '15.2.19.7.22') do
-  Time.gm(2012, 12, 23).month == 12
-end
+  assert('Time#month', '15.2.19.7.22') do
+    Time.gm(2012, 12, 23).month == 12
+  end
 
-assert('Times#sec', '15.2.19.7.23') do
-  Time.gm(2012, 12, 23, 7, 6, 40).sec == 40
-end
+  assert('Times#sec', '15.2.19.7.23') do
+    Time.gm(2012, 12, 23, 7, 6, 40).sec == 40
+  end
 
-assert('Time#to_f', '15.2.19.7.24') do
-  Time.at(1300000000.0).to_f == 1300000000.0
-end
+  assert('Time#to_f', '15.2.19.7.24') do
+    Time.at(1300000000.0).to_f == 1300000000.0
+  end
 
-assert('Time#to_i', '15.2.19.7.25') do
-  Time.at(1300000000.0).to_i == 1300000000
-end
+  assert('Time#to_i', '15.2.19.7.25') do
+    Time.at(1300000000.0).to_i == 1300000000
+  end
 
-assert('Time#usec', '15.2.19.7.26') do
-  Time.at(1300000000.0).usec == 0
-end
+  assert('Time#usec', '15.2.19.7.26') do
+    Time.at(1300000000.0).usec == 0
+  end
 
-assert('Time#utc', '15.2.19.7.27') do
-  Time.at(1300000000.0).utc
-end
+  assert('Time#utc', '15.2.19.7.27') do
+    Time.at(1300000000.0).utc
+  end
 
-assert('Time#utc?', '15.2.19.7.28') do
-  Time.at(1300000000.0).utc.utc?
-end
+  assert('Time#utc?', '15.2.19.7.28') do
+    Time.at(1300000000.0).utc.utc?
+  end
 
-# ATM not implemented
-# assert('Time#utc_offset', '15.2.19.7.29') do
+  # ATM not implemented
+  # assert('Time#utc_offset', '15.2.19.7.29') do
 
-assert('Time#wday', '15.2.19.7.30') do
-  Time.gm(2012, 12, 23).wday == 0
-end
+  assert('Time#wday', '15.2.19.7.30') do
+    Time.gm(2012, 12, 23).wday == 0
+  end
 
-assert('Time#yday', '15.2.19.7.31') do
-  Time.gm(2012, 12, 23).yday == 357
-end
+  assert('Time#yday', '15.2.19.7.31') do
+    Time.gm(2012, 12, 23).yday == 357
+  end
 
-assert('Time#year', '15.2.19.7.32') do
-  Time.gm(2012, 12, 23).year == 2012
-end
+  assert('Time#year', '15.2.19.7.32') do
+    Time.gm(2012, 12, 23).year == 2012
+  end
 
-assert('Time#zone', '15.2.19.7.33') do
-  Time.at(1300000000.0).utc.zone == 'UTC'
+  assert('Time#zone', '15.2.19.7.33') do
+    Time.at(1300000000.0).utc.zone == 'UTC'
+  end
 end