mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
1d15d5f080
* Other ruby implementations use the spec/ruby directory. [Misc #13792] [ruby-core:82287] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
90 lines
2.3 KiB
Ruby
90 lines
2.3 KiB
Ruby
require File.expand_path('../../spec_helper', __FILE__)
|
|
|
|
describe "The || operator" do
|
|
it "evaluates to true if any of its operands are true" do
|
|
if false || true || nil
|
|
x = true
|
|
end
|
|
x.should == true
|
|
end
|
|
|
|
it "evaluated to false if all of its operands are false" do
|
|
if false || nil
|
|
x = true
|
|
end
|
|
x.should == nil
|
|
end
|
|
|
|
it "is evaluated before assignment operators" do
|
|
x = nil || true
|
|
x.should == true
|
|
end
|
|
|
|
it "has a lower precedence than the && operator" do
|
|
x = 1 || false && x = 2
|
|
x.should == 1
|
|
end
|
|
|
|
it "treats empty expressions as nil" do
|
|
(() || true).should be_true
|
|
(() || false).should be_false
|
|
(true || ()).should be_true
|
|
(false || ()).should be_nil
|
|
(() || ()).should be_nil
|
|
end
|
|
|
|
it "has a higher precedence than 'break' in 'break true || false'" do
|
|
# see also 'break true or false' below
|
|
lambda { break false || true }.call.should be_true
|
|
end
|
|
|
|
it "has a higher precedence than 'next' in 'next true || false'" do
|
|
lambda { next false || true }.call.should be_true
|
|
end
|
|
|
|
it "has a higher precedence than 'return' in 'return true || false'" do
|
|
lambda { return false || true }.call.should be_true
|
|
end
|
|
end
|
|
|
|
describe "The or operator" do
|
|
it "evaluates to true if any of its operands are true" do
|
|
x = nil
|
|
if false or true
|
|
x = true
|
|
end
|
|
x.should == true
|
|
end
|
|
|
|
it "is evaluated after variables are assigned" do
|
|
x = nil or true
|
|
x.should == nil
|
|
end
|
|
|
|
it "has a lower precedence than the || operator" do
|
|
x,y = nil
|
|
x = true || false or y = 1
|
|
y.should == nil
|
|
end
|
|
|
|
it "treats empty expressions as nil" do
|
|
(() or true).should be_true
|
|
(() or false).should be_false
|
|
(true or ()).should be_true
|
|
(false or ()).should be_nil
|
|
(() or ()).should be_nil
|
|
end
|
|
|
|
it "has a lower precedence than 'break' in 'break true or false'" do
|
|
# see also 'break true || false' above
|
|
lambda { eval "break true or false" }.should raise_error(SyntaxError, /void value expression/)
|
|
end
|
|
|
|
it "has a lower precedence than 'next' in 'next true or false'" do
|
|
lambda { eval "next true or false" }.should raise_error(SyntaxError, /void value expression/)
|
|
end
|
|
|
|
it "has a lower precedence than 'return' in 'return true or false'" do
|
|
lambda { eval "return true or false" }.should raise_error(SyntaxError, /void value expression/)
|
|
end
|
|
end
|