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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes.rb', __FILE__)
describe "String#upto" do
it "passes successive values, starting at self and ending at other_string, to the block" do
a = []
"*+".upto("*3") { |s| a << s }
a.should == ["*+", "*,", "*-", "*.", "*/", "*0", "*1", "*2", "*3"]
end
it "calls the block once even when start eqals stop" do
a = []
"abc".upto("abc") { |s| a << s }
a.should == ["abc"]
end
# This is weird (in 1.8), but MRI behaves like that
ruby_version_is '' ... '1.9' do
it "calls block with self even if self is less than stop but stop length is less than self length" do
a = []
"25".upto("5") { |s| a << s }
a.should == ["25"]
end
end
ruby_version_is '1.9' do
it "doesn't call block with self even if self is less than stop but stop length is less than self length" do
a = []
"25".upto("5") { |s| a << s }
a.should == []
end
end
it "doesn't call block if stop is less than self and stop length is less than self length" do
a = []
"25".upto("1") { |s| a << s }
a.should == []
end
it "doesn't call the block if self is greater than stop" do
a = []
"5".upto("2") { |s| a << s }
a.should == []
end
it "stops iterating as soon as the current value's character count gets higher than stop's" do
a = []
"96".upto("AA") { |s| a << s }
a.should == ["96", "97", "98", "99"]
end
it "returns self" do
"abc".upto("abd") { }.should == "abc"
"5".upto("2") { |i| i }.should == "5"
end
it "tries to convert other to string using to_str" do
other = mock('abd')
def other.to_str() "abd" end
a = []
"abc".upto(other) { |s| a << s }
a.should == ["abc", "abd"]
end
it "raises a TypeError if other can't be converted to a string" do
lambda { "abc".upto(123) { } }.should raise_error(TypeError)
lambda { "abc".upto(mock('x')){ } }.should raise_error(TypeError)
end
ruby_version_is ''...'1.9' do
it "raises a TypeError on symbols" do
lambda { "abc".upto(:def) { } }.should raise_error(TypeError)
end
it "raises a LocalJumpError if other is a string but no block was given" do
lambda { "abc".upto("def") }.should raise_error(LocalJumpError)
end
it "uses succ even for single letters" do
a = []
"9".upto("A"){ |s| a << s}
a.should == ["9"]
end
end
ruby_version_is '1.9' do
it "does not work with symbols" do
lambda { "a".upto(:c).to_a }.should raise_error(TypeError)
end
it "returns an enumerator when no block given" do
enum = "aaa".upto("baa", true)
enum.should be_an_instance_of(enumerator_class)
enum.count.should == 26**2
end
it "uses the ASCII map for single letters" do
a = []
"9".upto("A"){ |s| a << s}
a.should == ["9", ":", ";", "<", "=", ">", "?", "@", "A"]
end
end
ruby_version_is '1.8.7' do
it "stops before the last value if exclusive" do
a = []
"a".upto("d", true) { |s| a << s}
a.should == ["a", "b", "c"]
end
end
end
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