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104 lines
2.8 KiB
Ruby
104 lines
2.8 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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describe "String#upto" do
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it "passes successive values, starting at self and ending at other_string, to the block" do
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a = []
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"*+".upto("*3") { |s| a << s }
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a.should == ["*+", "*,", "*-", "*.", "*/", "*0", "*1", "*2", "*3"]
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end
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it "calls the block once even when start equals stop" do
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a = []
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"abc".upto("abc") { |s| a << s }
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a.should == ["abc"]
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end
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it "doesn't call block with self even if self is less than stop but stop length is less than self length" do
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a = []
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"25".upto("5") { |s| a << s }
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a.should == []
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end
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it "doesn't call block if stop is less than self and stop length is less than self length" do
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a = []
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"25".upto("1") { |s| a << s }
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a.should == []
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end
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it "doesn't call the block if self is greater than stop" do
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a = []
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"5".upto("2") { |s| a << s }
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a.should == []
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end
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it "stops iterating as soon as the current value's character count gets higher than stop's" do
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a = []
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"96".upto("AA") { |s| a << s }
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a.should == ["96", "97", "98", "99"]
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end
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it "returns self" do
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"abc".upto("abd") { }.should == "abc"
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"5".upto("2") { |i| i }.should == "5"
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end
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it "tries to convert other to string using to_str" do
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other = mock('abd')
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def other.to_str() "abd" end
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a = []
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"abc".upto(other) { |s| a << s }
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a.should == ["abc", "abd"]
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end
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it "raises a TypeError if other can't be converted to a string" do
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-> { "abc".upto(123) { } }.should raise_error(TypeError)
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-> { "abc".upto(mock('x')){ } }.should raise_error(TypeError)
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end
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it "does not work with symbols" do
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-> { "a".upto(:c).to_a }.should raise_error(TypeError)
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end
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it "returns non-alphabetic characters in the ASCII range for single letters" do
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"9".upto("A").to_a.should == ["9", ":", ";", "<", "=", ">", "?", "@", "A"]
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"Z".upto("a").to_a.should == ["Z", "[", "\\", "]", "^", "_", "`", "a"]
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"z".upto("~").to_a.should == ["z", "{", "|", "}", "~"]
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end
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it "stops before the last value if exclusive" do
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a = []
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"a".upto("d", true) { |s| a << s}
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a.should == ["a", "b", "c"]
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end
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it "works with non-ASCII ranges" do
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a = []
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'Σ'.upto('Ω') { |s| a << s }
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a.should == ["Σ", "Τ", "Υ", "Φ", "Χ", "Ψ", "Ω"]
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end
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describe "on sequence of numbers" do
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it "calls the block as Integer#upto" do
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"8".upto("11").to_a.should == 8.upto(11).map(&:to_s)
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end
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end
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describe "when no block is given" do
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it "returns an enumerator" do
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enum = "aaa".upto("baa", true)
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enum.should be_an_instance_of(Enumerator)
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enum.count.should == 26**2
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end
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describe "returned Enumerator" do
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describe "size" do
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it "should return nil" do
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"a".upto("b").size.should == nil
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end
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end
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end
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end
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end
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