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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "String#insert with index, other" do
it "inserts other before the character at the given index" do
"abcd".insert(0, 'X').should == "Xabcd"
"abcd".insert(3, 'X').should == "abcXd"
"abcd".insert(4, 'X').should == "abcdX"
end
it "modifies self in place" do
a = "abcd"
a.insert(4, 'X').should == "abcdX"
a.should == "abcdX"
end
it "inserts after the given character on an negative count" do
"abcd".insert(-5, 'X').should == "Xabcd"
"abcd".insert(-3, 'X').should == "abXcd"
"abcd".insert(-1, 'X').should == "abcdX"
end
it "raises an IndexError if the index is beyond string" do
-> { "abcd".insert(5, 'X') }.should raise_error(IndexError)
-> { "abcd".insert(-6, 'X') }.should raise_error(IndexError)
end
it "converts index to an integer using to_int" do
other = mock('-3')
other.should_receive(:to_int).and_return(-3)
"abcd".insert(other, "XYZ").should == "abXYZcd"
end
it "converts other to a string using to_str" do
other = mock('XYZ')
other.should_receive(:to_str).and_return("XYZ")
"abcd".insert(-3, other).should == "abXYZcd"
end
it "raises a TypeError if other can't be converted to string" do
-> { "abcd".insert(-6, Object.new)}.should raise_error(TypeError)
-> { "abcd".insert(-6, []) }.should raise_error(TypeError)
-> { "abcd".insert(-6, mock('x')) }.should raise_error(TypeError)
end
it "raises a FrozenError if self is frozen" do
str = "abcd".freeze
-> { str.insert(4, '') }.should raise_error(FrozenError)
-> { str.insert(4, 'X') }.should raise_error(FrozenError)
end
it "inserts a character into a multibyte encoded string" do
"ありがとう".insert(1, 'ü').should == "あüりがとう"
end
it "returns a String in the compatible encoding" do
str = "".force_encoding(Encoding::US_ASCII)
str.insert(0, "ありがとう")
str.encoding.should == Encoding::UTF_8
end
it "raises an Encoding::CompatibilityError if the encodings are incompatible" do
pat = "ア".encode Encoding::EUC_JP
-> do
"あれ".insert 0, pat
end.should raise_error(Encoding::CompatibilityError)
end
it "should not call subclassed string methods" do
cls = Class.new(String) do
def replace(arg)
raise "should not call replace"
end
end
cls.new("abcd").insert(0, 'X').should == "Xabcd"
end
end
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