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require_relative '../../spec_helper'
describe "String#force_encoding" do
it "accepts a String as the name of an Encoding" do
"abc".force_encoding('shift_jis').encoding.should == Encoding::Shift_JIS
end
describe "with a special encoding name" do
before :each do
@original_encoding = Encoding.default_internal
end
after :each do
Encoding.default_internal = @original_encoding
end
it "accepts valid special encoding names" do
Encoding.default_internal = "US-ASCII"
"abc".force_encoding("internal").encoding.should == Encoding::US_ASCII
end
it "defaults to BINARY if special encoding name is not set" do
Encoding.default_internal = nil
"abc".force_encoding("internal").encoding.should == Encoding::BINARY
end
end
it "accepts an Encoding instance" do
"abc".force_encoding(Encoding::SHIFT_JIS).encoding.should == Encoding::Shift_JIS
end
it "calls #to_str to convert an object to an encoding name" do
obj = mock("force_encoding")
obj.should_receive(:to_str).and_return("utf-8")
"abc".force_encoding(obj).encoding.should == Encoding::UTF_8
end
it "raises a TypeError if #to_str does not return a String" do
obj = mock("force_encoding")
obj.should_receive(:to_str).and_return(1)
-> { "abc".force_encoding(obj) }.should raise_error(TypeError)
end
it "raises a TypeError if passed nil" do
-> { "abc".force_encoding(nil) }.should raise_error(TypeError)
end
it "returns self" do
str = "abc"
str.force_encoding('utf-8').should equal(str)
end
it "sets the encoding even if the String contents are invalid in that encoding" do
str = "\u{9765}"
str.force_encoding('euc-jp')
str.encoding.should == Encoding::EUC_JP
str.valid_encoding?.should be_false
end
it "does not transcode self" do
str = "\u{8612}"
str.dup.force_encoding('utf-16le').should_not == str.encode('utf-16le')
end
it "raises a FrozenError if self is frozen" do
str = "abcd".freeze
-> { str.force_encoding(str.encoding) }.should raise_error(FrozenError)
end
end
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