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Diffstat (limited to 'spec/rubyspec/core/kernel/gsub_spec.rb')
-rw-r--r-- | spec/rubyspec/core/kernel/gsub_spec.rb | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/spec/rubyspec/core/kernel/gsub_spec.rb b/spec/rubyspec/core/kernel/gsub_spec.rb new file mode 100644 index 0000000000..005ed0063d --- /dev/null +++ b/spec/rubyspec/core/kernel/gsub_spec.rb @@ -0,0 +1,96 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +# FIXME: These methods exist only when the -n or -p option is passed to +# ruby, but we currently don't have a way of specifying that. +ruby_version_is ""..."1.9" do + describe "Kernel#gsub" do + it "is a private method" do + Kernel.should have_private_instance_method(:gsub) + end + + it "raises a TypeError if $_ is not a String" do + lambda { + $_ = 123 + gsub(/./, "!") + }.should raise_error(TypeError) + end + + it "when matches sets $_ to a new string, leaving the former value unaltered" do + orig_value = $_ = "hello" + gsub("ello", "ola") + $_.should_not equal(orig_value) + $_.should == "hola" + orig_value.should == "hello" + end + + it "returns a string with the same contents as $_ after the operation" do + $_ = "bye" + gsub("non-match", "?").should == "bye" + + orig_value = $_ = "bye" + gsub(/$/, "!").should == "bye!" + orig_value.should == "bye" + end + + it "accepts Regexps as patterns" do + $_ = "food" + gsub(/.$/, "l") + $_.should == "fool" + end + + it "accepts Strings as patterns, treated literally" do + $_ = "hello, world." + gsub(".", "!") + $_.should == "hello, world!" + end + + it "accepts objects which respond to #to_str as patterns and treats them as strings" do + $_ = "hello, world." + stringlike = mock(".") + stringlike.should_receive(:to_str).and_return(".") + gsub(stringlike, "!") + $_.should == "hello, world!" + end + end + + describe "Kernel#gsub with a pattern and replacement" do + it "accepts strings for replacement" do + $_ = "hello" + gsub(/./, ".") + $_.should == "....." + end + + it "accepts objects which respond to #to_str for replacement" do + o = mock("o") + o.should_receive(:to_str).and_return("o") + $_ = "ping" + gsub("i", o) + $_.should == "pong" + end + + it "replaces \\1 sequences with the regexp's corresponding capture" do + $_ = "hello!" + gsub(/(.)(.)/, '\2\1') + $_.should == "ehll!o" + end + end + + describe "Kernel#gsub with pattern and block" do + it "acts similarly to using $_.gsub" do + $_ = "olleh dlrow" + gsub(/(\w+)/){ $1.reverse } + $_.should == "hello world" + end + end + + describe "Kernel#gsub!" do + it "is a private method" do + Kernel.should have_private_instance_method(:gsub!) + end + end + + describe "Kernel.gsub!" do + it "needs to be reviewed for spec completeness" + end +end |