Update to ruby/spec@28a728b

spec/ruby/core/env/fetch_spec.rb

@@ -2,14 +2,20 @@ require_relative '../../spec_helper'
 require_relative '../../shared/hash/key_error'
 
 describe "ENV.fetch" do
+  before :each do
+    @foo_saved = ENV.delete("foo")
+  end
+  after :each do
+    ENV["foo"] = @saved_foo
+  end
+
   it "returns a value" do
     ENV["foo"] = "bar"
     ENV.fetch("foo").should == "bar"
-    ENV.delete "foo"
   end
 
   it "raises a TypeError if the key is not a String" do
-    -> { ENV.fetch :should_never_be_set }.should raise_error(TypeError)
+    -> { ENV.fetch Object.new }.should raise_error(TypeError, "no implicit conversion of Object into String")
   end
 
   context "when the key is not found" do
@@ -23,20 +29,34 @@ describe "ENV.fetch" do
   end
 
   it "provides the given default parameter" do
-    ENV.fetch("should_never_be_set", "default").should == "default"
+    ENV.fetch("foo", "default").should == "default"
+  end
+
+  it "does not insist that the default be a String" do
+    ENV.fetch("foo", :default).should == :default
   end
 
   it "provides a default value from a block" do
-    ENV.fetch("should_never_be_set") { |k| "wanted #{k}" }.should == "wanted should_never_be_set"
+    ENV.fetch("foo") { |k| "wanted #{k}" }.should == "wanted foo"
+  end
+
+  it "does not insist that the block return a String" do
+    ENV.fetch("foo") { |k| k.to_sym }.should == :foo
   end
 
   it "warns on block and default parameter given" do
     -> do
-       ENV.fetch("should_never_be_set", "default") { 1 }.should == 1
+       ENV.fetch("foo", "default") { "bar" }.should == "bar"
     end.should complain(/block supersedes default value argument/)
   end
 
+  it "does not evaluate the block when key found" do
+    ENV["foo"] = "bar"
+    ENV.fetch("foo") { fail "should not get here"}.should == "bar"
+  end
+
   it "uses the locale encoding" do
-    ENV.fetch(ENV.keys.first).encoding.should == Encoding.find('locale')
+    ENV["foo"] = "bar"
+    ENV.fetch("foo").encoding.should == Encoding.find('locale')
   end
 end