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require_relative '../../spec_helper'
describe "Warning.warn" do
it "complains" do
-> {
Warning.warn("Chunky bacon!")
}.should complain("Chunky bacon!")
end
it "does not add a newline" do
ruby_exe("Warning.warn('test')", args: "2>&1").should == "test"
end
it "returns nil" do
ruby_exe("p Warning.warn('test')", args: "2>&1").should == "testnil\n"
end
it "extends itself" do
Warning.singleton_class.ancestors.should include(Warning)
end
it "has Warning as the method owner" do
ruby_exe("p Warning.method(:warn).owner").should == "Warning\n"
end
it "can be overridden" do
code = <<-RUBY
$stdout.sync = true
$stderr.sync = true
def Warning.warn(msg)
if msg.start_with?("A")
puts msg.upcase
else
super
end
end
Warning.warn("A warning!")
Warning.warn("warning from stderr\n")
RUBY
ruby_exe(code, args: "2>&1").should == %Q[A WARNING!\nwarning from stderr\n]
end
it "is called by parser warnings" do
Warning.should_receive(:warn)
verbose = $VERBOSE
$VERBOSE = false
begin
eval "{ key: :value, key: :value2 }"
ensure
$VERBOSE = verbose
end
end
it "is called by Kernel.warn with nil category keyword" do
Warning.should_receive(:warn).with("Chunky bacon!\n", category: nil)
verbose = $VERBOSE
$VERBOSE = false
begin
Kernel.warn("Chunky bacon!")
ensure
$VERBOSE = verbose
end
end
it "is called by Kernel.warn with given category keyword converted to a symbol" do
Warning.should_receive(:warn).with("Chunky bacon!\n", category: :deprecated)
verbose = $VERBOSE
$VERBOSE = false
begin
Kernel.warn("Chunky bacon!", category: "deprecated")
ensure
$VERBOSE = verbose
end
end
it "warns when category is :deprecated and Warning[:deprecated] is true" do
warn_deprecated = Warning[:deprecated]
Warning[:deprecated] = true
begin
-> {
Warning.warn("foo", category: :deprecated)
}.should complain("foo")
ensure
Warning[:deprecated] = warn_deprecated
end
end
it "warns when category is :experimental and Warning[:experimental] is true" do
warn_experimental = Warning[:experimental]
Warning[:experimental] = true
begin
-> {
Warning.warn("foo", category: :experimental)
}.should complain("foo")
ensure
Warning[:experimental] = warn_experimental
end
end
it "doesn't print message when category is :deprecated but Warning[:deprecated] is false" do
warn_deprecated = Warning[:deprecated]
Warning[:deprecated] = false
begin
-> {
Warning.warn("foo", category: :deprecated)
}.should_not complain
ensure
Warning[:deprecated] = warn_deprecated
end
end
it "doesn't print message when category is :experimental but Warning[:experimental] is false" do
warn_experimental = Warning[:experimental]
Warning[:experimental] = false
begin
-> {
Warning.warn("foo", category: :experimental)
}.should_not complain
ensure
Warning[:experimental] = warn_experimental
end
end
it "prints the message when VERBOSE is false" do
-> { Warning.warn("foo") }.should complain("foo")
end
it "prints the message when VERBOSE is nil" do
-> { Warning.warn("foo") }.should complain("foo", verbose: nil)
end
it "prints the message when VERBOSE is true" do
-> { Warning.warn("foo") }.should complain("foo", verbose: true)
end
end
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