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-rw-r--r--spec/ruby/library/prime/each_spec.rb247
1 files changed, 122 insertions, 125 deletions
diff --git a/spec/ruby/library/prime/each_spec.rb b/spec/ruby/library/prime/each_spec.rb
index c89e871582..b99cf7cf0e 100644
--- a/spec/ruby/library/prime/each_spec.rb
+++ b/spec/ruby/library/prime/each_spec.rb
@@ -1,170 +1,167 @@
require_relative '../../spec_helper'
+require 'prime'
-ruby_version_is ""..."3.1" do
- require 'prime'
-
- describe :prime_each, shared: true do
- before :each do
- ScratchPad.record []
- end
+describe :prime_each, shared: true do
+ before :each do
+ ScratchPad.record []
+ end
- it "enumerates primes" do
- primes = Prime.instance
- result = []
+ it "enumerates primes" do
+ primes = Prime.instance
+ result = []
- primes.each { |p|
- result << p
- break if p > 10
- }
+ primes.each { |p|
+ result << p
+ break if p > 10
+ }
- result.should == [2, 3, 5, 7, 11]
- end
+ result.should == [2, 3, 5, 7, 11]
+ end
- it "yields ascending primes to the block" do
- previous = 1
- @object.each do |prime|
- break if prime > 1000
- ScratchPad << prime
- prime.should > previous
- previous = prime
- end
-
- all_prime = true
- ScratchPad.recorded.all? do |prime|
- all_prime &&= (2..Math.sqrt(prime)).all? { |d| prime % d != 0 }
- end
-
- all_prime.should be_true
+ it "yields ascending primes to the block" do
+ previous = 1
+ @object.each do |prime|
+ break if prime > 1000
+ ScratchPad << prime
+ prime.should > previous
+ previous = prime
end
- it "returns the last evaluated expression in the passed block" do
- @object.each { break :value }.should equal(:value)
+ all_prime = true
+ ScratchPad.recorded.all? do |prime|
+ all_prime &&= (2..Math.sqrt(prime)).all? { |d| prime % d != 0 }
end
- describe "when not passed a block" do
- before :each do
- @prime_enum = @object.each
- end
-
- it "returns an object that is Enumerable" do
- @prime_enum.each.should be_kind_of(Enumerable)
- end
-
- it "returns an object that responds to #with_index" do
- @prime_enum.should respond_to(:with_index)
- end
+ all_prime.should be_true
+ end
- it "returns an object that responds to #with_object" do
- @prime_enum.should respond_to(:with_object)
- end
+ it "returns the last evaluated expression in the passed block" do
+ @object.each { break :value }.should equal(:value)
+ end
- it "returns an object that responds to #next" do
- @prime_enum.should respond_to(:next)
- end
+ describe "when not passed a block" do
+ before :each do
+ @prime_enum = @object.each
+ end
- it "returns an object that responds to #rewind" do
- @prime_enum.should respond_to(:rewind)
- end
+ it "returns an object that is Enumerable" do
+ @prime_enum.each.should be_kind_of(Enumerable)
+ end
- it "yields primes starting at 2 independent of prior enumerators" do
- @prime_enum.next.should == 2
- @prime_enum.next.should == 3
+ it "returns an object that responds to #with_index" do
+ @prime_enum.should respond_to(:with_index)
+ end
- @object.each { |prime| break prime }.should == 2
- end
+ it "returns an object that responds to #with_object" do
+ @prime_enum.should respond_to(:with_object)
+ end
- it "returns an enumerator that yields previous primes when #rewind is called" do
- @prime_enum.next.should == 2
- @prime_enum.next.should == 3
- @prime_enum.rewind
- @prime_enum.next.should == 2
- end
+ it "returns an object that responds to #next" do
+ @prime_enum.should respond_to(:next)
+ end
- it "returns independent enumerators" do
- enum = @object.each
- enum.next.should == 2
- enum.next.should == 3
+ it "returns an object that responds to #rewind" do
+ @prime_enum.should respond_to(:rewind)
+ end
- @prime_enum.next.should == 2
+ it "yields primes starting at 2 independent of prior enumerators" do
+ @prime_enum.next.should == 2
+ @prime_enum.next.should == 3
- enum.next.should == 5
- end
+ @object.each { |prime| break prime }.should == 2
end
- end
- describe :prime_each_with_arguments, shared: true do
- before :each do
- ScratchPad.record []
+ it "returns an enumerator that yields previous primes when #rewind is called" do
+ @prime_enum.next.should == 2
+ @prime_enum.next.should == 3
+ @prime_enum.rewind
+ @prime_enum.next.should == 2
end
- it "yields ascending primes less than or equal to the argument" do
- bound = 1000
- previous = 1
- @object.each(bound) do |prime|
- ScratchPad << prime
- prime.should > previous
- previous = prime
- end
+ it "returns independent enumerators" do
+ enum = @object.each
+ enum.next.should == 2
+ enum.next.should == 3
- ScratchPad.recorded.all? do |prime|
- (2..Math.sqrt(prime)).all? { |d| prime % d != 0 }
- end.should be_true
+ @prime_enum.next.should == 2
- ScratchPad.recorded.all? { |prime| prime <= bound }.should be_true
+ enum.next.should == 5
end
+ end
+end
- it "returns nil when no prime is generated" do
- @object.each(1) { :value }.should be_nil
- end
+describe :prime_each_with_arguments, shared: true do
+ before :each do
+ ScratchPad.record []
+ end
- it "yields primes starting at 2 independent of prior enumeration" do
- @object.each(10) { |prime| prime }.should == 7
- @object.each(10) { |prime| break prime }.should == 2
+ it "yields ascending primes less than or equal to the argument" do
+ bound = 1000
+ previous = 1
+ @object.each(bound) do |prime|
+ ScratchPad << prime
+ prime.should > previous
+ previous = prime
end
- it "accepts a pseudo-prime generator as the second argument" do
- generator = mock('very bad pseudo-prime generator')
- generator.should_receive(:upper_bound=).with(100)
- generator.should_receive(:each).and_yield(2).and_yield(3).and_yield(4)
-
- @object.each(100, generator) { |prime| ScratchPad << prime }
- ScratchPad.recorded.should == [2, 3, 4]
- end
+ ScratchPad.recorded.all? do |prime|
+ (2..Math.sqrt(prime)).all? { |d| prime % d != 0 }
+ end.should be_true
- describe "when not passed a block" do
- it "returns an object that returns primes less than or equal to the bound" do
- bound = 100
- @object.each(bound).all? { |prime| prime <= bound }.should be_true
- end
- end
+ ScratchPad.recorded.all? { |prime| prime <= bound }.should be_true
end
- describe "Prime.each" do
- it_behaves_like :prime_each, :each, Prime
+ it "returns nil when no prime is generated" do
+ @object.each(1) { :value }.should be_nil
end
- describe "Prime.each" do
- it_behaves_like :prime_each_with_arguments, :each, Prime
+ it "yields primes starting at 2 independent of prior enumeration" do
+ @object.each(10) { |prime| prime }.should == 7
+ @object.each(10) { |prime| break prime }.should == 2
end
- describe "Prime#each with Prime.instance" do
- it_behaves_like :prime_each, :each, Prime.instance
- end
+ it "accepts a pseudo-prime generator as the second argument" do
+ generator = mock('very bad pseudo-prime generator')
+ generator.should_receive(:upper_bound=).with(100)
+ generator.should_receive(:each).and_yield(2).and_yield(3).and_yield(4)
- describe "Prime#each with Prime.instance" do
- it_behaves_like :prime_each_with_arguments, :each, Prime.instance
+ @object.each(100, generator) { |prime| ScratchPad << prime }
+ ScratchPad.recorded.should == [2, 3, 4]
end
- describe "Prime#each with Prime.instance" do
- before :each do
- @object = Prime.instance
+ describe "when not passed a block" do
+ it "returns an object that returns primes less than or equal to the bound" do
+ bound = 100
+ @object.each(bound).all? { |prime| prime <= bound }.should be_true
end
+ end
+end
- it_behaves_like :prime_each, :each
+describe "Prime.each" do
+ it_behaves_like :prime_each, :each, Prime
+end
- it "resets the enumerator with each call" do
- @object.each { |prime| break if prime > 10 }
- @object.each { |prime| break prime }.should == 2
- end
+describe "Prime.each" do
+ it_behaves_like :prime_each_with_arguments, :each, Prime
+end
+
+describe "Prime#each with Prime.instance" do
+ it_behaves_like :prime_each, :each, Prime.instance
+end
+
+describe "Prime#each with Prime.instance" do
+ it_behaves_like :prime_each_with_arguments, :each, Prime.instance
+end
+
+describe "Prime#each with Prime.instance" do
+ before :each do
+ @object = Prime.instance
+ end
+
+ it_behaves_like :prime_each, :each
+
+ it "resets the enumerator with each call" do
+ @object.each { |prime| break if prime > 10 }
+ @object.each { |prime| break prime }.should == 2
end
end