diff options
author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-09-20 20:18:52 +0000 |
commit | 1d15d5f08032acf1b7bceacbb450d617ff6e0931 (patch) | |
tree | a3785a79899302bc149e4a6e72f624ac27dc1f10 /spec/ruby/library/prime | |
parent | 75bfc6440d595bf339007f4fb280fd4d743e89c1 (diff) |
Move spec/rubyspec to spec/ruby for consistency
* Other ruby implementations use the spec/ruby directory.
[Misc #13792] [ruby-core:82287]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/ruby/library/prime')
-rw-r--r-- | spec/ruby/library/prime/each_spec.rb | 167 | ||||
-rw-r--r-- | spec/ruby/library/prime/instance_spec.rb | 21 | ||||
-rw-r--r-- | spec/ruby/library/prime/int_from_prime_division_spec.rb | 13 | ||||
-rw-r--r-- | spec/ruby/library/prime/integer/each_prime_spec.rb | 13 | ||||
-rw-r--r-- | spec/ruby/library/prime/integer/from_prime_division_spec.rb | 13 | ||||
-rw-r--r-- | spec/ruby/library/prime/integer/prime_division_spec.rb | 19 | ||||
-rw-r--r-- | spec/ruby/library/prime/integer/prime_spec.rb | 17 | ||||
-rw-r--r-- | spec/ruby/library/prime/next_spec.rb | 7 | ||||
-rw-r--r-- | spec/ruby/library/prime/prime_division_spec.rb | 25 | ||||
-rw-r--r-- | spec/ruby/library/prime/prime_spec.rb | 17 | ||||
-rw-r--r-- | spec/ruby/library/prime/shared/next.rb | 8 | ||||
-rw-r--r-- | spec/ruby/library/prime/succ_spec.rb | 7 |
12 files changed, 327 insertions, 0 deletions
diff --git a/spec/ruby/library/prime/each_spec.rb b/spec/ruby/library/prime/each_spec.rb new file mode 100644 index 0000000000..bccccfdcdc --- /dev/null +++ b/spec/ruby/library/prime/each_spec.rb @@ -0,0 +1,167 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require 'prime' + +describe :prime_each, shared: true do + before :each do + ScratchPad.record [] + end + + it "enumerates primes" do + primes = Prime.instance + result = [] + + primes.each { |p| + result << p + break if p > 10 + } + + 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 + end + + it "returns the last evaluated expression in the passed block" do + @object.each { break :value }.should equal(:value) + 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 + + it "returns an object that responds to #with_object" do + @prime_enum.should respond_to(:with_object) + end + + it "returns an object that responds to #next" do + @prime_enum.should respond_to(:next) + end + + it "returns an object that responds to #rewind" do + @prime_enum.should respond_to(:rewind) + end + + it "yields primes starting at 2 independent of prior enumerators" do + @prime_enum.next.should == 2 + @prime_enum.next.should == 3 + + @object.each { |prime| break prime }.should == 2 + 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 independent enumerators" do + enum = @object.each + enum.next.should == 2 + enum.next.should == 3 + + @prime_enum.next.should == 2 + + enum.next.should == 5 + end + end +end + +describe :prime_each_with_arguments, shared: true do + before :each do + ScratchPad.record [] + 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 + + ScratchPad.recorded.all? do |prime| + (2..Math.sqrt(prime)).all? { |d| prime % d != 0 } + end.should be_true + + ScratchPad.recorded.all? { |prime| prime <= bound }.should be_true + end + + it "returns nil when no prime is generated" do + @object.each(1) { :value }.should be_nil + 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 + 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 + + 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 + +describe "Prime.each" do + it_behaves_like :prime_each, :each, Prime +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 diff --git a/spec/ruby/library/prime/instance_spec.rb b/spec/ruby/library/prime/instance_spec.rb new file mode 100644 index 0000000000..64497c1b7c --- /dev/null +++ b/spec/ruby/library/prime/instance_spec.rb @@ -0,0 +1,21 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require 'prime' + +describe "Prime.instance" do + it "returns a object representing the set of prime numbers" do + Prime.instance.should be_kind_of(Prime) + end + + it "returns a object with no obsolete features" do + Prime.instance.should_not respond_to(:succ) + Prime.instance.should_not respond_to(:next) + end + + it "does not complain anything" do + lambda { Prime.instance }.should_not complain + end + + it "raises a ArgumentError when is called with some arguments" do + lambda { Prime.instance(1) }.should raise_error(ArgumentError) + end +end diff --git a/spec/ruby/library/prime/int_from_prime_division_spec.rb b/spec/ruby/library/prime/int_from_prime_division_spec.rb new file mode 100644 index 0000000000..df98976f5f --- /dev/null +++ b/spec/ruby/library/prime/int_from_prime_division_spec.rb @@ -0,0 +1,13 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require 'prime' + +describe "Prime.int_from_prime_division" do + it "returns the product of the given factorization" do + Prime.int_from_prime_division([[2,3], [3,3], [5,3], [7,3], [11,3], [13,3], [17,3]]). + should == 2**3 * 3**3 * 5**3 * 7**3 * 11**3 * 13**3 * 17**3 + end + + it "returns 1 for an empty factorization" do + Prime.int_from_prime_division([]).should == 1 + end +end diff --git a/spec/ruby/library/prime/integer/each_prime_spec.rb b/spec/ruby/library/prime/integer/each_prime_spec.rb new file mode 100644 index 0000000000..e1b0092762 --- /dev/null +++ b/spec/ruby/library/prime/integer/each_prime_spec.rb @@ -0,0 +1,13 @@ +require File.expand_path('../../../../spec_helper', __FILE__) +require 'prime' + +describe "Integer.each_prime" do + it "is transferred to Prime.each" do + Prime.should_receive(:each).with(100).and_yield(2).and_yield(3).and_yield(5) + yielded = [] + Integer.each_prime(100) do |prime| + yielded << prime + end + yielded.should == [2,3,5] + end +end diff --git a/spec/ruby/library/prime/integer/from_prime_division_spec.rb b/spec/ruby/library/prime/integer/from_prime_division_spec.rb new file mode 100644 index 0000000000..6ef98a2ecf --- /dev/null +++ b/spec/ruby/library/prime/integer/from_prime_division_spec.rb @@ -0,0 +1,13 @@ +require File.expand_path('../../../../spec_helper', __FILE__) +require 'prime' + +describe "Integer.from_prime_division" do + it "returns the product of the given factorization" do + Integer.from_prime_division([[2,3], [3,3], [5,3], [7,3], [11,3], [13,3], [17,3]]). + should == 2**3 * 3**3 * 5**3 * 7**3 * 11**3 * 13**3 * 17**3 + end + + it "returns 1 for an empty factorization" do + Integer.from_prime_division([]).should == 1 + end +end diff --git a/spec/ruby/library/prime/integer/prime_division_spec.rb b/spec/ruby/library/prime/integer/prime_division_spec.rb new file mode 100644 index 0000000000..db137778ea --- /dev/null +++ b/spec/ruby/library/prime/integer/prime_division_spec.rb @@ -0,0 +1,19 @@ +require File.expand_path('../../../../spec_helper', __FILE__) +require 'prime' + +describe "Integer#prime_division" do + it "returns an array of a prime factor and a corresponding exponent" do + (2*3*5*7*11*13*17).prime_division.should == + [[2,1], [3,1], [5,1], [7,1], [11,1], [13,1], [17,1]] + end + + it "returns an empty array for 1" do + 1.prime_division.should == [] + end + it "returns an empty array for -1" do + -1.prime_division.should == [[-1, 1]] + end + it "raises ZeroDivisionError for 0" do + lambda { 0.prime_division }.should raise_error(ZeroDivisionError) + end +end diff --git a/spec/ruby/library/prime/integer/prime_spec.rb b/spec/ruby/library/prime/integer/prime_spec.rb new file mode 100644 index 0000000000..ba869ba60e --- /dev/null +++ b/spec/ruby/library/prime/integer/prime_spec.rb @@ -0,0 +1,17 @@ +require File.expand_path('../../../../spec_helper', __FILE__) +require 'prime' + +describe "Integer#prime?" do + it "returns a true value for prime numbers" do + 2.prime?.should be_true + 3.prime?.should be_true + (2**31-1).prime?.should be_true # 8th Mersenne prime (M8) + end + + it "returns a false value for composite numbers" do + 4.prime?.should be_false + 15.prime?.should be_false + (2**32-1).prime?.should be_false + ( (2**17-1)*(2**19-1) ).prime?.should be_false # M6*M7 + end +end diff --git a/spec/ruby/library/prime/next_spec.rb b/spec/ruby/library/prime/next_spec.rb new file mode 100644 index 0000000000..afff353d6e --- /dev/null +++ b/spec/ruby/library/prime/next_spec.rb @@ -0,0 +1,7 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/next', __FILE__) +require 'prime' + +describe "Prime#next" do + it_behaves_like :prime_next, :next +end diff --git a/spec/ruby/library/prime/prime_division_spec.rb b/spec/ruby/library/prime/prime_division_spec.rb new file mode 100644 index 0000000000..faca8bda02 --- /dev/null +++ b/spec/ruby/library/prime/prime_division_spec.rb @@ -0,0 +1,25 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require 'prime' + +describe "Prime.prime_division" do + it "returns an array of a prime factor and a corresponding exponent" do + Prime.prime_division(2*3*5*7*11*13*17).should == + [[2,1], [3,1], [5,1], [7,1], [11,1], [13,1], [17,1]] + end + + it "returns an empty array for 1" do + Prime.prime_division(1).should == [] + end + + it "returns [[-1, 1]] for -1" do + Prime.prime_division(-1).should == [[-1, 1]] + end + + it "includes [[-1, 1]] in the divisors of a negative number" do + Prime.prime_division(-10).should include([-1, 1]) + end + + it "raises ZeroDivisionError for 0" do + lambda { Prime.prime_division(0) }.should raise_error(ZeroDivisionError) + end +end diff --git a/spec/ruby/library/prime/prime_spec.rb b/spec/ruby/library/prime/prime_spec.rb new file mode 100644 index 0000000000..7a41496f7f --- /dev/null +++ b/spec/ruby/library/prime/prime_spec.rb @@ -0,0 +1,17 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require 'prime' + +describe "Prime#prime?" do + it "returns a true value for prime numbers" do + Prime.prime?(2).should be_true + Prime.prime?(3).should be_true + Prime.prime?(2**31-1).should be_true # 8th Mersenne prime (M8) + end + + it "returns a false value for composite numbers" do + Prime.prime?(4).should be_false + Prime.prime?(15).should be_false + Prime.prime?(2**32-1).should be_false + Prime.prime?( (2**17-1)*(2**19-1) ).should be_false # M6*M7 + end +end diff --git a/spec/ruby/library/prime/shared/next.rb b/spec/ruby/library/prime/shared/next.rb new file mode 100644 index 0000000000..f79b2c051e --- /dev/null +++ b/spec/ruby/library/prime/shared/next.rb @@ -0,0 +1,8 @@ +describe :prime_next, shared: true do + it "returns the element at the current position and moves forward" do + p = Prime.instance.each + p.next.should == 2 + p.next.should == 3 + p.next.next.should == 6 + end +end diff --git a/spec/ruby/library/prime/succ_spec.rb b/spec/ruby/library/prime/succ_spec.rb new file mode 100644 index 0000000000..85d22ee654 --- /dev/null +++ b/spec/ruby/library/prime/succ_spec.rb @@ -0,0 +1,7 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../shared/next', __FILE__) +require 'prime' + +describe "Prime#succ" do + it_behaves_like :prime_next, :succ +end |