spec/readme_spec.rb in games_dice-0.3.12 vs spec/readme_spec.rb in games_dice-0.4.0
- old
+ new
@@ -1,390 +1,404 @@
-require 'helpers'
-# This spec demonstrates that documentation from the README.md works as intended
-
-describe GamesDice do
-
- describe '#create' do
- it "converts a string such as '3d6+6' into a GamesDice::Dice object" do
- d = GamesDice.create '3d6+6'
- d.should be_a GamesDice::Dice
- end
-
- it "takes a parameter 'dice_description', which is a string such as '3d6' or '2d4-1'" do
- d = GamesDice.create '3d6'
- d.should be_a GamesDice::Dice
- d = GamesDice.create '2d4-1'
- d.should be_a GamesDice::Dice
- end
-
- it "takes an optional parameter 'prng', which if provided it should be an object that has a method 'rand( integer )'" do
- prng = TestPRNG.new
-
- d = GamesDice.create '3d6', prng
- d.should be_a GamesDice::Dice
-
- (0..5).each do |dresult|
- prng.stub( :rand ) { dresult }
- expect( prng ).to receive(:rand).with(6)
- d.roll.should == (dresult + 1) * 3
- end
- end
- end # describe '#create'
-
-end # describe GamesDice
-
-describe GamesDice::Dice do
-
- before :each do
- srand(67809)
- end
-
- let(:dice) { GamesDice.create '3d6'}
-
- describe "#roll" do
- it "simulates rolling the dice as they were described in the constructor" do
- expected_results = [11,15,11,12,12,9]
- expected_results.each do |expected|
- dice.roll.should == expected
- end
- end
- end
-
- describe "#result" do
- it "returns the value from the last call to roll" do
- expected_results = [11,15,11,12,12,9]
- expected_results.each do |expected|
- dice.roll
- dice.result.should == expected
- end
- end
-
- it "will be nil if no roll has been made yet" do
- dice.result.should be_nil
- end
- end
-
- describe "#explain_result" do
- it "attempts to show how the result from the last call to roll was composed" do
- expected_results = [
- "3d6: 3 + 6 + 2 = 11",
- "3d6: 4 + 5 + 6 = 15",
- "3d6: 3 + 6 + 2 = 11",
- "3d6: 5 + 6 + 1 = 12"
- ]
- expected_results.each do |expected|
- dice.roll
- dice.explain_result.should == expected
- end
- end
-
- it "will be nil if no roll has been made yet" do
- dice.explain_result.should be_nil
- end
- end
-
- describe "#max" do
- it "returns the maximum possible value from a roll of the dice" do
- dice.max.should == 18
- end
- end
-
- describe "#min" do
- it "returns the minimum possible value from a roll of the dice" do
- dice.min.should == 3
- end
- end
-
- describe "#minmax" do
- it "returns an array [ dice.min, dice.max ]" do
- dice.minmax.should == [3,18]
- end
- end
-
- describe "#probabilities" do
- it "calculates probability distribution for the dice" do
- pd = dice.probabilities
- pd.should be_a GamesDice::Probabilities
- pd.p_eql( 3).should be_within(1e-10).of 1.0/216
- pd.p_eql( 11 ).should be_within(1e-10).of 27.0/216
- end
- end
-
-end # describe GamesDice::Dice
-
-describe GamesDice::Probabilities do
- let(:probs) { GamesDice.create('3d6').probabilities }
-
- describe "#to_h" do
- it "returns a hash representation of the probability distribution" do
- h = probs.to_h
- h.should be_valid_distribution
- h[3].should be_within(1e-10).of 1.0/216
- h[11].should be_within(1e-10).of 27.0/216
- end
- end
-
- describe "#max" do
- it "returns maximum result in the probability distribution" do
- probs.max.should == 18
- end
- end
-
- describe "#min" do
- it "returns minimum result in the probability distribution" do
- probs.min.should == 3
- end
- end
-
- describe "#p_eql( n )" do
- it "returns the probability of a result equal to the integer n" do
- probs.p_eql( 3 ).should be_within(1e-10).of 1.0/216
- probs.p_eql( 2 ).should == 0.0
- end
- end
-
- describe "#p_gt( n )" do
- it "returns the probability of a result greater than the integer n" do
- probs.p_gt( 17 ).should be_within(1e-10).of 1.0/216
- probs.p_gt( 2 ).should == 1.0
- end
- end
-
- describe "#p_ge( n )" do
- it "returns the probability of a result greater than the integer n" do
- probs.p_ge( 17 ).should be_within(1e-10).of 4.0/216
- probs.p_ge( 3 ).should == 1.0
- end
- end
-
- describe "#p_le( n )" do
- it "returns the probability of a result less than or equal to the integer n" do
- probs.p_le( 17 ).should be_within(1e-10).of 215.0/216
- probs.p_le( 3 ).should be_within(1e-10).of 1.0/216
- end
- end
-
- describe "#p_lt( n )" do
- it "returns the probability of a result less than the integer n" do
- probs.p_lt( 17 ).should be_within(1e-10).of 212.0/216
- probs.p_lt( 3 ).should == 0.0
- end
- end
-
-end # describe GamesDice::Probabilities
-
-describe 'String Dice Description' do
-
- before :each do
- srand(35241)
- end
-
- describe "'1d6'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '1d6'
- (1..20).map { |n| d.roll }.should == [6, 3, 2, 3, 4, 6, 4, 2, 6, 3, 3, 5, 6, 6, 3, 6, 5, 2, 1, 4]
- end
- end
-
- describe "'2d6 + 1d4'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '2d6 + 1d4'
- (1..5).map { |n| d.roll }.should == [11, 10, 12, 12, 14]
- end
- end
-
- describe "'1d100 + 1d20 - 5'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '1d100 + 1d20 - 5'
- (1..5).map { |n| d.roll }.should == [75, 78, 24, 102, 32]
- end
- end
-
- describe "'1d10x'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '1d10x'
- (1..20).map { |n| d.roll }.should == [2, 3, 4, 7, 6, 7, 4, 2, 6, 3, 7, 5, 6, 7, 6, 6, 5, 19, 4, 19]
- end
- end
-
- describe "'1d6r1'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '1d6r1'
- (1..20).map { |n| d.roll }.should == [6, 3, 2, 3, 4, 6, 4, 2, 6, 3, 3, 5, 6, 6, 3, 6, 5, 2, 4, 2]
- end
- end
-
- describe "'5d10r:10,add.k2'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '5d10r:10,add.k2'
- (1..5).map { |n| d.roll }.should == [13, 13, 14, 38, 15]
- end
- end
-
- describe "'3d10m6'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '3d10m6'
- (1..6).map { |n| d.roll }.should == [0, 3, 1, 1, 3, 2]
- end
- end
-
- describe "'5d10k2'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '5d10k2'
- (1..5).map { |n| d.roll }.should == [13, 13, 14, 19, 19]
- end
- end
-
- describe "'5d10x'" do
- it "is the same as '5d10r:10,add.'" do
- srand(235241)
- d = GamesDice.create '5d10x'
- results1 = (1..50).map { d.roll }
-
- srand(235241)
- d = GamesDice.create '5d10r:10,add.'
- results2 = (1..50).map { d.roll }
-
- results1.should == results2
- end
- end
-
- describe "'1d6r:1.'" do
- it "should return same as '1d6r1'" do
- srand(235241)
- d = GamesDice.create '1d6r:1.'
- results1 = (1..50).map { d.roll }
-
- srand(235241)
- d = GamesDice.create '1d6r1'
- results2 = (1..50).map { d.roll }
-
- results1.should == results2
- end
- end
-
- describe "'1d10r:10,replace,1.'" do
- it "should roll a 10-sided die, re-roll a result of 10 and take the value of the second roll" do
- d = GamesDice.create '1d10r:10,replace,1.'
- (1..27).map { d.roll }.should == [2, 3, 4, 7, 6, 7, 4, 2, 6, 3, 7, 5, 6, 7, 6, 6, 5, 9, 4, 9, 8, 3, 1, 6, 7, 1, 1]
- end
- end
-
- describe "'1d20r:<=10,use_best,1.'" do
- it "should roll a 20-sided die, re-roll a result if 10 or lower, and use best result" do
- d = GamesDice.create '1d20r:<=10,use_best,1.'
- (1..20).map { d.roll }.should == [ 18, 19, 20, 20, 3, 11, 7, 20, 15, 19, 6, 16, 17, 16, 15, 11, 9, 15, 20, 16 ]
- end
- end
-
- describe "'5d10r:10,add.k2', '5d10xk2' and '5d10x.k2'" do
- it "should all be equivalent" do
- srand(135241)
- d = GamesDice.create '5d10r:10,add.k2'
- results1 = (1..50).map { d.roll }
-
- srand(135241)
- d = GamesDice.create '5d10xk2'
- results2 = (1..50).map { d.roll }
-
- srand(135241)
- d = GamesDice.create '5d10x.k2'
- results3 = (1..50).map { d.roll }
-
- results1.should == results2
- results2.should == results3
- end
- end
-
- describe "'5d10r:>8,add.'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '5d10r:>8,add.'
- (1..5).map { |n| d.roll }.should == [22, 22, 31, 64, 26]
- end
- end
-
- describe "'9d6x.m:10.'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '9d6x.m:10.'
- (1..5).map { |n| d.roll }.should == [1, 2, 1, 1, 1]
- end
- it "can be explained as number of exploding dice scoring 10+" do
- d = GamesDice.create '9d6x.m:10.'
- (1..5).map { |n| d.roll; d.explain_result }.should == [
- "9d6: [6+3] 9, 2, 3, 4, [6+4] 10, 2, [6+3] 9, 3, 5. Successes: 1",
- "9d6: [6+6+3] 15, [6+5] 11, 2, 1, 4, 2, 1, 3, 5. Successes: 2",
- "9d6: 1, [6+6+1] 13, 2, 1, 1, 3, [6+1] 7, 5, 4. Successes: 1",
- "9d6: [6+4] 10, 3, 4, 5, 5, 1, [6+3] 9, 3, 5. Successes: 1",
- "9d6: [6+3] 9, 3, [6+5] 11, 4, 2, 2, 1, 4, 5. Successes: 1"
- ]
- end
- end
-
- describe "'9d6x.m:10,1,S.'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '9d6x.m:10,1,S.'
- (1..5).map { |n| d.roll }.should == [1, 2, 1, 1, 1]
- end
- it "includes the string 'S' next to each success" do
- d = GamesDice.create '9d6x.m:10,1,S.'
- (1..5).map { |n| d.roll; d.explain_result }.should == [
- "9d6: [6+3] 9, 2, 3, 4, [6+4] 10 S, 2, [6+3] 9, 3, 5. Successes: 1",
- "9d6: [6+6+3] 15 S, [6+5] 11 S, 2, 1, 4, 2, 1, 3, 5. Successes: 2",
- "9d6: 1, [6+6+1] 13 S, 2, 1, 1, 3, [6+1] 7, 5, 4. Successes: 1",
- "9d6: [6+4] 10 S, 3, 4, 5, 5, 1, [6+3] 9, 3, 5. Successes: 1",
- "9d6: [6+3] 9, 3, [6+5] 11 S, 4, 2, 2, 1, 4, 5. Successes: 1"
- ]
- end
- end
-
- describe "'5d10m:>=6,1,S.m:==1,-1,F.'" do
- it "returns expected results from rolling" do
- d = GamesDice.create '5d10m:>=6,1,S.m:==1,-1,F.'
- (1..10).map { |n| d.roll }.should == [2, 2, 4, 3, 2, 1, 1, 3, 3, 0]
- end
- it "includes the string 'S' next to each success, and 'F' next to each 'fumble'" do
- d = GamesDice.create '5d10m:>=6,1,S.m:==1,-1,F.'
- (1..5).map { |n| d.roll; d.explain_result }.should == [
- "5d10: 2, 3, 4, 7 S, 6 S. Successes: 2",
- "5d10: 7 S, 4, 2, 6 S, 3. Successes: 2",
- "5d10: 7 S, 5, 6 S, 7 S, 6 S. Successes: 4",
- "5d10: 6 S, 5, 10 S, 9 S, 4. Successes: 3",
- "5d10: 10 S, 9 S, 8 S, 3, 1 F. Successes: 2"
- ]
- end
- end
-
- describe "'4d6k:3.r:1,replace,1.'" do
- it "represents roll 4 six-sided dice, re-roll any 1s, and keep best 3." do
- d = GamesDice.create '4d6k:3.r:1,replace,1.'
- (1..10).map { |n| d.roll }.should == [12, 14, 14, 18, 11, 17, 11, 15, 14, 14]
- end
- it "includes re-rolls and keeper choice in explanations" do
- d = GamesDice.create '4d6k:3.r:1,replace,1.'
- (1..5).map { |n| d.roll; d.explain_result }.should == [
- "4d6: 6, 3, 2, 3. Keep: 3 + 3 + 6 = 12",
- "4d6: 4, 6, 4, 2. Keep: 4 + 4 + 6 = 14",
- "4d6: 6, 3, 3, 5. Keep: 3 + 5 + 6 = 14",
- "4d6: 6, 6, 3, 6. Keep: 6 + 6 + 6 = 18",
- "4d6: 5, 2, [1|4] 4, 2. Keep: 2 + 4 + 5 = 11"
- ]
- end
- end
-
- describe "'2d20k:1,worst.'" do
- it "represents roll 2 twenty-sided dice, return lowest of the two results" do
- d = GamesDice.create '2d20k:1,worst.'
- (1..10).map { |n| d.roll }.should == [18, 6, 2, 3, 5, 10, 15, 1, 7, 10]
- end
- it "includes keeper choice in explanations" do
- d = GamesDice.create '2d20k:1,worst.'
- (1..5).map { |n| d.roll; d.explain_result }.should == [
- "2d20: 18, 19. Keep: 18",
- "2d20: 20, 6. Keep: 6",
- "2d20: 20, 2. Keep: 2",
- "2d20: 3, 11. Keep: 3",
- "2d20: 5, 7. Keep: 5"
- ]
- end
- end
-
-end
+# frozen_string_literal: true
+
+require 'helpers'
+# This spec demonstrates that documentation from the README.md works as intended
+
+describe GamesDice do
+ describe '#create' do
+ it "converts a string such as '3d6+6' into a GamesDice::Dice object" do
+ d = GamesDice.create '3d6+6'
+ expect(d).to be_a GamesDice::Dice
+ end
+
+ it "takes a parameter 'dice_description', which is a string such as '3d6' or '2d4-1'" do
+ d = GamesDice.create '3d6'
+ expect(d).to be_a GamesDice::Dice
+ d = GamesDice.create '2d4-1'
+ expect(d).to be_a GamesDice::Dice
+ end
+
+ it "takes an optional parameter 'prng', which should be an object that has a method 'rand( integer )'" do
+ prng = TestPRNG.new
+
+ d = GamesDice.create '3d6', prng
+ expect(d).to be_a GamesDice::Dice
+
+ (0..5).each do |dresult|
+ allow(prng).to receive(:rand).and_return(dresult)
+ expect(prng).to receive(:rand).with(6)
+ expect(d.roll).to eql (dresult + 1) * 3
+ end
+ end
+ end
+end
+
+describe GamesDice::Dice do
+ before :each do
+ srand(67_809)
+ end
+
+ let(:dice) { GamesDice.create '3d6' }
+
+ describe '#roll' do
+ it 'simulates rolling the dice as they were described in the constructor' do
+ expected_results = [11, 15, 11, 12, 12, 9]
+ expected_results.each do |expected|
+ expect(dice.roll).to eql expected
+ end
+ end
+ end
+
+ describe '#result' do
+ it 'returns the value from the last call to roll' do
+ expected_results = [11, 15, 11, 12, 12, 9]
+ expected_results.each do |expected|
+ dice.roll
+ expect(dice.result).to eql expected
+ end
+ end
+
+ it 'will be nil if no roll has been made yet' do
+ expect(dice.result).to be_nil
+ end
+ end
+
+ describe '#explain_result' do
+ it 'attempts to show how the result from the last call to roll was composed' do
+ expected_results = [
+ '3d6: 3 + 6 + 2 = 11',
+ '3d6: 4 + 5 + 6 = 15',
+ '3d6: 3 + 6 + 2 = 11',
+ '3d6: 5 + 6 + 1 = 12'
+ ]
+ expected_results.each do |expected|
+ dice.roll
+ expect(dice.explain_result).to eql expected
+ end
+ end
+
+ it 'will be nil if no roll has been made yet' do
+ expect(dice.explain_result).to be_nil
+ end
+ end
+
+ describe '#max' do
+ it 'returns the maximum possible value from a roll of the dice' do
+ expect(dice.max).to eql 18
+ end
+ end
+
+ describe '#min' do
+ it 'returns the minimum possible value from a roll of the dice' do
+ expect(dice.min).to eql 3
+ end
+ end
+
+ describe '#minmax' do
+ it 'returns an array [ dice.min, dice.max ]' do
+ expect(dice.minmax).to eql [3, 18]
+ end
+ end
+
+ describe '#probabilities' do
+ it 'calculates probability distribution for the dice' do
+ pd = dice.probabilities
+ expect(pd).to be_a GamesDice::Probabilities
+ expect(pd.p_eql(3)).to be_within(1e-10).of 1.0 / 216
+ expect(pd.p_eql(11)).to be_within(1e-10).of 27.0 / 216
+ end
+ end
+end
+
+describe GamesDice::Probabilities do
+ let(:probs) { GamesDice.create('3d6').probabilities }
+
+ describe '#to_h' do
+ it 'returns a hash representation of the probability distribution' do
+ h = probs.to_h
+ expect(h).to be_valid_distribution
+ expect(h[3]).to be_within(1e-10).of 1.0 / 216
+ expect(h[11]).to be_within(1e-10).of 27.0 / 216
+ end
+ end
+
+ describe '#max' do
+ it 'returns maximum result in the probability distribution' do
+ expect(probs.max).to eql 18
+ end
+ end
+
+ describe '#min' do
+ it 'returns minimum result in the probability distribution' do
+ expect(probs.min).to eql 3
+ end
+ end
+
+ describe '#p_eql( n )' do
+ it 'returns the probability of a result equal to the integer n' do
+ expect(probs.p_eql(3)).to be_within(1e-10).of 1.0 / 216
+ expect(probs.p_eql(2)).to eql 0.0
+ end
+ end
+
+ describe '#p_gt( n )' do
+ it 'returns the probability of a result greater than the integer n' do
+ expect(probs.p_gt(17)).to be_within(1e-10).of 1.0 / 216
+ expect(probs.p_gt(2)).to eql 1.0
+ end
+ end
+
+ describe '#p_ge( n )' do
+ it 'returns the probability of a result greater than the integer n' do
+ expect(probs.p_ge(17)).to be_within(1e-10).of 4.0 / 216
+ expect(probs.p_ge(3)).to eql 1.0
+ end
+ end
+
+ describe '#p_le( n )' do
+ it 'returns the probability of a result less than or equal to the integer n' do
+ expect(probs.p_le(17)).to be_within(1e-10).of 215.0 / 216
+ expect(probs.p_le(3)).to be_within(1e-10).of 1.0 / 216
+ end
+ end
+
+ describe '#p_lt( n )' do
+ it 'returns the probability of a result less than the integer n' do
+ expect(probs.p_lt(17)).to be_within(1e-10).of 212.0 / 216
+ expect(probs.p_lt(3)).to eql 0.0
+ end
+ end
+end
+
+describe 'String Dice Description' do
+ before :each do
+ srand(35_241)
+ end
+
+ describe "'1d6'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '1d6'
+ expect((1..20).map { |_n| d.roll }).to eql [6, 3, 2, 3, 4, 6, 4, 2, 6, 3, 3, 5, 6, 6, 3, 6, 5, 2, 1, 4]
+ end
+ end
+
+ describe "'2d6 + 1d4'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '2d6 + 1d4'
+ expect((1..5).map { |_n| d.roll }).to eql [11, 10, 12, 12, 14]
+ end
+ end
+
+ describe "'1d100 + 1d20 - 5'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '1d100 + 1d20 - 5'
+ expect((1..5).map { |_n| d.roll }).to eql [75, 78, 24, 102, 32]
+ end
+ end
+
+ describe "'1d10x'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '1d10x'
+ expect((1..20).map { |_n| d.roll }).to eql [2, 3, 4, 7, 6, 7, 4, 2, 6, 3, 7, 5, 6, 7, 6, 6, 5, 19, 4, 19]
+ end
+ end
+
+ describe "'1d6r1'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '1d6r1'
+ expect((1..20).map { |_n| d.roll }).to eql [6, 3, 2, 3, 4, 6, 4, 2, 6, 3, 3, 5, 6, 6, 3, 6, 5, 2, 4, 2]
+ end
+ end
+
+ describe "'5d10r:10,add.k2'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '5d10r:10,add.k2'
+ expect((1..5).map { |_n| d.roll }).to eql [13, 13, 14, 38, 15]
+ end
+ end
+
+ describe "'3d10m6'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '3d10m6'
+ expect((1..6).map { |_n| d.roll }).to eql [0, 3, 1, 1, 3, 2]
+ end
+ end
+
+ describe "'5d10k2'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '5d10k2'
+ expect((1..5).map { |_n| d.roll }).to eql [13, 13, 14, 19, 19]
+ end
+ end
+
+ describe "'5d10x'" do
+ it "is the same as '5d10r:10,add.'" do
+ srand(235_241)
+ d = GamesDice.create '5d10x'
+ results1 = (1..50).map { d.roll }
+
+ srand(235_241)
+ d = GamesDice.create '5d10r:10,add.'
+ results2 = (1..50).map { d.roll }
+
+ expect(results1).to eql results2
+ end
+ end
+
+ describe "'1d6r:1.'" do
+ it "should return same as '1d6r1'" do
+ srand(235_241)
+ d = GamesDice.create '1d6r:1.'
+ results1 = (1..50).map { d.roll }
+
+ srand(235_241)
+ d = GamesDice.create '1d6r1'
+ results2 = (1..50).map { d.roll }
+
+ expect(results1).to eql results2
+ end
+ end
+
+ describe "'1d10r:10,replace,1.'" do
+ it 'should roll a 10-sided die, re-roll a result of 10 and take the value of the second roll' do
+ d = GamesDice.create '1d10r:10,replace,1.'
+ expect((1..27).map do
+ d.roll
+ end).to eql [2, 3, 4, 7, 6, 7, 4, 2, 6, 3, 7, 5, 6, 7, 6, 6, 5, 9, 4, 9, 8, 3, 1, 6, 7, 1, 1]
+ end
+ end
+
+ describe "'1d20r:<=10,use_best,1.'" do
+ it 'should roll a 20-sided die, re-roll a result if 10 or lower, and use best result' do
+ d = GamesDice.create '1d20r:<=10,use_best,1.'
+ expect((1..20).map do
+ d.roll
+ end).to eql [18, 19, 20, 20, 3, 11, 7, 20, 15, 19, 6, 16, 17, 16, 15, 11, 9, 15, 20, 16]
+ end
+ end
+
+ describe "'5d10r:10,add.k2', '5d10xk2' and '5d10x.k2'" do
+ it 'should all be equivalent' do
+ srand(135_241)
+ d = GamesDice.create '5d10r:10,add.k2'
+ results1 = (1..50).map { d.roll }
+
+ srand(135_241)
+ d = GamesDice.create '5d10xk2'
+ results2 = (1..50).map { d.roll }
+
+ srand(135_241)
+ d = GamesDice.create '5d10x.k2'
+ results3 = (1..50).map { d.roll }
+
+ expect(results1).to eql results2
+ expect(results1).to eql results3
+ end
+ end
+
+ describe "'5d10r:>8,add.'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '5d10r:>8,add.'
+ expect((1..5).map { |_n| d.roll }).to eql [22, 22, 31, 64, 26]
+ end
+ end
+
+ describe "'9d6x.m:10.'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '9d6x.m:10.'
+ expect((1..5).map { |_n| d.roll }).to eql [1, 2, 1, 1, 1]
+ end
+ it 'can be explained as number of exploding dice scoring 10+' do
+ d = GamesDice.create '9d6x.m:10.'
+ expect((1..5).map do |_n|
+ d.roll
+ d.explain_result
+ end).to eql [
+ '9d6: [6+3] 9, 2, 3, 4, [6+4] 10, 2, [6+3] 9, 3, 5. Successes: 1',
+ '9d6: [6+6+3] 15, [6+5] 11, 2, 1, 4, 2, 1, 3, 5. Successes: 2',
+ '9d6: 1, [6+6+1] 13, 2, 1, 1, 3, [6+1] 7, 5, 4. Successes: 1',
+ '9d6: [6+4] 10, 3, 4, 5, 5, 1, [6+3] 9, 3, 5. Successes: 1',
+ '9d6: [6+3] 9, 3, [6+5] 11, 4, 2, 2, 1, 4, 5. Successes: 1'
+ ]
+ end
+ end
+
+ describe "'9d6x.m:10,1,S.'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '9d6x.m:10,1,S.'
+ expect((1..5).map { |_n| d.roll }).to eql [1, 2, 1, 1, 1]
+ end
+ it "includes the string 'S' next to each success" do
+ d = GamesDice.create '9d6x.m:10,1,S.'
+ expect((1..5).map do |_n|
+ d.roll
+ d.explain_result
+ end).to eql [
+ '9d6: [6+3] 9, 2, 3, 4, [6+4] 10 S, 2, [6+3] 9, 3, 5. Successes: 1',
+ '9d6: [6+6+3] 15 S, [6+5] 11 S, 2, 1, 4, 2, 1, 3, 5. Successes: 2',
+ '9d6: 1, [6+6+1] 13 S, 2, 1, 1, 3, [6+1] 7, 5, 4. Successes: 1',
+ '9d6: [6+4] 10 S, 3, 4, 5, 5, 1, [6+3] 9, 3, 5. Successes: 1',
+ '9d6: [6+3] 9, 3, [6+5] 11 S, 4, 2, 2, 1, 4, 5. Successes: 1'
+ ]
+ end
+ end
+
+ describe "'5d10m:>=6,1,S.m:==1,-1,F.'" do
+ it 'returns expected results from rolling' do
+ d = GamesDice.create '5d10m:>=6,1,S.m:==1,-1,F.'
+ expect((1..10).map { |_n| d.roll }).to eql [2, 2, 4, 3, 2, 1, 1, 3, 3, 0]
+ end
+ it "includes the string 'S' next to each success, and 'F' next to each 'fumble'" do
+ d = GamesDice.create '5d10m:>=6,1,S.m:==1,-1,F.'
+ expect((1..5).map do |_n|
+ d.roll
+ d.explain_result
+ end).to eql [
+ '5d10: 2, 3, 4, 7 S, 6 S. Successes: 2',
+ '5d10: 7 S, 4, 2, 6 S, 3. Successes: 2',
+ '5d10: 7 S, 5, 6 S, 7 S, 6 S. Successes: 4',
+ '5d10: 6 S, 5, 10 S, 9 S, 4. Successes: 3',
+ '5d10: 10 S, 9 S, 8 S, 3, 1 F. Successes: 2'
+ ]
+ end
+ end
+
+ describe "'4d6k:3.r:1,replace,1.'" do
+ it 'represents roll 4 six-sided dice, re-roll any 1s, and keep best 3.' do
+ d = GamesDice.create '4d6k:3.r:1,replace,1.'
+ expect((1..10).map { |_n| d.roll }).to eql [12, 14, 14, 18, 11, 17, 11, 15, 14, 14]
+ end
+ it 'includes re-rolls and keeper choice in explanations' do
+ d = GamesDice.create '4d6k:3.r:1,replace,1.'
+ expect((1..5).map do |_n|
+ d.roll
+ d.explain_result
+ end).to eql [
+ '4d6: 6, 3, 2, 3. Keep: 3 + 3 + 6 = 12',
+ '4d6: 4, 6, 4, 2. Keep: 4 + 4 + 6 = 14',
+ '4d6: 6, 3, 3, 5. Keep: 3 + 5 + 6 = 14',
+ '4d6: 6, 6, 3, 6. Keep: 6 + 6 + 6 = 18',
+ '4d6: 5, 2, [1|4] 4, 2. Keep: 2 + 4 + 5 = 11'
+ ]
+ end
+ end
+
+ describe "'2d20k:1,worst.'" do
+ it 'represents roll 2 twenty-sided dice, return lowest of the two results' do
+ d = GamesDice.create '2d20k:1,worst.'
+ expect((1..10).map { |_n| d.roll }).to eql [18, 6, 2, 3, 5, 10, 15, 1, 7, 10]
+ end
+ it 'includes keeper choice in explanations' do
+ d = GamesDice.create '2d20k:1,worst.'
+ expect((1..5).map do |_n|
+ d.roll
+ d.explain_result
+ end).to eql [
+ '2d20: 18, 19. Keep: 18',
+ '2d20: 20, 6. Keep: 6',
+ '2d20: 20, 2. Keep: 2',
+ '2d20: 3, 11. Keep: 3',
+ '2d20: 5, 7. Keep: 5'
+ ]
+ end
+ end
+end