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require 'spec_helper'
require 'enumerable/statistics'
RSpec.shared_examples_for 'value_counts' do
matrix = [
{ normalize: false, sort: true, ascending: false, dropna: true,
result: {"g"=>11, "b"=>10, "f"=>6, "e"=>4, "a"=>3, "c"=>3, "d"=>3} },
{ normalize: false, sort: true, ascending: false, dropna: false,
result: {"g"=>11, "b"=>10, "f"=>6, "e"=>4, "a"=>3, "c"=>3, "d"=>3, nil=>3} },
{ normalize: false, sort: true, ascending: true, dropna: true,
result: {"a"=>3, "c"=>3, "d"=>3, "e"=>4, "f"=>6, "b"=>10, "g"=>11} },
{ normalize: false, sort: true, ascending: true, dropna: false,
result: {nil=>3, "a"=>3, "c"=>3, "d"=>3, "e"=>4, "f"=>6, "b"=>10, "g"=>11} },
{ normalize: false, sort: false, ascending: false, dropna: true,
result: {"b"=>10, "g"=>11, "a"=>3, "f"=>6, "e"=>4, "c"=>3, "d"=>3} },
{ normalize: false, sort: false, ascending: false, dropna: false,
result: {nil=>3, "b"=>10, "g"=>11, "a"=>3, "f"=>6, "e"=>4, "c"=>3, "d"=>3} },
{ normalize: false, sort: false, ascending: true, dropna: true,
result: {"b"=>10, "g"=>11, "a"=>3, "f"=>6, "e"=>4, "c"=>3, "d"=>3} },
{ normalize: false, sort: false, ascending: true, dropna: false,
result: {nil=>3, "b"=>10, "g"=>11, "a"=>3, "f"=>6, "e"=>4, "c"=>3, "d"=>3} },
{ normalize: true, sort: true, ascending: false, dropna: true,
result: {"g"=>0.275, "b"=>0.250, "f"=>0.150, "e"=>0.100, "a"=>0.075, "c"=>0.075, "d"=>0.075} },
{ normalize: true, sort: true, ascending: false, dropna: false,
result: {"g"=>11/43.0, "b"=>10/43.0, "f"=>6/43.0, "e"=>4/43.0, "a"=>3/43.0, "c"=>3/43.0, "d"=>3/43.0, nil=>3/43.0} },
{ normalize: true, sort: true, ascending: true, dropna: true,
result: {"a"=>0.075, "c"=>0.075, "d"=>0.075, "e"=>0.100, "f"=>0.150, "b"=>0.250, "g"=>0.275} },
{ normalize: true, sort: true, ascending: true, dropna: false,
result: {nil=>3/43.0, "a"=>3/43.0, "c"=>3/43.0, "d"=>3/43.0, "e"=>4/43.0, "f"=>6/43.0, "b"=>10/43.0, "g"=>11/43.0} },
{ normalize: true, sort: false, ascending: false, dropna: true,
result: {"b"=>0.250, "g"=>0.275, "a"=>0.075, "f"=>0.150, "e"=>0.100, "c"=>0.075, "d"=>0.075} },
{ normalize: true, sort: false, ascending: false, dropna: false,
result: {nil=>3/43.0, "b"=>10/43.0, "g"=>11/43.0, "a"=>3/43.0, "f"=>6/43.0, "e"=>4/43.0, "c"=>3/43.0, "d"=>3/43.0} },
{ normalize: true, sort: false, ascending: true, dropna: true,
result: {"b"=>0.250, "g"=>0.275, "a"=>0.075, "f"=>0.150, "e"=>0.100, "c"=>0.075, "d"=>0.075} },
{ normalize: true, sort: false, ascending: true, dropna: false,
result: {nil=>3/43.0, "b"=>10/43.0, "g"=>11/43.0, "a"=>3/43.0, "f"=>6/43.0, "e"=>4/43.0, "c"=>3/43.0, "d"=>3/43.0} },
]
matrix.each do |params|
param_values = params.values_at(:normalize, :sort, :ascending, :dropna)
context "with normalize: %s, sort: %s, ascending: %s, dropna: %s" % param_values do
args = params.dup
expected_result = args.delete(:result)
specify "the order of counts" do
result_values = receiver.value_counts(**args).values
expected_values = expected_result.values
expect(result_values).to eq(expected_values)
end
specify "pairs" do
result_pairs = receiver.value_counts(**args).to_a.sort_by {|a| a[0].to_s }
expected_pairs = expected_result.to_a.sort_by {|a| a[0].to_s }
expect(result_pairs).to eq(expected_pairs)
end
end
end
end
RSpec.describe Array do
describe '#value_counts' do
let(:receiver) do
'bggbafgeeebgbbaccdgdgdbbgbgffbaffggcegbf'.chars.tap do |ary|
ary[5, 0] = nil
ary[15, 0] = nil
ary[20, 0] = nil
end
end
include_examples 'value_counts'
end
end
RSpec.describe Hash do
describe '#value_counts' do
let(:array) do
'bggbafgeeebgbbaccdgdgdbbgbgffbaffggcegbf'.chars.tap do |ary|
ary[5, 0] = nil
ary[15, 0] = nil
ary[20, 0] = nil
end
end
let(:receiver) do
array.map.with_index {|x, i| [i, x] }.to_h
end
include_examples 'value_counts'
end
end
RSpec.describe Enumerable do
describe '#value_counts' do
let(:array) do
'bggbafgeeebgbbaccdgdgdbbgbgffbaffggcegbf'.chars.tap do |ary|
ary[5, 0] = nil
ary[15, 0] = nil
ary[20, 0] = nil
end
end
let(:receiver) do
array.each
end
include_examples 'value_counts'
end
end
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