74 lines
2.2 KiB
Ruby
74 lines
2.2 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
RSpec.describe ONPDiff do
|
|
|
|
describe "diff" do
|
|
|
|
it "returns an empty array when there is no content to diff" do
|
|
expect(ONPDiff.new("", "").diff).to eq([])
|
|
end
|
|
|
|
it "returns an array with the operation code for each element" do
|
|
expect(ONPDiff.new("abcd", "abef").diff).to eq([["a", :common], ["b", :common], ["e", :add], ["f", :add], ["c", :delete], ["d", :delete]])
|
|
end
|
|
|
|
it "bails out on large diffs" do
|
|
a = SecureRandom.alphanumeric(5_000)
|
|
b = SecureRandom.alphanumeric(5_000)
|
|
expect(ONPDiff.new(a, b).diff).to eq([])
|
|
end
|
|
|
|
end
|
|
|
|
describe "short_diff" do
|
|
|
|
it "returns an empty array when there is no content to diff" do
|
|
expect(ONPDiff.new("", "").short_diff).to eq([])
|
|
end
|
|
|
|
it "returns an array with the operation code for each element" do
|
|
expect(ONPDiff.new("abc", "acd").short_diff).to eq([["a", :common], ["b", :delete], ["c", :common], ["d", :add]])
|
|
end
|
|
|
|
it "returns an array with sequentially similar operations merged" do
|
|
expect(ONPDiff.new("abcd", "abef").short_diff).to eq([["ab", :common], ["ef", :add], ["cd", :delete]])
|
|
end
|
|
|
|
end
|
|
|
|
describe "paragraph_diff" do
|
|
|
|
it "returns an empty array when there is no content to diff" do
|
|
expect(ONPDiff.new("", "").paragraph_diff).to eq([])
|
|
end
|
|
|
|
it "returns an array with the operation code for each element" do
|
|
expect(ONPDiff.new("abc", "acd").paragraph_diff).to eq([["a", :common], ["b", :delete], ["c", :common], ["d", :add]])
|
|
end
|
|
|
|
it "pairs as many elements as possible" do
|
|
expect(ONPDiff.new("abcd", "abef").paragraph_diff).to eq([
|
|
["a", :common], ["b", :common],
|
|
["e", :add], ["c", :delete],
|
|
["f", :add], ["d", :delete]
|
|
])
|
|
|
|
expect(ONPDiff.new("abcde", "abfg").paragraph_diff).to eq([
|
|
["a", :common], ["b", :common],
|
|
["c", :delete],
|
|
["d", :delete], ["f", :add],
|
|
["e", :delete], ["g", :add]
|
|
])
|
|
|
|
expect(ONPDiff.new("abcd", "abefg").paragraph_diff).to eq([
|
|
["a", :common], ["b", :common],
|
|
["e", :add],
|
|
["f", :add], ["c", :delete],
|
|
["g", :add], ["d", :delete]
|
|
])
|
|
end
|
|
|
|
end
|
|
|
|
end
|