livecheck_version: add tests

Library/Homebrew/test/livecheck/livecheck_spec.rb

@@ -1,5 +1,5 @@
 # typed: false
-# Frozen_string_literal: true
+# frozen_string_literal: true
 
 require "livecheck/livecheck"
 

Library/Homebrew/test/livecheck/livecheck_version_spec.rb

@@ -0,0 +1,32 @@
+# typed: false
+# frozen_string_literal: true
+
+require "livecheck/livecheck_version"
+
+describe Homebrew::Livecheck::LivecheckVersion do
+  let(:formula) { instance_double(Formula) }
+  let(:cask) { instance_double(Cask::Cask) }
+
+  before do
+    # Case statements use #=== for case equality purposes
+    allow(Formula).to receive(:===).and_call_original
+    allow(Formula).to receive(:===).with(formula).and_return(true)
+    allow(Cask::Cask).to receive(:===).and_call_original
+    allow(Cask::Cask).to receive(:===).with(cask).and_return(true)
+  end
+
+  specify "::create" do
+    expect(described_class.create(formula, Version.new("1.1.6")).versions).to eq ["1.1.6"]
+    expect(described_class.create(formula, Version.new("2.19.0,1.8.0")).versions).to eq ["2.19.0,1.8.0"]
+    expect(described_class.create(formula, Version.new("1.0,100:1426778671")).versions).to eq ["1.0,100:1426778671"]
+    expect(described_class.create(formula, Version.new("0.17.0,20210111183933,226")).versions)
+      .to eq ["0.17.0,20210111183933,226"]
+
+    expect(described_class.create(cask, Version.new("1.1.6")).versions).to eq ["1.1.6"]
+    expect(described_class.create(cask, Version.new("2.19.0,1.8.0")).versions).to eq ["2.19.0", "1.8.0"]
+    expect(described_class.create(cask, Version.new("1.0,100:1426778671")).versions)
+      .to eq ["1.0", "100", "1426778671"]
+    expect(described_class.create(cask, Version.new("0.17.0,20210111183933,226")).versions)
+      .to eq ["0.17.0", "20210111183933", "226"]
+  end
+end

Library/Homebrew/test/livecheck/skip_conditions_spec.rb

@@ -1,5 +1,5 @@
 # typed: false
-# Frozen_string_literal: true
+# frozen_string_literal: true
 
 require "livecheck/skip_conditions"