audit: Port audit_conflicts method to rubocop and add tests

1 files changed, 47 insertions, 0 deletions

diff --git a/Library/Homebrew/test/rubocops/conflicts_cop_spec.rb b/Library/Homebrew/test/rubocops/conflicts_cop_spec.rb
new file mode 100644
index 000000000..c3175509a
--- /dev/null
+++ b/Library/Homebrew/test/rubocops/conflicts_cop_spec.rb
@@ -0,0 +1,47 @@
+require "rubocop"
+require "rubocop/rspec/support"
+require_relative "../../extend/string"
+require_relative "../../rubocops/conflicts_cop"
+
+describe RuboCop::Cop::FormulaAudit::Conflicts do
+  subject(:cop) { described_class.new }
+
+  context "When auditing formula for conflicts with" do
+    it "multiple conflicts_with" do
+      source = <<-EOS.undent
+        class FooAT20 < Formula
+          url 'http://example.com/foo-2.0.tgz'
+          conflicts_with "mysql", "mariadb", "percona-server",
+                           :because => "both install plugins"
+        end
+      EOS
+
+      msg = <<-EOS.undent
+            Versioned formulae should not use `conflicts_with`.
+            Use `keg_only :versioned_formula` instead.
+      EOS
+      expected_offenses = [{  message: msg,
+                              severity: :convention,
+                              line: 3,
+                              column: 2,
+                              source: source }]
+
+      inspect_source(cop, source)
+
+      expected_offenses.zip(cop.offenses).each do |expected, actual|
+        expect_offense(expected, actual)
+      end
+    end
+
+    it "no conflicts_with" do
+      source = <<-EOS.undent
+        class FooAT20 < Formula
+          url 'http://example.com/foo-2.0.tgz'
+          desc 'Bar'
+        end
+      EOS
+      inspect_source(cop, source)
+      expect(cop.offenses).to eq([])
+    end
+  end
+end