From dcf5d8d79b5958cd904e0ef27af94f27108250b9 Mon Sep 17 00:00:00 2001
From: Markus Reiter <me@reitermark.us>
Date: Sun, 5 Aug 2018 18:23:08 +0200
Subject: [PATCH] Add test for `migrate_cache_entries_to_double_dashes`.

---
 .../test/cmd/update-report/reporter_spec.rb   | 129 +++++++++++++++++
 .../Homebrew/test/cmd/update-report_spec.rb   | 133 ++----------------
 2 files changed, 144 insertions(+), 118 deletions(-)
 create mode 100644 Library/Homebrew/test/cmd/update-report/reporter_spec.rb

diff --git a/Library/Homebrew/test/cmd/update-report/reporter_spec.rb b/Library/Homebrew/test/cmd/update-report/reporter_spec.rb
new file mode 100644
index 0000000000..50b33bf70a
--- /dev/null
+++ b/Library/Homebrew/test/cmd/update-report/reporter_spec.rb
@@ -0,0 +1,129 @@
+require "cmd/update-report"
+require "formula_versions"
+require "yaml"
+
+describe Reporter do
+  def perform_update(fixture_name = "")
+    allow(Formulary).to receive(:factory).and_return(double(pkg_version: "1.0"))
+    allow(FormulaVersions).to receive(:new).and_return(double(formula_at_revision: "2.0"))
+
+    diff = YAML.load_file("#{TEST_FIXTURE_DIR}/updater_fixture.yaml")[fixture_name]
+    allow(subject).to receive(:diff).and_return(diff || "")
+
+    hub.add(subject) if subject.updated?
+  end
+
+  subject { reporter_class.new(tap) }
+
+  let(:reporter_class) do
+    Class.new(described_class) do
+      def initialize(tap)
+        @tap = tap
+
+        ENV["HOMEBREW_UPDATE_BEFORE#{tap.repo_var}"] = "12345678"
+        ENV["HOMEBREW_UPDATE_AFTER#{tap.repo_var}"] = "abcdef00"
+
+        super(tap)
+      end
+    end
+  end
+
+  let(:tap) { CoreTap.new }
+  let(:hub) { ReporterHub.new }
+
+  specify "without revision variable" do
+    ENV.delete_if { |k, _v| k.start_with? "HOMEBREW_UPDATE" }
+
+    expect {
+      described_class.new(tap)
+    }.to raise_error(Reporter::ReporterRevisionUnsetError)
+  end
+
+  specify "without any changes" do
+    perform_update
+    expect(hub).to be_empty
+  end
+
+  specify "without Formula changes" do
+    perform_update("update_git_diff_output_without_formulae_changes")
+
+    expect(hub.select_formula(:M)).to be_empty
+    expect(hub.select_formula(:A)).to be_empty
+    expect(hub.select_formula(:D)).to be_empty
+  end
+
+  specify "with Formula changes" do
+    perform_update("update_git_diff_output_with_formulae_changes")
+
+    expect(hub.select_formula(:M)).to eq(%w[xar yajl])
+    expect(hub.select_formula(:A)).to eq(%w[antiword bash-completion ddrescue dict lua])
+  end
+
+  specify "with removed Formulae" do
+    perform_update("update_git_diff_output_with_removed_formulae")
+
+    expect(hub.select_formula(:D)).to eq(%w[libgsasl])
+  end
+
+  specify "with changed file type" do
+    perform_update("update_git_diff_output_with_changed_filetype")
+
+    expect(hub.select_formula(:M)).to eq(%w[elixir])
+    expect(hub.select_formula(:A)).to eq(%w[libbson])
+    expect(hub.select_formula(:D)).to eq(%w[libgsasl])
+  end
+
+  specify "with renamed Formula" do
+    allow(tap).to receive(:formula_renames).and_return("cv" => "progress")
+    perform_update("update_git_diff_output_with_formula_rename")
+
+    expect(hub.select_formula(:A)).to be_empty
+    expect(hub.select_formula(:D)).to be_empty
+    expect(hub.select_formula(:R)).to eq([["cv", "progress"]])
+  end
+
+  context "when updating a Tap other than the core Tap" do
+    let(:tap) { Tap.new("foo", "bar") }
+
+    before do
+      (tap.path/"Formula").mkpath
+    end
+
+    after do
+      tap.path.parent.rmtree
+    end
+
+    specify "with restructured Tap" do
+      perform_update("update_git_diff_output_with_restructured_tap")
+
+      expect(hub.select_formula(:A)).to be_empty
+      expect(hub.select_formula(:D)).to be_empty
+      expect(hub.select_formula(:R)).to be_empty
+    end
+
+    specify "with renamed Formula and restructured Tap" do
+      allow(tap).to receive(:formula_renames).and_return("xchat" => "xchat2")
+      perform_update("update_git_diff_output_with_formula_rename_and_restructuring")
+
+      expect(hub.select_formula(:A)).to be_empty
+      expect(hub.select_formula(:D)).to be_empty
+      expect(hub.select_formula(:R)).to eq([%w[foo/bar/xchat foo/bar/xchat2]])
+    end
+
+    specify "with simulated 'homebrew/php' restructuring" do
+      perform_update("update_git_diff_simulate_homebrew_php_restructuring")
+
+      expect(hub.select_formula(:A)).to be_empty
+      expect(hub.select_formula(:D)).to be_empty
+      expect(hub.select_formula(:R)).to be_empty
+    end
+
+    specify "with Formula changes" do
+      perform_update("update_git_diff_output_with_tap_formulae_changes")
+
+      expect(hub.select_formula(:A)).to eq(%w[foo/bar/lua])
+      expect(hub.select_formula(:M)).to eq(%w[foo/bar/git])
+      expect(hub.select_formula(:D)).to be_empty
+    end
+  end
+end
diff --git a/Library/Homebrew/test/cmd/update-report_spec.rb b/Library/Homebrew/test/cmd/update-report_spec.rb
index 50b33bf70a..dbe1938cdc 100644
--- a/Library/Homebrew/test/cmd/update-report_spec.rb
+++ b/Library/Homebrew/test/cmd/update-report_spec.rb
@@ -1,129 +1,26 @@
 require "cmd/update-report"
-require "formula_versions"
-require "yaml"
 
-describe Reporter do
-  def perform_update(fixture_name = "")
-    allow(Formulary).to receive(:factory).and_return(double(pkg_version: "1.0"))
-    allow(FormulaVersions).to receive(:new).and_return(double(formula_at_revision: "2.0"))
+describe "brew update-report" do
+  describe "::migrate_cache_entries_to_double_dashes" do
+    let(:legacy_cache_file) { HOMEBREW_CACHE/"foo-1.2.3.tar.gz" }
+    let(:renamed_cache_file) { HOMEBREW_CACHE/"foo--1.2.3.tar.gz" }
 
-    diff = YAML.load_file("#{TEST_FIXTURE_DIR}/updater_fixture.yaml")[fixture_name]
-    allow(subject).to receive(:diff).and_return(diff || "")
-
-    hub.add(subject) if subject.updated?
-  end
-
-  subject { reporter_class.new(tap) }
-
-  let(:reporter_class) do
-    Class.new(described_class) do
-      def initialize(tap)
-        @tap = tap
-
-        ENV["HOMEBREW_UPDATE_BEFORE#{tap.repo_var}"] = "12345678"
-        ENV["HOMEBREW_UPDATE_AFTER#{tap.repo_var}"] = "abcdef00"
-
-        super(tap)
-      end
-    end
-  end
-
-  let(:tap) { CoreTap.new }
-  let(:hub) { ReporterHub.new }
-
-  specify "without revision variable" do
-    ENV.delete_if { |k, _v| k.start_with? "HOMEBREW_UPDATE" }
-
-    expect {
-      described_class.new(tap)
-    }.to raise_error(Reporter::ReporterRevisionUnsetError)
-  end
-
-  specify "without any changes" do
-    perform_update
-    expect(hub).to be_empty
-  end
-
-  specify "without Formula changes" do
-    perform_update("update_git_diff_output_without_formulae_changes")
-
-    expect(hub.select_formula(:M)).to be_empty
-    expect(hub.select_formula(:A)).to be_empty
-    expect(hub.select_formula(:D)).to be_empty
-  end
-
-  specify "with Formula changes" do
-    perform_update("update_git_diff_output_with_formulae_changes")
-
-    expect(hub.select_formula(:M)).to eq(%w[xar yajl])
-    expect(hub.select_formula(:A)).to eq(%w[antiword bash-completion ddrescue dict lua])
-  end
-
-  specify "with removed Formulae" do
-    perform_update("update_git_diff_output_with_removed_formulae")
-
-    expect(hub.select_formula(:D)).to eq(%w[libgsasl])
-  end
-
-  specify "with changed file type" do
-    perform_update("update_git_diff_output_with_changed_filetype")
-
-    expect(hub.select_formula(:M)).to eq(%w[elixir])
-    expect(hub.select_formula(:A)).to eq(%w[libbson])
-    expect(hub.select_formula(:D)).to eq(%w[libgsasl])
-  end
-
-  specify "with renamed Formula" do
-    allow(tap).to receive(:formula_renames).and_return("cv" => "progress")
-    perform_update("update_git_diff_output_with_formula_rename")
-
-    expect(hub.select_formula(:A)).to be_empty
-    expect(hub.select_formula(:D)).to be_empty
-    expect(hub.select_formula(:R)).to eq([["cv", "progress"]])
-  end
-
-  context "when updating a Tap other than the core Tap" do
-    let(:tap) { Tap.new("foo", "bar") }
-
-    before do
-      (tap.path/"Formula").mkpath
+    before(:each) do
+      FileUtils.touch legacy_cache_file
     end
 
-    after do
-      tap.path.parent.rmtree
+    it "moves old files to use double dashes when upgrading from <= 1.7.1" do
+      Homebrew.migrate_cache_entries_to_double_dashes(Version.new("1.7.1"))
+
+      expect(legacy_cache_file).not_to exist
+      expect(renamed_cache_file).to exist
     end
 
-    specify "with restructured Tap" do
-      perform_update("update_git_diff_output_with_restructured_tap")
+    it "does not move files if upgrading from > 1.7.1" do
+      Homebrew.migrate_cache_entries_to_double_dashes(Version.new("1.7.2"))
 
-      expect(hub.select_formula(:A)).to be_empty
-      expect(hub.select_formula(:D)).to be_empty
-      expect(hub.select_formula(:R)).to be_empty
-    end
-
-    specify "with renamed Formula and restructured Tap" do
-      allow(tap).to receive(:formula_renames).and_return("xchat" => "xchat2")
-      perform_update("update_git_diff_output_with_formula_rename_and_restructuring")
-
-      expect(hub.select_formula(:A)).to be_empty
-      expect(hub.select_formula(:D)).to be_empty
-      expect(hub.select_formula(:R)).to eq([%w[foo/bar/xchat foo/bar/xchat2]])
-    end
-
-    specify "with simulated 'homebrew/php' restructuring" do
-      perform_update("update_git_diff_simulate_homebrew_php_restructuring")
-
-      expect(hub.select_formula(:A)).to be_empty
-      expect(hub.select_formula(:D)).to be_empty
-      expect(hub.select_formula(:R)).to be_empty
-    end
-
-    specify "with Formula changes" do
-      perform_update("update_git_diff_output_with_tap_formulae_changes")
-
-      expect(hub.select_formula(:A)).to eq(%w[foo/bar/lua])
-      expect(hub.select_formula(:M)).to eq(%w[foo/bar/git])
-      expect(hub.select_formula(:D)).to be_empty
+      expect(legacy_cache_file).to exist
+      expect(renamed_cache_file).not_to exist
     end
   end
 end