DRY analyzer specs

spec/cc/engine/analyzers/javascript/main_spec.rb

@@ -5,16 +5,8 @@
 require 'flay'
 require 'tmpdir'
 
-RSpec.describe CC::Engine::Analyzers::Javascript::Main do
-  around do |example|
-    Dir.mktmpdir do |directory|
-      @code = directory
-
-      Dir.chdir(directory) do
-        example.run
-      end
-    end
-  end
+RSpec.describe CC::Engine::Analyzers::Javascript::Main, in_tmpdir: true do
+  include AnalyzerSpecHelpers
 
   describe "#run" do
     it "prints an issue" do
@@ -68,21 +60,6 @@
     expect(issues.length).to eq 1
   end
 
-  def create_source_file(path, content)
-    File.write(File.join(@code, path), content)
-  end
-
-  def run_engine(config = nil)
-    io = StringIO.new
-
-    engine = ::CC::Engine::Analyzers::Javascript::Main.new(engine_config: config)
-    reporter = ::CC::Engine::Analyzers::Reporter.new(double(concurrency: 2), engine, io)
-
-    reporter.run
-
-    io.string
-  end
-
   def engine_conf
     CC::Engine::Analyzers::EngineConfig.new({
       'config' => {

spec/cc/engine/analyzers/php/main_spec.rb

@@ -5,16 +5,8 @@
 require 'flay'
 require 'tmpdir'
 
-RSpec.describe CC::Engine::Analyzers::Php::Main do
-  around do |example|
-    Dir.mktmpdir do |directory|
-      @code = directory
-
-      Dir.chdir(directory) do
-        example.run
-      end
-    end
-  end
+RSpec.describe CC::Engine::Analyzers::Php::Main, in_tmpdir: true do
+  include AnalyzerSpecHelpers
 
   describe "#run" do
     it "prints an issue" do
@@ -58,21 +50,6 @@
     end
   end
 
-  def create_source_file(path, content)
-    File.write(File.join(@code, path), content)
-  end
-
-  def run_engine(config = nil)
-    io = StringIO.new
-
-    engine = ::CC::Engine::Analyzers::Php::Main.new(engine_config: config)
-    reporter = ::CC::Engine::Analyzers::Reporter.new(double(concurrency: 2), engine, io)
-
-    reporter.run
-
-    io.string
-  end
-
   def printed_issue
     issue = {"type":"issue","check_name":"Identical code","description":"Similar code found in 1 other location","categories":["Duplication"],"location":{"path":"foo.php","lines":{"begin":2,"end":6}},"remediation_points":176000,"other_locations":[{"path":"foo.php","lines":{"begin":10,"end":14}}],"content":{"body": read_up}}
     issue.to_json + "\0\n"

spec/cc/engine/analyzers/python/main_spec.rb

@@ -5,16 +5,8 @@
 require "flay"
 require "tmpdir"
 
-RSpec.describe CC::Engine::Analyzers::Python::Main do
-  around do |example|
-    Dir.mktmpdir do |directory|
-      @code = directory
-
-      Dir.chdir(directory) do
-        example.run
-      end
-    end
-  end
+RSpec.describe CC::Engine::Analyzers::Python::Main, in_tmpdir: true do
+  include AnalyzerSpecHelpers
 
   describe "#run" do
     it "prints an issue" do
@@ -46,21 +38,6 @@
     end
   end
 
-  def create_source_file(path, content)
-    File.write(File.join(@code, path), content)
-  end
-
-  def run_engine(config = nil)
-    io = StringIO.new
-
-    engine = ::CC::Engine::Analyzers::Python::Main.new(engine_config: config)
-    reporter = ::CC::Engine::Analyzers::Reporter.new(double(concurrency: 2), engine, io)
-
-    reporter.run
-
-    io.string
-  end
-
   def engine_conf
     CC::Engine::Analyzers::EngineConfig.new({
       "config" => {

spec/cc/engine/analyzers/ruby/main_spec.rb

@@ -4,16 +4,8 @@
 require 'flay'
 require 'tmpdir'
 
-RSpec.describe CC::Engine::Analyzers::Ruby::Main do
-  around do |example|
-    Dir.mktmpdir do |directory|
-      @code = directory
-
-      Dir.chdir(directory) do
-        example.run
-      end
-    end
-  end
+RSpec.describe CC::Engine::Analyzers::Ruby::Main, in_tmpdir: true do
+  include AnalyzerSpecHelpers
 
   describe "#run" do
     it "prints an issue" do
@@ -35,7 +27,7 @@
           end
       EORUBY
 
-      result = run_engine.strip
+      result = run_engine(engine_conf).strip
       json = JSON.parse(result)
 
       expect(json["type"]).to eq("issue")
@@ -60,24 +52,12 @@
       EORUBY
 
       expect {
-        expect(run_engine).to eq("")
+        expect(run_engine(engine_conf)).to eq("")
       }.to output(/Skipping file/).to_stderr
     end
   end
 
-  def create_source_file(path, content)
-    File.write(File.join(@code, path), content)
-  end
-
-  def run_engine(config = {})
-    io = StringIO.new
-
-    config = CC::Engine::Analyzers::EngineConfig.new(config)
-    engine = ::CC::Engine::Analyzers::Ruby::Main.new(engine_config: config)
-    reporter = ::CC::Engine::Analyzers::Reporter.new(double(concurrency: 2), engine, io)
-
-    reporter.run
-
-    io.string
+  def engine_conf
+    CC::Engine::Analyzers::EngineConfig.new({})
   end
 end

spec/spec_helper.rb

@@ -12,6 +12,16 @@
     mocks.verify_partial_doubles = true
   end
 
+  config.around(:example, :in_tmpdir) do |example|
+    Dir.mktmpdir do |directory|
+      @code = directory
+
+      Dir.chdir(directory) do
+        example.run
+      end
+    end
+  end
+
   config.order = :random
   config.disable_monkey_patching!
 end

spec/support/helpers/analyzer_spec_helpers.rb

@@ -0,0 +1,16 @@
+module AnalyzerSpecHelpers
+  def create_source_file(path, content)
+    File.write(File.join(@code, path), content)
+  end
+
+  def run_engine(config = nil)
+    io = StringIO.new
+
+    engine = described_class.new(engine_config: config)
+    reporter = ::CC::Engine::Analyzers::Reporter.new(double(concurrency: 2), engine, io)
+
+    reporter.run
+
+    io.string
+  end
+end