diagnostic tests

Closes Homebrew/homebrew#47760.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>

Library/Homebrew/test/test_diagnostic.rb

@@ -0,0 +1,144 @@
+require "testing_env"
+require "fileutils"
+require "diagnostic"
+
+class DiagnosticChecksTest < Homebrew::TestCase
+  def setup
+    @env = ENV.to_hash
+    @checks = Homebrew::Diagnostic::Checks.new
+  end
+
+  def teardown
+    ENV.replace(@env)
+  end
+
+  def test_check_path_for_trailing_slashes
+    ENV["PATH"] += File::PATH_SEPARATOR + "/foo/bar/"
+    assert_match "Some directories in your path end in a slash",
+      @checks.check_path_for_trailing_slashes
+  end
+
+  def test_check_for_anaconda
+    mktmpdir do |path|
+      anaconda = "#{path}/anaconda"
+      python = "#{path}/python"
+      FileUtils.touch anaconda
+      File.open(python, "w") do |file|
+        file.write("#! #{`which bash`}\necho -n '#{python}'\n")
+      end
+      FileUtils.chmod 0777, anaconda
+      FileUtils.chmod 0777, python
+
+      ENV["PATH"] = path + File::PATH_SEPARATOR + ENV["PATH"]
+
+      assert_match "Anaconda",
+        @checks.check_for_anaconda
+    end
+  end
+
+  def test_check_access_homebrew_repository
+    mod = HOMEBREW_REPOSITORY.stat.mode & 0777
+    HOMEBREW_REPOSITORY.chmod 0555
+
+    assert_match "The #{HOMEBREW_REPOSITORY} is not writable.",
+      @checks.check_access_homebrew_repository
+  ensure
+    HOMEBREW_REPOSITORY.chmod mod
+  end
+
+  def test_check_access_logs
+    mod = HOMEBREW_LOGS.stat.mode & 0777
+    HOMEBREW_LOGS.chmod 0555
+
+    assert_match "#{HOMEBREW_LOGS} isn't writable.",
+      @checks.check_access_logs
+  ensure
+    HOMEBREW_LOGS.chmod mod
+  end
+
+  def test_check_access_cache
+    mod = HOMEBREW_CACHE.stat.mode & 0777
+    HOMEBREW_CACHE.chmod 0555
+    assert_match "#{HOMEBREW_CACHE} isn't writable.",
+      @checks.check_access_cache
+  ensure
+    HOMEBREW_CACHE.chmod mod
+  end
+
+  def test_check_access_cellar
+    mod = HOMEBREW_CELLAR.stat.mode & 0777
+    HOMEBREW_CELLAR.chmod 0555
+
+    assert_match "#{HOMEBREW_CELLAR} isn't writable.",
+      @checks.check_access_cellar
+  ensure
+    HOMEBREW_CELLAR.chmod mod
+  end
+
+  def test_check_access_prefix_opt
+    opt = HOMEBREW_PREFIX.join("opt")
+    opt.mkpath
+    opt.chmod 0555
+
+    assert_match "#{opt} isn't writable.",
+      @checks.check_access_prefix_opt
+  ensure
+    opt.unlink
+  end
+
+  def test_check_homebrew_prefix
+    # the integration tests are run in a special prefix
+    assert_match "Your Homebrew is not installed to /usr/local",
+      @checks.check_homebrew_prefix
+  end
+
+  def test_check_user_path_usr_bin_before_homebrew
+    bin = HOMEBREW_PREFIX/"bin"
+    sep = File::PATH_SEPARATOR
+    # ensure /usr/bin is before HOMEBREW_PREFIX/bin in the PATH
+    ENV["PATH"] = "/usr/bin#{sep}#{bin}#{sep}" +
+      ENV["PATH"].gsub(%r{(?:^|#{sep})(?:/usr/bin|#{bin})}, "")
+
+    # ensure there's at least one file with the same name in both /usr/bin/ and
+    # HOMEBREW_PREFIX/bin/
+    (bin/"#{File.basename Dir["/usr/bin/*"].first}").mkpath
+
+    assert_match "/usr/bin occurs before #{HOMEBREW_PREFIX}/bin",
+      @checks.check_user_path_1
+  ensure
+    bin.rmtree
+  end
+
+  def test_check_user_path_bin
+    ENV["PATH"] = ENV["PATH"].gsub \
+      %r{(?:^|#{File::PATH_SEPARATOR})#{HOMEBREW_PREFIX}/bin}, ""
+
+    assert_nil @checks.check_user_path_1
+    assert_match "Homebrew's bin was not found in your PATH.",
+      @checks.check_user_path_2
+  end
+
+  def test_check_user_path_sbin
+    sbin = HOMEBREW_PREFIX/"sbin"
+    ENV["PATH"] = "#{HOMEBREW_PREFIX}/bin#{File::PATH_SEPARATOR}" +
+      ENV["PATH"].gsub(%r{(?:^|#{File::PATH_SEPARATOR})#{sbin}}, "")
+    (sbin/"something").mkpath
+
+    assert_nil @checks.check_user_path_1
+    assert_nil @checks.check_user_path_2
+    assert_match "Homebrew's sbin was not found in your PATH",
+      @checks.check_user_path_3
+  ensure
+    sbin.rmtree
+  end
+
+  def test_check_user_curlrc
+    mktmpdir do |path|
+      FileUtils.touch "#{path}/.curlrc"
+      ENV["CURL_HOME"] = path
+
+      assert_match "You have a curlrc file",
+        @checks.check_user_curlrc
+    end
+  end
+end