More attempts to fix CI

.github/workflows/gh-pages.yml

@@ -1,5 +1,9 @@
 name: Github Pages (rdoc)
-on: [push]
+on:
+  push:
+    branches:
+      - main
+
 jobs:
   build-and-deploy:
     runs-on: ubuntu-latest

lib/syntax_tree/cli.rb

@@ -51,13 +51,15 @@ def handler
       def source
         handler.read(filepath)
       end
+
+      def writable?
+        File.writable?(filepath)
+      end
     end
 
     # An item of work that corresponds to a script content passed via the
     # command line.
     class ScriptItem
-      FILEPATH = :script
-
       attr_reader :source
 
       def initialize(source)
@@ -69,7 +71,30 @@ def handler
       end
 
       def filepath
-        FILEPATH
+        :script
+      end
+
+      def writable?
+        false
+      end
+    end
+
+    # An item of work that correspond to the content passed in via stdin.
+    class STDINItem
+      def handler
+        HANDLERS[".rb"]
+      end
+
+      def filepath
+        :stdin
+      end
+
+      def source
+        $stdin.read
+      end
+
+      def writable?
+        false
       end
     end
 
@@ -196,7 +221,7 @@ def run(item)
 
         source = item.source
         formatted = item.handler.format(source, options.print_width)
-        File.write(filepath, formatted) if item.filepath != :script
+        File.write(filepath, formatted) if item.writable?
 
         color = source == formatted ? Color.gray(filepath) : filepath
         delta = ((Time.now - start) * 1000).round
@@ -386,7 +411,7 @@ def run(argv)
             return 1
           end
 
-        # If we're not reading from stdin and the user didn't supply and
+        # If we're not reading from stdin and the user didn't supply any
         # filepaths to be read, then we exit with the usage message.
         if $stdin.tty? && arguments.empty? && options.scripts.empty?
           warn(HELP)
@@ -403,12 +428,13 @@ def run(argv)
             Dir
               .glob(pattern)
               .each do |filepath|
-                queue << FileItem.new(filepath) if File.file?(filepath)
+                queue << FileItem.new(filepath) if File.readable?(filepath)
               end
           end
+
           options.scripts.each { |script| queue << ScriptItem.new(script) }
         else
-          queue << ScriptItem.new($stdin.read)
+          queue << STDINItem.new
         end
 
         # At the end, we're going to return whether or not this worker ever

test/cli_test.rb

@@ -117,7 +117,7 @@ def test_help_default
     end
 
     def test_no_arguments
-      $stdin.stub(:tty?, true) do
+      with_tty do
         *, stderr = capture_io { SyntaxTree::CLI.run(["check"]) }
         assert_includes(stderr, "stree help")
       end
@@ -134,13 +134,17 @@ def test_no_arguments_no_tty
     end
 
     def test_inline_script
-      stdio, = capture_io { SyntaxTree::CLI.run(%w[format -e 1+1]) }
-      assert_equal("1 + 1\n", stdio)
+      with_tty do
+        stdio, = capture_io { SyntaxTree::CLI.run(%w[format -e 1+1]) }
+        assert_equal("1 + 1\n", stdio)
+      end
     end
 
     def test_multiple_inline_scripts
-      stdio, = capture_io { SyntaxTree::CLI.run(%w[format -e 1+1 -e 2+2]) }
-      assert_equal("1 + 1\n2 + 2\n", stdio)
+      with_tty do
+        stdio, = capture_io { SyntaxTree::CLI.run(%w[format -e 1+1 -e 2+2]) }
+        assert_equal("1 + 1\n2 + 2\n", stdio)
+      end
     end
 
     def test_generic_error
@@ -241,8 +245,10 @@ def run_cli(command, *args, contents: :default)
 
       status = nil
       stdio, stderr =
-        capture_io do
-          status = SyntaxTree::CLI.run([command, *args, tempfile.path])
+        with_tty do
+          capture_io do
+            status = SyntaxTree::CLI.run([command, *args, tempfile.path])
+          end
         end
 
       Result.new(status: status, stdio: stdio, stderr: stderr)
@@ -251,6 +257,10 @@ def run_cli(command, *args, contents: :default)
       tempfile.unlink
     end
 
+    def with_tty(&block)
+      $stdin.stub(:tty?, true, &block)
+    end
+
     def with_config_file(contents)
       filepath = File.join(Dir.pwd, SyntaxTree::CLI::ConfigFile::FILENAME)
       File.write(filepath, contents)