Support multiple files from the CLI command

Close #109

This change allows multiple files to be passed into the CLI with one call:

```
$ ./exe/dead_end **/*.rb
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
Syntax OK
```

CHANGELOG.md

@@ -1,5 +1,6 @@
 ## HEAD (unreleased)
 
+- Support checking multiple files from the CLI at once (https://github.com/zombocom/dead_end/pull/110)
 - Update links on readme and code of conduct (https://github.com/zombocom/dead_end/pull/107)
 
 ## 3.0.1

lib/dead_end/cli.rb

@@ -40,34 +40,36 @@ def call
         return if options[:exit]
       end
 
-      file_name = @argv.first
-      if file_name.nil?
+      if @argv.empty?
         @io.puts "No file given"
         @exit_obj.exit(1)
         return
       end
 
-      file = Pathname(file_name)
-      if !file.exist?
-        @io.puts "file not found: #{file.expand_path} "
-        @exit_obj.exit(1)
-        return
-      end
+      display_array = []
+      while (file_name = @argv.pop)
+        file = Pathname(file_name)
+        if !file.exist?
+          @io.puts "file not found: #{file.expand_path} "
+          @exit_obj.exit(1)
+          return
+        end
 
-      @io.puts "Record dir: #{options[:record_dir]}" if options[:record_dir]
+        @io.puts "Record dir: #{options[:record_dir]}" if options[:record_dir]
 
-      display = DeadEnd.call(
-        io: @io,
-        source: file.read,
-        filename: file.expand_path,
-        terminal: options.fetch(:terminal, DeadEnd::DEFAULT_VALUE),
-        record_dir: options[:record_dir]
-      )
+        display_array << DeadEnd.call(
+          io: @io,
+          source: file.read,
+          filename: file.expand_path,
+          terminal: options.fetch(:terminal, DeadEnd::DEFAULT_VALUE),
+          record_dir: options[:record_dir]
+        )
+      end
 
-      if display.document_ok?
-        @exit_obj.exit(0)
-      else
+      if display_array.empty? || display_array.detect { |d| !d.document_ok? }
         @exit_obj.exit(1)
+      else
+        @exit_obj.exit(0)
       end
     end
 

spec/unit/cli_spec.rb

@@ -42,6 +42,29 @@ def called?
       end
     end
 
+    it "works on multiple files" do
+      Dir.mktmpdir do |dir|
+        dir = Pathname(dir)
+        file_one = dir.join("script_one.rb")
+        file_one.write("puts 'lol'")
+
+        file_two = dir.join("script_two.rb")
+        file_two.write("puts 'lol'")
+
+        io = StringIO.new
+        exit_obj = FakeExit.new
+        Cli.new(
+          io: io,
+          argv: [file_one.to_s, file_two.to_s],
+          exit_obj: exit_obj
+        ).call
+
+        expect(exit_obj.called?).to be_truthy
+        expect(exit_obj.value).to eq(0)
+        expect(io.string.strip).to eq("Syntax OK\nSyntax OK")
+      end
+    end
+
     it "parses invalid code" do
       file = fixtures_dir.join("this_project_extra_def.rb.txt")
 
@@ -52,7 +75,6 @@ def called?
         argv: [file.to_s],
         exit_obj: exit_obj
       ).call
-
       out = io.string
       debug_display(out)