[BUG] [Ruby] `samples/client/petstore-security-test/ruby` contains syntax errors

[autopp]

Bug Report Checklist

• [x] Have you provided a full/minimal spec to reproduce the issue?
• [x] Have you validated the input using an OpenAPI validator (example)?
• [x] What's the version of OpenAPI Generator used?
• [x] Have you search for related issues/PRs?
• [x] What's the actual output vs expected output?
• [ ] [Optional] Bounty to sponsor the fix (example)

Description

Generated Ruby client code in samples/client/petstore-security-test/ruby contains syntax errors.

openapi-generator version

$ java -jar modules/openapi-generator-cli/target/openapi-generator-cli.jar version
4.0.0-SNAPSHOT

$ git log --oneline -n 1
b6c2266a14 (HEAD -> master, origin/master, origin/HEAD) [Rust][Client] Code format (#2042)

OpenAPI declaration file content or url

N/A

Command line used for generation

$ cd samples/client/petstore-security-test/ruby
$ rubocop

Steps to reproduce

1. Run the above command to check syntax of samples.

2. Get errors:

   $ rubocop -f s
   == lib/petstore/configuration.rb ==
   E:220: 46: Lint/Syntax: unexpected token tEQL
   (Using Ruby 2.2 parser; configure using TargetRubyVersion parameter, under AllCops)
   E:220: 54: Lint/Syntax: bare backslash only allowed before newline
   (Using Ruby 2.2 parser; configure using TargetRubyVersion parameter, under AllCops)
   E:220: 56: Lint/Syntax: bare backslash only allowed before newline
   (Using Ruby 2.2 parser; configure using TargetRubyVersion parameter, under AllCops)
   E:220: 59: Lint/Syntax: bare backslash only allowed before newline
   (Using Ruby 2.2 parser; configure using TargetRubyVersion parameter, under AllCops)
   E:220: 62: Lint/Syntax: bare backslash only allowed before newline
   (Using Ruby 2.2 parser; configure using TargetRubyVersion parameter, under AllCops)
   W:220: 68: Lint/Syntax: *' interpreted as argument prefix
   (Using Ruby 2.2 parser; configure using TargetRubyVersion parameter, under AllCops`)
   F:220: 69: Lint/Syntax: unterminated string meets end of file
   (Using Ruby 2.2 parser; configure using TargetRubyVersion parameter, under AllCops)
   
   15 files inspected, 7 offenses detected

Related issues/PRs

2101

Suggest a fix

The cause is here. I think that the embedded URL must be escaped.

[autopp]

I have found another place to embed {{url}}} as a string literal.

• Javascript
  • https://github.com/OpenAPITools/openapi-generator/blob/7bafde963c20d0c2d0f118c24cc68d324108da12/modules/openapi-generator/src/main/resources/Javascript/ApiClient.mustache#L625
  • https://github.com/OpenAPITools/openapi-generator/blob/7bafde963c20d0c2d0f118c24cc68d324108da12/modules/openapi-generator/src/main/resources/Javascript/es6/ApiClient.mustache#L606
  • https://github.com/OpenAPITools/openapi-generator/blob/7bafde963c20d0c2d0f118c24cc68d324108da12/modules/openapi-generator/src/main/resources/php/api.mustache#L615
• PHP
  • https://github.com/OpenAPITools/openapi-generator/blob/7bafde963c20d0c2d0f118c24cc68d324108da12/modules/openapi-generator/src/main/resources/php/Configuration.mustache#L433
• Python
  • https://github.com/OpenAPITools/openapi-generator/blob/7bafde963c20d0c2d0f118c24cc68d324108da12/modules/openapi-generator/src/main/resources/python/api.mustache#L86
  • https://github.com/OpenAPITools/openapi-generator/blob/7bafde963c20d0c2d0f118c24cc68d324108da12/modules/openapi-generator/src/main/resources/python/configuration.mustache#L281

I think that these client codes also have the same problem.

[autopp]

I think that the embedded URL must be escaped.

I also found a place where url is used as HTML escaped in comments. E.g.: https://github.com/OpenAPITools/openapi-generator/blob/1d08296f964c4dc947ac84c058b77f2de551fd66/modules/openapi-generator/src/main/resources/Java/api.mustache#L60 If all urls are escaped with escapeText, it seems to be a problem in such a case.

For string literals it may be better not to use url.