Add tests for rubygems package assembly

Reference: #5306

Signed-off-by: Ayan Sinha Mahapatra <asmahapatra@aboutcode.org>

Author: AyanSinhaMahapatra

tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract.json

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+---
+SHA256:
+  metadata.gz: 4be775fd0d4221af4703313be47b36df730b542f95063025472d82386bc6f949
+  data.tar.gz: aa1136bf72ebb55174ab30a3ddcaf908364a7e0cde743b952435a5ab59195d0a
+SHA512:
+  metadata.gz: 3b1da37df8ae7d0a8a40e41caed988f2b9f33c8ef147e66220e811adbc26199482189055badf0023bc5c4b8f201f2954a30cfa355cd7629604485c0424869f06
+  data.tar.gz: 7e50467d636c6a30b701d4778650355e6856660add1de37eef2519865977107e715cf19d3bcceff288ee068b5993908535243b6b799f7bc37bd7f41b8c270d37

tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/checksums.yaml.gz

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+Copyright (C) 1993-2013 Yukihiro Matsumoto. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.

tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/checksums.yaml.gz-extract/checksums.yaml.gz-extract

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+Ruby is copyrighted free software by Yukihiro Matsumoto <matz@netlab.jp>.
+You can redistribute it and/or modify it under either the terms of the
+2-clause BSDL (see the file BSDL), or the conditions below:
+
+  1. You may make and give away verbatim copies of the source form of the
+     software without restriction, provided that you duplicate all of the
+     original copyright notices and associated disclaimers.
+
+  2. You may modify your copy of the software in any way, provided that
+     you do at least ONE of the following:
+
+       a) place your modifications in the Public Domain or otherwise
+          make them Freely Available, such as by posting said
+	  modifications to Usenet or an equivalent medium, or by allowing
+	  the author to include your modifications in the software.
+
+       b) use the modified software only within your corporation or
+          organization.
+
+       c) give non-standard binaries non-standard names, with
+          instructions on where to get the original software distribution.
+
+       d) make other distribution arrangements with the author.
+
+  3. You may distribute the software in object code or binary form,
+     provided that you do at least ONE of the following:
+
+       a) distribute the binaries and library files of the software,
+	  together with instructions (in the manual page or equivalent)
+	  on where to get the original distribution.
+
+       b) accompany the distribution with the machine-readable source of
+	  the software.
+
+       c) give non-standard binaries non-standard names, with
+          instructions on where to get the original software distribution.
+
+       d) make other distribution arrangements with the author.
+
+  4. You may modify and include the part of the software into any other
+     software (possibly commercial).  But some files in the distribution
+     are not written by the author, so that they are not under these terms.
+
+     For the list of those files and their copying conditions, see the
+     file LEGAL.
+
+  5. The scripts and library files supplied as input to or produced as
+     output from the software do not automatically fall under the
+     copyright of the software, but belong to whomever generated them,
+     and may be sold commercially, and may be aggregated with this
+     software.
+
+  6. THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR
+     IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+     WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+     PURPOSE.

tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz

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+# -*- rdoc -*-
+
+= LEGAL NOTICE INFORMATION
+--------------------------
+
+All the files in this distribution are covered under either the Ruby's
+license (see the file COPYING) or public-domain except some files
+mentioned below.
+
+ext/json/ext/vendor/fpconv.h::
+  This file is adapted from https://github.com/night-shift/fpconv
+  It is licensed under Boost Software License 1.0.
+
+ext/json/ext/vendor/jeaiii-ltoa.h::
+  This file is adapted from https://github.com/jeaiii/itoa
+  It is licensed under the MIT License
+
+ext/json/ext/vendor/fast_float_parser.h::
+  This file is adapted from the Fast Float C++ library by The fast_float authors https://github.com/fastfloat/fast_float
+  It is licensed under the MIT License

tests/packagedcode/data/rubygems/package/json-3.0.2-java.gem-extract/data.tar.gz-extract/BSDL

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+# JSON implementation for Ruby
+
+[![CI](https://github.com/ruby/json/actions/workflows/ci.yml/badge.svg)](https://github.com/ruby/json/actions/workflows/ci.yml)
+
+## Description
+
+This is an implementation of the JSON specification according to RFC 7159
+http://www.ietf.org/rfc/rfc7159.txt .
+
+The JSON generator generate UTF-8 character sequences by default.
+If an :ascii\_only option with a true value is given, they escape all
+non-ASCII and control characters with \uXXXX escape sequences, and support
+UTF-16 surrogate pairs in order to be able to generate the whole range of
+unicode code points.
+
+All strings, that are to be encoded as JSON strings, should be UTF-8 byte
+sequences on the Ruby side.
+
+## Installation
+
+Install the gem and add to the application's Gemfile by executing:
+
+    $ bundle add json
+
+If bundler is not being used to manage dependencies, install the gem by executing:
+
+    $ gem install json
+
+## Basic Usage
+
+To use JSON you can
+
+```ruby
+require 'json'
+```
+
+Now you can parse a JSON document into a ruby data structure by calling
+
+```ruby
+JSON.parse(document)
+```
+
+If you want to generate a JSON document from a ruby data structure call
+```ruby
+JSON.generate(data)
+```
+
+You can also use the `pretty_generate` method (which formats the output more
+verbosely and nicely).
+
+## Casting non native types
+
+JSON documents can only support Hashes, Arrays, Strings, Integers and Floats.
+
+By default if you attempt to serialize something else, `JSON.generate` will
+search for a `#to_json` method on that object:
+
+```ruby
+Position = Struct.new(:latitude, :longitude) do
+  def to_json(state = nil, *)
+    JSON::State.from_state(state).generate({
+      latitude: latitude,
+      longitude: longitude,
+    })
+  end
+end
+
+JSON.generate([
+  Position.new(12323.234, 435345.233),
+  Position.new(23434.676, 159435.324),
+]) # => [{"latitude":12323.234,"longitude":435345.233},{"latitude":23434.676,"longitude":159435.324}]
+```
+
+If a `#to_json` method isn't defined on the object, `JSON.generate` will fallback to call `#to_s`:
+
+```ruby
+JSON.generate(Object.new) # => "#<Object:0x000000011e768b98>"
+```
+
+Both of these behavior can be disabled using the `strict: true` option:
+
+```ruby
+JSON.generate(Object.new, strict: true) # => Object not allowed in JSON (JSON::GeneratorError)
+JSON.generate(Position.new(1, 2), strict: true) # => Position not allowed in JSON (JSON::GeneratorError)
+```
+
+## JSON::Coder
+
+Since `#to_json` methods are global, it can sometimes be problematic if you need a given type to be
+serialized in different ways in different locations.
+
+Instead it is recommended to use the newer `JSON::Coder` API:
+
+```ruby
+module MyApp
+  API_JSON_CODER = JSON::Coder.new do |object, is_object_key|
+    case object
+    when Time
+      object.iso8601(3)
+    else
+      object
+    end
+  end
+end
+
+puts MyApp::API_JSON_CODER.dump(Time.now.utc) # => "2025-01-21T08:41:44.286Z"
+```
+
+The provided block is called for all objects that don't have a native JSON equivalent, and
+must return a Ruby object that has a native JSON equivalent.
+
+It is also called for objects that do have a JSON equivalent, but are used as Hash keys, for instance `{ 1 => 2}`,
+as well as for strings that aren't valid UTF-8:
+
+```ruby
+coder = JSON::Coder.new do |object, is_object_key|
+  case object
+  when String
+    if !object.valid_encoding? || object.encoding != Encoding::UTF_8
+      Base64.encode64(object)
+    else
+      object
+    end
+  else
+    object
+  end
+end
+```
+
+## Combining JSON fragments
+
+To combine JSON fragments into a bigger JSON document, you can use `JSON::Fragment`:
+
+```ruby
+posts_json = cache.fetch_multi(post_ids) do |post_id|
+  JSON.generate(Post.find(post_id))
+end
+posts_json.map! { |post_json| JSON::Fragment.new(post_json) }
+JSON.generate({ posts: posts_json, count: posts_json.count })
+```
+
+## Pretty Printing
+
+`JSON.generate` always creates the shortest possible string representation of a
+ruby data structure in one line. This is good for data storage or network
+protocols, but not so good for humans to read. Fortunately there's also
+`JSON.pretty_generate` that creates a more readable
+output:
+
+```ruby
+ puts JSON.pretty_generate([1, 2, {"a"=>3.141}, false, true, nil, 4..10])
+ [
+   1,
+   2,
+   {
+     "a": 3.141
+   },
+   false,
+   true,
+   null,
+   {
+     "json_class": "Range",
+     "data": [
+       4,
+       10,
+       false
+     ]
+   }
+ ]
+```
+
+## Security
+
+When parsing or serializing untrusted input, parser and generator options should never be user controlled.
+
+```ruby
+# Dangerous, DO NOT DO THIS.
+JSON.generate(params[:data], params[:options])
+```
+
+Security vulnerability reports relying on attacker controlled parsing or generator options will be handled as regular bug fixes.
+
+## Development
+
+### Prerequisites
+
+1. Clone the repository
+2. Install dependencies with `bundle install`
+
+### Testing
+
+The full test suite can be run with:
+
+```bash
+bundle exec rake test
+```
+
+### Release
+
+Update the `lib/json/version.rb` file.
+
+```
+rbenv shell 2.6.5
+rake build
+gem push pkg/json-2.3.0.gem
+
+rbenv shell jruby-9.2.9.0
+rake build
+gem push pkg/json-2.3.0-java.gem
+```
+
+## Author
+
+Florian Frank <mailto:flori@ping.de>
+
+## License
+
+Ruby License, see https://www.ruby-lang.org/en/about/license.txt.
+
+## Download
+
+The latest version of this library can be downloaded at
+
+* https://rubygems.org/gems/json
+
+Online Documentation should be located at
+
+* https://www.rubydoc.info/gems/json