Remove the ruby gRPC auth implementation

8 files changed, 0 insertions, 618 deletions

diff --git a/src/ruby/lib/grpc.rb b/src/ruby/lib/grpc.rb
index a2a609f59e..dd02ef7666 100644
--- a/src/ruby/lib/grpc.rb
+++ b/src/ruby/lib/grpc.rb
@@ -27,8 +27,6 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-require 'grpc/auth/compute_engine.rb'
-require 'grpc/auth/service_account.rb'
 require 'grpc/errors'
 require 'grpc/grpc'
 require 'grpc/logconfig'
diff --git a/src/ruby/lib/grpc/auth/compute_engine.rb b/src/ruby/lib/grpc/auth/compute_engine.rb
deleted file mode 100644
index 5cb1e1a4dc..0000000000
--- a/src/ruby/lib/grpc/auth/compute_engine.rb
+++ /dev/null
@@ -1,67 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * 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.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
-# OWNER 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.
-
-require 'faraday'
-require 'grpc/auth/signet'
-
-module GRPC
-  # Module Auth provides classes that provide Google-specific authentication
-  # used to access Google gRPC services.
-  module Auth
-    # Extends Signet::OAuth2::Client so that the auth token is obtained from
-    # the GCE metadata server.
-    class GCECredentials < Signet::OAuth2::Client
-      COMPUTE_AUTH_TOKEN_URI = 'http://metadata/computeMetadata/v1/'\
-                               'instance/service-accounts/default/token'
-      COMPUTE_CHECK_URI = 'http://metadata.google.internal'
-
-      # Detect if this appear to be a GCE instance, by checking if metadata
-      # is available
-      def self.on_gce?(options = {})
-        c = options[:connection] || Faraday.default_connection
-        resp = c.get(COMPUTE_CHECK_URI)
-        return false unless resp.status == 200
-        return false unless resp.headers.key?('Metadata-Flavor')
-        return resp.headers['Metadata-Flavor'] == 'Google'
-      rescue Faraday::ConnectionFailed
-        return false
-      end
-
-      # Overrides the super class method to change how access tokens are
-      # fetched.
-      def fetch_access_token(options = {})
-        c = options[:connection] || Faraday.default_connection
-        c.headers = { 'Metadata-Flavor' => 'Google' }
-        resp = c.get(COMPUTE_AUTH_TOKEN_URI)
-        Signet::OAuth2.parse_credentials(resp.body,
-                                         resp.headers['content-type'])
-      end
-    end
-  end
-end
diff --git a/src/ruby/lib/grpc/auth/service_account.rb b/src/ruby/lib/grpc/auth/service_account.rb
deleted file mode 100644
index 14b81a9e03..0000000000
--- a/src/ruby/lib/grpc/auth/service_account.rb
+++ /dev/null
@@ -1,66 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * 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.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
-# OWNER 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.
-
-require 'grpc/auth/signet'
-require 'multi_json'
-require 'openssl'
-
-# Reads the private key and client email fields from service account JSON key.
-def read_json_key(json_key_io)
-  json_key = MultiJson.load(json_key_io.read)
-  fail 'missing client_email' unless json_key.key?('client_email')
-  fail 'missing private_key' unless json_key.key?('private_key')
-  [json_key['private_key'], json_key['client_email']]
-end
-
-module GRPC
-  # Module Auth provides classes that provide Google-specific authentication
-  # used to access Google gRPC services.
-  module Auth
-    # Authenticates requests using Google's Service Account credentials.
-    # (cf https://developers.google.com/accounts/docs/OAuth2ServiceAccount)
-    class ServiceAccountCredentials < Signet::OAuth2::Client
-      TOKEN_CRED_URI = 'https://www.googleapis.com/oauth2/v3/token'
-      AUDIENCE = TOKEN_CRED_URI
-
-      # Initializes a ServiceAccountCredentials.
-      #
-      # @param scope [string|array] the scope(s) to access
-      # @param json_key_io [IO] an IO from which the JSON key can be read
-      def initialize(scope, json_key_io)
-        private_key, client_email = read_json_key(json_key_io)
-        super(token_credential_uri: TOKEN_CRED_URI,
-              audience: AUDIENCE,
-              scope: scope,
-              issuer: client_email,
-              signing_key: OpenSSL::PKey::RSA.new(private_key))
-      end
-    end
-  end
-end
diff --git a/src/ruby/lib/grpc/auth/signet.rb b/src/ruby/lib/grpc/auth/signet.rb
deleted file mode 100644
index a8bce1255c..0000000000
--- a/src/ruby/lib/grpc/auth/signet.rb
+++ /dev/null
@@ -1,67 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * 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.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
-# OWNER 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.
-
-require 'signet/oauth_2/client'
-
-module Signet
-  # Signet::OAuth2 supports OAuth2 authentication.
-  module OAuth2
-    AUTH_METADATA_KEY = :Authorization
-    # Signet::OAuth2::Client creates an OAuth2 client
-    #
-    # Here client is re-opened to add the #apply and #apply! methods which
-    # update a hash map with the fetched authentication token
-    #
-    # Eventually, this change may be merged into signet itself, or some other
-    # package that provides Google-specific auth via signet, and this extension
-    # will be unnecessary.
-    class Client
-      # Updates a_hash updated with the authentication token
-      def apply!(a_hash, opts = {})
-        # fetch the access token there is currently not one, or if the client
-        # has expired
-        fetch_access_token!(opts) if access_token.nil? || expired?
-        a_hash[AUTH_METADATA_KEY] = "Bearer #{access_token}"
-      end
-
-      # Returns a clone of a_hash updated with the authentication token
-      def apply(a_hash, opts = {})
-        a_copy = a_hash.clone
-        apply!(a_copy, opts)
-        a_copy
-      end
-
-      # Returns a reference to the #apply method, suitable for passing as
-      # a closure
-      def updater_proc
-        lambda(&method(:apply))
-      end
-    end
-  end
-end
diff --git a/src/ruby/spec/auth/apply_auth_examples.rb b/src/ruby/spec/auth/apply_auth_examples.rb
deleted file mode 100644
index 09b393026f..0000000000
--- a/src/ruby/spec/auth/apply_auth_examples.rb
+++ /dev/null
@@ -1,163 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * 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.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
-# OWNER 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.
-
-spec_dir = File.expand_path(File.join(File.dirname(__FILE__)))
-$LOAD_PATH.unshift(spec_dir)
-$LOAD_PATH.uniq!
-
-require 'faraday'
-require 'spec_helper'
-
-def build_json_response(payload)
-  [200,
-   { 'Content-Type' => 'application/json; charset=utf-8' },
-   MultiJson.dump(payload)]
-end
-
-WANTED_AUTH_KEY = :Authorization
-
-shared_examples 'apply/apply! are OK' do
-  # tests that use these examples need to define
-  #
-  # @client which should be an auth client
-  #
-  # @make_auth_stubs, which should stub out the expected http behaviour of the
-  # auth client
-  describe '#fetch_access_token' do
-    it 'should set access_token to the fetched value' do
-      token = '1/abcdef1234567890'
-      stubs = make_auth_stubs with_access_token: token
-      c = Faraday.new do |b|
-        b.adapter(:test, stubs)
-      end
-
-      @client.fetch_access_token!(connection: c)
-      expect(@client.access_token).to eq(token)
-      stubs.verify_stubbed_calls
-    end
-  end
-
-  describe '#apply!' do
-    it 'should update the target hash with fetched access token' do
-      token = '1/abcdef1234567890'
-      stubs = make_auth_stubs with_access_token: token
-      c = Faraday.new do |b|
-        b.adapter(:test, stubs)
-      end
-
-      md = { foo: 'bar' }
-      @client.apply!(md, connection: c)
-      want = { :foo => 'bar', WANTED_AUTH_KEY => "Bearer #{token}" }
-      expect(md).to eq(want)
-      stubs.verify_stubbed_calls
-    end
-  end
-
-  describe 'updater_proc' do
-    it 'should provide a proc that updates a hash with the access token' do
-      token = '1/abcdef1234567890'
-      stubs = make_auth_stubs with_access_token: token
-      c = Faraday.new do |b|
-        b.adapter(:test, stubs)
-      end
-
-      md = { foo: 'bar' }
-      the_proc = @client.updater_proc
-      got = the_proc.call(md, connection: c)
-      want = { :foo => 'bar', WANTED_AUTH_KEY => "Bearer #{token}" }
-      expect(got).to eq(want)
-      stubs.verify_stubbed_calls
-    end
-  end
-
-  describe '#apply' do
-    it 'should not update the original hash with the access token' do
-      token = '1/abcdef1234567890'
-      stubs = make_auth_stubs with_access_token: token
-      c = Faraday.new do |b|
-        b.adapter(:test, stubs)
-      end
-
-      md = { foo: 'bar' }
-      @client.apply(md, connection: c)
-      want = { foo: 'bar' }
-      expect(md).to eq(want)
-      stubs.verify_stubbed_calls
-    end
-
-    it 'should add the token to the returned hash' do
-      token = '1/abcdef1234567890'
-      stubs = make_auth_stubs with_access_token: token
-      c = Faraday.new do |b|
-        b.adapter(:test, stubs)
-      end
-
-      md = { foo: 'bar' }
-      got = @client.apply(md, connection: c)
-      want = { :foo => 'bar', WANTED_AUTH_KEY => "Bearer #{token}" }
-      expect(got).to eq(want)
-      stubs.verify_stubbed_calls
-    end
-
-    it 'should not fetch a new token if the current is not expired' do
-      token = '1/abcdef1234567890'
-      stubs = make_auth_stubs with_access_token: token
-      c = Faraday.new do |b|
-        b.adapter(:test, stubs)
-      end
-
-      n = 5 # arbitrary
-      n.times do |_t|
-        md = { foo: 'bar' }
-        got = @client.apply(md, connection: c)
-        want = { :foo => 'bar', WANTED_AUTH_KEY => "Bearer #{token}" }
-        expect(got).to eq(want)
-      end
-      stubs.verify_stubbed_calls
-    end
-
-    it 'should fetch a new token if the current one is expired' do
-      token_1 = '1/abcdef1234567890'
-      token_2 = '2/abcdef1234567890'
-
-      [token_1, token_2].each do |t|
-        stubs = make_auth_stubs with_access_token: t
-        c = Faraday.new do |b|
-          b.adapter(:test, stubs)
-        end
-        md = { foo: 'bar' }
-        got = @client.apply(md, connection: c)
-        want = { :foo => 'bar', WANTED_AUTH_KEY => "Bearer #{t}" }
-        expect(got).to eq(want)
-        stubs.verify_stubbed_calls
-        @client.expires_at -= 3601 # default is to expire in 1hr
-      end
-    end
-  end
-end
diff --git a/src/ruby/spec/auth/compute_engine_spec.rb b/src/ruby/spec/auth/compute_engine_spec.rb
deleted file mode 100644
index c43214d086..0000000000
--- a/src/ruby/spec/auth/compute_engine_spec.rb
+++ /dev/null
@@ -1,108 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * 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.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
-# OWNER 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.
-
-spec_dir = File.expand_path(File.join(File.dirname(__FILE__)))
-$LOAD_PATH.unshift(spec_dir)
-$LOAD_PATH.uniq!
-
-require 'apply_auth_examples'
-require 'faraday'
-require 'grpc/auth/compute_engine'
-require 'spec_helper'
-
-describe GRPC::Auth::GCECredentials do
-  MD_URI = '/computeMetadata/v1/instance/service-accounts/default/token'
-  GCECredentials = GRPC::Auth::GCECredentials
-
-  before(:example) do
-    @client = GCECredentials.new
-  end
-
-  def make_auth_stubs(with_access_token: '')
-    Faraday::Adapter::Test::Stubs.new do |stub|
-      stub.get(MD_URI) do |env|
-        headers = env[:request_headers]
-        expect(headers['Metadata-Flavor']).to eq('Google')
-        build_json_response(
-            'access_token' => with_access_token,
-            'token_type' => 'Bearer',
-            'expires_in' => 3600)
-      end
-    end
-  end
-
-  it_behaves_like 'apply/apply! are OK'
-
-  describe '#on_gce?' do
-    it 'should be true when Metadata-Flavor is Google' do
-      stubs = Faraday::Adapter::Test::Stubs.new do |stub|
-        stub.get('/') do |_env|
-          [200,
-           { 'Metadata-Flavor' => 'Google' },
-           '']
-        end
-      end
-      c = Faraday.new do |b|
-        b.adapter(:test, stubs)
-      end
-      expect(GCECredentials.on_gce?(connection: c)).to eq(true)
-      stubs.verify_stubbed_calls
-    end
-
-    it 'should be false when Metadata-Flavor is not Google' do
-      stubs = Faraday::Adapter::Test::Stubs.new do |stub|
-        stub.get('/') do |_env|
-          [200,
-           { 'Metadata-Flavor' => 'NotGoogle' },
-           '']
-        end
-      end
-      c = Faraday.new do |b|
-        b.adapter(:test, stubs)
-      end
-      expect(GCECredentials.on_gce?(connection: c)).to eq(false)
-      stubs.verify_stubbed_calls
-    end
-
-    it 'should be false if the response is not 200' do
-      stubs = Faraday::Adapter::Test::Stubs.new do |stub|
-        stub.get('/') do |_env|
-          [404,
-           { 'Metadata-Flavor' => 'Google' },
-           '']
-        end
-      end
-      c = Faraday.new do |b|
-        b.adapter(:test, stubs)
-      end
-      expect(GCECredentials.on_gce?(connection: c)).to eq(false)
-      stubs.verify_stubbed_calls
-    end
-  end
-end
diff --git a/src/ruby/spec/auth/service_account_spec.rb b/src/ruby/spec/auth/service_account_spec.rb
deleted file mode 100644
index 2f14a1ae05..0000000000
--- a/src/ruby/spec/auth/service_account_spec.rb
+++ /dev/null
@@ -1,75 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * 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.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
-# OWNER 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.
-
-spec_dir = File.expand_path(File.join(File.dirname(__FILE__)))
-$LOAD_PATH.unshift(spec_dir)
-$LOAD_PATH.uniq!
-
-require 'apply_auth_examples'
-require 'grpc/auth/service_account'
-require 'jwt'
-require 'multi_json'
-require 'openssl'
-require 'spec_helper'
-
-describe GRPC::Auth::ServiceAccountCredentials do
-  before(:example) do
-    @key = OpenSSL::PKey::RSA.new(2048)
-    cred_json = {
-      private_key_id: 'a_private_key_id',
-      private_key: @key.to_pem,
-      client_email: 'app@developer.gserviceaccount.com',
-      client_id: 'app.apps.googleusercontent.com',
-      type: 'service_account'
-    }
-    cred_json_text = MultiJson.dump(cred_json)
-    @client = GRPC::Auth::ServiceAccountCredentials.new(
-        'https://www.googleapis.com/auth/userinfo.profile',
-        StringIO.new(cred_json_text))
-  end
-
-  def make_auth_stubs(with_access_token: '')
-    Faraday::Adapter::Test::Stubs.new do |stub|
-      stub.post('/oauth2/v3/token') do |env|
-        params = Addressable::URI.form_unencode(env[:body])
-        _claim, _header = JWT.decode(params.assoc('assertion').last,
-                                     @key.public_key)
-        want = ['grant_type', 'urn:ietf:params:oauth:grant-type:jwt-bearer']
-        expect(params.assoc('grant_type')).to eq(want)
-        build_json_response(
-          'access_token' => with_access_token,
-          'token_type' => 'Bearer',
-          'expires_in' => 3600
-        )
-      end
-    end
-  end
-
-  it_behaves_like 'apply/apply! are OK'
-end
diff --git a/src/ruby/spec/auth/signet_spec.rb b/src/ruby/spec/auth/signet_spec.rb
deleted file mode 100644
index 1712edf296..0000000000
--- a/src/ruby/spec/auth/signet_spec.rb
+++ /dev/null
@@ -1,70 +0,0 @@
-# Copyright 2015, Google Inc.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without
-# modification, are permitted provided that the following conditions are
-# met:
-#
-#     * Redistributions of source code must retain the above copyright
-# notice, this list of conditions and the following disclaimer.
-#     * 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.
-#     * Neither the name of Google Inc. nor the names of its
-# contributors may be used to endorse or promote products derived from
-# this software without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT
-# OWNER 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.
-
-spec_dir = File.expand_path(File.join(File.dirname(__FILE__)))
-$LOAD_PATH.unshift(spec_dir)
-$LOAD_PATH.uniq!
-
-require 'apply_auth_examples'
-require 'grpc/auth/signet'
-require 'jwt'
-require 'openssl'
-require 'spec_helper'
-
-describe Signet::OAuth2::Client do
-  before(:example) do
-    @key = OpenSSL::PKey::RSA.new(2048)
-    @client = Signet::OAuth2::Client.new(
-        token_credential_uri: 'https://accounts.google.com/o/oauth2/token',
-        scope: 'https://www.googleapis.com/auth/userinfo.profile',
-        issuer: 'app@example.com',
-        audience: 'https://accounts.google.com/o/oauth2/token',
-        signing_key: @key
-      )
-  end
-
-  def make_auth_stubs(with_access_token: '')
-    Faraday::Adapter::Test::Stubs.new do |stub|
-      stub.post('/o/oauth2/token') do |env|
-        params = Addressable::URI.form_unencode(env[:body])
-        _claim, _header = JWT.decode(params.assoc('assertion').last,
-                                     @key.public_key)
-        want = ['grant_type', 'urn:ietf:params:oauth:grant-type:jwt-bearer']
-        expect(params.assoc('grant_type')).to eq(want)
-        build_json_response(
-          'access_token' => with_access_token,
-          'token_type' => 'Bearer',
-          'expires_in' => 3600
-        )
-      end
-    end
-  end
-
-  it_behaves_like 'apply/apply! are OK'
-end