💚 Fix specs for old Ruby

Author: pboling

spec/oauth2/access_token_spec.rb

@@ -389,15 +389,15 @@ def assert_initialized_token(target)
             let(:token) { "" }
 
             it "raises on initialize" do
-              block_is_expected.to raise_error(OAuth2::Error, {error: "OAuth2::AccessToken has no token", error_description: "Options are: {mode: :this_is_bad, raise_errors: true}"}.to_s)
+              block_is_expected.to raise_error(OAuth2::Error, {error: "OAuth2::AccessToken has no token", error_description: "Options are: #{{mode: :this_is_bad, raise_errors: true}}"}.to_s)
             end
           end
 
           context "when there is nil token" do
             let(:token) { nil }
 
             it "raises on initialize" do
-              block_is_expected.to raise_error(OAuth2::Error, {error: "OAuth2::AccessToken has no token", error_description: "Options are: {mode: :this_is_bad, raise_errors: true}"}.to_s)
+              block_is_expected.to raise_error(OAuth2::Error, {error: "OAuth2::AccessToken has no token", error_description: "Options are: #{{mode: :this_is_bad, raise_errors: true}}"}.to_s)
             end
           end
         end
@@ -603,7 +603,7 @@ def assert_initialized_token(target)
 
           context "when there is no refresh_token" do
             it "raises on initialize" do
-              block_is_expected.to raise_error(OAuth2::Error, {error: "OAuth2::AccessToken has no token", error_description: "Options are: {raise_errors: true}"}.to_s)
+              block_is_expected.to raise_error(OAuth2::Error, {error: "OAuth2::AccessToken has no token", error_description: "Options are: #{{raise_errors: true}}"}.to_s)
             end
           end
 
@@ -629,7 +629,7 @@ def assert_initialized_token(target)
 
           context "when there is no refresh_token" do
             it "raises on initialize" do
-              block_is_expected.to raise_error(OAuth2::Error, {error: "OAuth2::AccessToken has no token", error_description: "Options are: {raise_errors: true}"}.to_s)
+              block_is_expected.to raise_error(OAuth2::Error, {error: "OAuth2::AccessToken has no token", error_description: "Options are: #{{raise_errors: true}}"}.to_s)
             end
           end