diff --git a/app/lib/provider_discovery.rb b/app/lib/provider_discovery.rb
index 3d0712a5..6d48cae2 100644
--- a/app/lib/provider_discovery.rb
+++ b/app/lib/provider_discovery.rb
@@ -31,7 +31,7 @@ class ProviderDiscovery < OEmbed::ProviderDiscovery
raise OEmbed::NotFound, url
end
- OEmbed::Provider.new(provider_endpoint, format || OEmbed::Formatter.default)
+ OEmbed::Provider.new(provider_endpoint, format)
end
end
end
diff --git a/spec/fixtures/requests/oembed_invalid_xml.html b/spec/fixtures/requests/oembed_invalid_xml.html
new file mode 100644
index 00000000..405834f1
--- /dev/null
+++ b/spec/fixtures/requests/oembed_invalid_xml.html
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
diff --git a/spec/fixtures/requests/oembed_json.html b/spec/fixtures/requests/oembed_json.html
new file mode 100644
index 00000000..773a4f92
--- /dev/null
+++ b/spec/fixtures/requests/oembed_json.html
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
diff --git a/spec/fixtures/requests/oembed_json_xml.html b/spec/fixtures/requests/oembed_json_xml.html
new file mode 100644
index 00000000..b5fc9bed
--- /dev/null
+++ b/spec/fixtures/requests/oembed_json_xml.html
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
diff --git a/spec/fixtures/requests/oembed_undiscoverable.html b/spec/fixtures/requests/oembed_undiscoverable.html
new file mode 100644
index 00000000..a4acdc47
--- /dev/null
+++ b/spec/fixtures/requests/oembed_undiscoverable.html
@@ -0,0 +1,5 @@
+
+
+
+
+
diff --git a/spec/fixtures/requests/oembed_xml.html b/spec/fixtures/requests/oembed_xml.html
new file mode 100644
index 00000000..5d7633e7
--- /dev/null
+++ b/spec/fixtures/requests/oembed_xml.html
@@ -0,0 +1,7 @@
+
+
+
+
+
+
+
diff --git a/spec/lib/provider_discovery_spec.rb b/spec/lib/provider_discovery_spec.rb
new file mode 100644
index 00000000..12e2616c
--- /dev/null
+++ b/spec/lib/provider_discovery_spec.rb
@@ -0,0 +1,118 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+describe ProviderDiscovery do
+ describe 'discover_provider' do
+ context 'when status code is 200 and MIME type is text/html' do
+ context 'Both of JSON and XML provider are discoverable' do
+ before do
+ stub_request(:get, 'https://host/oembed.html').to_return(
+ status: 200,
+ headers: { 'Content-Type': 'text/html' },
+ body: request_fixture('oembed_json_xml.html')
+ )
+ end
+
+ it 'returns new OEmbed::Provider for JSON provider if :format option is set to :json' do
+ provider = ProviderDiscovery.discover_provider('https://host/oembed.html', format: :json)
+ expect(provider.endpoint).to eq 'https://host/provider.json'
+ expect(provider.format).to eq :json
+ end
+
+ it 'returns new OEmbed::Provider for XML provider if :format option is set to :xml' do
+ provider = ProviderDiscovery.discover_provider('https://host/oembed.html', format: :xml)
+ expect(provider.endpoint).to eq 'https://host/provider.xml'
+ expect(provider.format).to eq :xml
+ end
+ end
+
+ context 'JSON provider is discoverable while XML provider is not' do
+ before do
+ stub_request(:get, 'https://host/oembed.html').to_return(
+ status: 200,
+ headers: { 'Content-Type': 'text/html' },
+ body: request_fixture('oembed_json.html')
+ )
+ end
+
+ it 'returns new OEmbed::Provider for JSON provider' do
+ provider = ProviderDiscovery.discover_provider('https://host/oembed.html')
+ expect(provider.endpoint).to eq 'https://host/provider.json'
+ expect(provider.format).to eq :json
+ end
+ end
+
+ context 'XML provider is discoverable while JSON provider is not' do
+ before do
+ stub_request(:get, 'https://host/oembed.html').to_return(
+ status: 200,
+ headers: { 'Content-Type': 'text/html' },
+ body: request_fixture('oembed_xml.html')
+ )
+ end
+
+ it 'returns new OEmbed::Provider for XML provider' do
+ provider = ProviderDiscovery.discover_provider('https://host/oembed.html')
+ expect(provider.endpoint).to eq 'https://host/provider.xml'
+ expect(provider.format).to eq :xml
+ end
+ end
+
+ context 'Invalid XML provider is discoverable while JSON provider is not' do
+ before do
+ stub_request(:get, 'https://host/oembed.html').to_return(
+ status: 200,
+ headers: { 'Content-Type': 'text/html' },
+ body: request_fixture('oembed_invalid_xml.html')
+ )
+ end
+
+ it 'raises OEmbed::NotFound' do
+ expect { ProviderDiscovery.discover_provider('https://host/oembed.html') }.to raise_error OEmbed::NotFound
+ end
+ end
+
+ context 'Neither of JSON and XML provider is discoverable' do
+ before do
+ stub_request(:get, 'https://host/oembed.html').to_return(
+ status: 200,
+ headers: { 'Content-Type': 'text/html' },
+ body: request_fixture('oembed_undiscoverable.html')
+ )
+ end
+
+ it 'raises OEmbed::NotFound' do
+ expect { ProviderDiscovery.discover_provider('https://host/oembed.html') }.to raise_error OEmbed::NotFound
+ end
+ end
+ end
+
+ context 'when status code is not 200' do
+ before do
+ stub_request(:get, 'https://host/oembed.html').to_return(
+ status: 400,
+ headers: { 'Content-Type': 'text/html' },
+ body: request_fixture('oembed_xml.html')
+ )
+ end
+
+ it 'raises OEmbed::NotFound' do
+ expect { ProviderDiscovery.discover_provider('https://host/oembed.html') }.to raise_error OEmbed::NotFound
+ end
+ end
+
+ context 'when MIME type is not text/html' do
+ before do
+ stub_request(:get, 'https://host/oembed.html').to_return(
+ status: 200,
+ body: request_fixture('oembed_xml.html')
+ )
+ end
+
+ it 'raises OEmbed::NotFound' do
+ expect { ProviderDiscovery.discover_provider('https://host/oembed.html') }.to raise_error OEmbed::NotFound
+ end
+ end
+ end
+end