Re-structure packages

Overhaul of package structure and other cleanup.

config/config_test.go

@@ -0,0 +1,36 @@
+package config
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// TestLoadConfiguration tests loading the example config
+func TestLoadConfiguration(t *testing.T) {
+	exampleConfig := LoadConfiguration("../config-example.yaml")
+
+	expectedFeeds := []string{
+		"https://news.ycombinator.com/rss",
+		"https://www.reddit.com/r/golang/.rss",
+		"https://www.reddit.com/r/linux/.rss",
+		"https://www.zdnet.com/topic/security/rss.xml",
+		"https://aws.amazon.com/blogs/security/feed/",
+		"https://www.archlinux.org/feeds/news/",
+	}
+
+	assert.Equal(
+		t,
+		expectedFeeds,
+		exampleConfig.Feeds,
+		"Expected configuration does not match.",
+	)
+
+	// ExternalViewer should default to either 'xdg-open' on Linux,
+	// or 'open' on macOS
+	assert.Contains(
+		t,
+		[]string{"xdg-open", "open"},
+		exampleConfig.ExternalViewer,
+	)
+}