Add test for config parsing

config_test.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+)
+
+func TestLoadConfig(t *testing.T) {
+	cases := map[string]Config{
+		"empty.yaml": {},
+		"all-providers.yaml": {
+			Feeds: []Feed{"example.com/feed.xml"},
+			Outputs: []Output{
+				{
+					Kind: "s3",
+					Config: map[string]string{
+						"endpoint":     "https://s3.example.com",
+						"region":       "test-region",
+						"accesskeyid":  "test-key",
+						"accesssecret": "test-secret",
+						"bucket":       "test-bucket",
+						"keyformat":    "{{ .PublishedParsed.UTC.Year }}/{{ .PublishedParsed.UTC.Month }}/{{ .PublishedParsed.UTC.Day }}",
+					},
+				},
+				{
+					Kind: "file",
+					Config: map[string]string{
+						"pathformat": "./data/{{ .PublishedParsed.UTC.Year }}/{{ .PublishedParsed.UTC.Month }}/{{ .PublishedParsed.UTC.Day }}",
+					},
+				},
+				{
+					Kind: "kafka",
+					Config: map[string]string{
+						"broker": "127.0.0.1:9092",
+						"topic":  "feeds",
+					},
+				},
+				{
+					Kind: "discord",
+					Config: map[string]string{
+						"url": "https://discord.example.com/webhook",
+					},
+				},
+			},
+			Redis: RedisConfig{
+				Host: "127.0.0.1:6379",
+			},
+		},
+	}
+	for file, expected := range cases {
+		t.Run(file, func(t *testing.T) {
+			t.Parallel()
+			filename := fmt.Sprintf("testdata/%s", file)
+			config := loadConfig(filename)
+			if !reflect.DeepEqual(config, expected) {
+				t.Errorf("Configs do not match:\n%s\n%s", config, expected)
+			}
+		})
+	}
+}

testdata/all-providers.yaml

@@ -0,0 +1,23 @@
+outputs:
+  - kind: s3
+    config:
+      endpoint: https://s3.example.com
+      region: test-region
+      accesskeyid: test-key
+      accesssecret: test-secret
+      bucket: test-bucket
+      keyformat: "{{ .PublishedParsed.UTC.Year }}/{{ .PublishedParsed.UTC.Month }}/{{ .PublishedParsed.UTC.Day }}"
+  - kind: file
+    config:
+      pathformat: "./data/{{ .PublishedParsed.UTC.Year }}/{{ .PublishedParsed.UTC.Month }}/{{ .PublishedParsed.UTC.Day }}"
+  - kind: kafka
+    config:
+      broker: "127.0.0.1:9092"
+      topic: feeds
+  - kind: discord
+    config:
+      url: "https://discord.example.com/webhook"
+redis:
+  host: 127.0.0.1:6379
+feeds:
+  - example.com/feed.xml