test: extend test coverage for server, config, and utils

config_test.go

@@ -24,3 +24,36 @@ func TestConfig(t *testing.T) {
 	assert.Equal(t, "https://localhost", cfg.FQDN)
 	assert.Equal(t, "0.0.0.0:8000", cfg.Bind)
 }
+
+func TestConfigDefaults(t *testing.T) {
+	tests := []struct {
+		name   string
+		config Config
+		expiry time.Duration
+		bind   string
+		fqdn   string
+	}{
+		{
+			name:   "short expiry",
+			config: Config{Expiry: 1 * time.Minute, Bind: ":8080", FQDN: "paste.example.com"},
+			expiry: 1 * time.Minute,
+			bind:   ":8080",
+			fqdn:   "paste.example.com",
+		},
+		{
+			name:   "long expiry",
+			config: Config{Expiry: 24 * time.Hour, Bind: "127.0.0.1:3000", FQDN: "localhost"},
+			expiry: 24 * time.Hour,
+			bind:   "127.0.0.1:3000",
+			fqdn:   "localhost",
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			assert.Equal(t, tc.expiry, tc.config.Expiry)
+			assert.Equal(t, tc.bind, tc.config.Bind)
+			assert.Equal(t, tc.fqdn, tc.config.FQDN)
+		})
+	}
+}