chore: better tests

plugin/config_test.go

@@ -7,7 +7,35 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func TestConfig(t *testing.T) {
+func TestRequiredConfig(t *testing.T) {
+	var c Config
+
+	_, err := c.BoolGetter(context.TODO())
+	assert.Error(t, err)
+
+	_, err = c.IntSetter(context.TODO(), "foo")
+	assert.Error(t, err)
+
+	c = Config{
+		Source: "http",
+		Other:  map[string]any{"uri": "http://localhost"},
+	}
+
+	g, err := c.BoolGetter(context.TODO())
+	assert.NoError(t, err)
+	assert.NotNil(t, g)
+
+	s, err := c.IntSetter(context.TODO(), "foo")
+	assert.NoError(t, err)
+	assert.NotNil(t, s)
+
+	c = Config{Source: "foo"}
+
+	_, err = c.BoolGetter(context.TODO())
+	assert.Error(t, err)
+}
+
+func TestOptionalConfig(t *testing.T) {
 	var c *Config
 
 	g, err := c.BoolGetter(context.TODO())