Merge pull request #13 from abhinav/delete-collection

collection: Add support for deletion

collection.go

@@ -136,3 +136,27 @@ func (c *Client) GetUserCollections() (*[]Collection, error) {
 	}
 	return colls, nil
 }
+
+// DeleteCollection permanently deletes a collection and makes any posts on it
+// anonymous.
+//
+// See https://developers.write.as/docs/api/#delete-a-collection.
+func (c *Client) DeleteCollection(alias string) error {
+	endpoint := "/collections/" + alias
+	env, err := c.delete(endpoint, nil /* data */)
+	if err != nil {
+		return err
+	}
+
+	status := env.Code
+	switch status {
+	case http.StatusNoContent:
+		return nil
+	case http.StatusUnauthorized:
+		return fmt.Errorf("Not authenticated.")
+	case http.StatusBadRequest:
+		return fmt.Errorf("Bad request: %s", env.ErrorMessage)
+	default:
+		return fmt.Errorf("Problem deleting collection: %d. %s\n", status, env.ErrorMessage)
+	}
+}

collection_test.go

@@ -2,7 +2,9 @@ package writeas
 
 import (
 	"fmt"
+	"strings"
 	"testing"
+	"time"
 )
 
 func TestGetCollection(t *testing.T) {
@@ -51,6 +53,44 @@ func TestGetUserCollections(t *testing.T) {
 	}
 }
 
+func TestCreateAndDeleteCollection(t *testing.T) {
+	wac := NewDevClient()
+	_, err := wac.LogIn("demo", "demo")
+	if err != nil {
+		t.Fatalf("Unable to log in: %v", err)
+	}
+	defer wac.LogOut()
+
+	now := time.Now().Unix()
+	alias := fmt.Sprintf("test-collection-%v", now)
+	c, err := wac.CreateCollection(&CollectionParams{
+		Alias: alias,
+		Title: fmt.Sprintf("Test Collection %v", now),
+	})
+	if err != nil {
+		t.Fatalf("Unable to create collection %q: %v", alias, err)
+	}
+
+	if err := wac.DeleteCollection(c.Alias); err != nil {
+		t.Fatalf("Unable to delete collection %q: %v", alias, err)
+	}
+}
+
+func TestDeleteCollectionUnauthenticated(t *testing.T) {
+	wac := NewDevClient()
+
+	now := time.Now().Unix()
+	alias := fmt.Sprintf("test-collection-does-not-exist-%v", now)
+	err := wac.DeleteCollection(alias)
+	if err == nil {
+		t.Fatalf("Should not be able to delete collection %q unauthenticated.", alias)
+	}
+
+	if !strings.Contains(err.Error(), "Not authenticated") {
+		t.Fatalf("Error message should be more informative: %v", err)
+	}
+}
+
 func ExampleClient_GetCollection() {
 	c := NewClient()
 	coll, err := c.GetCollection("blog")