From 85baeddac483d575cc6488f984a4355ddee4e8be Mon Sep 17 00:00:00 2001
From: Matthieu Jacquot <matthieu.jacquot@schibsted.com>
Date: Sun, 5 Aug 2018 22:38:11 +0200
Subject: [PATCH] test article filters

---
 domain/article.go      |  1 +
 domain/article_test.go | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/domain/article.go b/domain/article.go
index f5d4e46..368da67 100644
--- a/domain/article.go
+++ b/domain/article.go
@@ -87,6 +87,7 @@ func (article *Article) UpdateComments(comment Comment, add bool) {
 		}
 	}
 }
+
 func (article *Article) UpdateFavoritedBy(user User, add bool) {
 	if add {
 		article.FavoritedBy = append(article.FavoritedBy, user)
diff --git a/domain/article_test.go b/domain/article_test.go
index dbb06df..c3ef260 100644
--- a/domain/article_test.go
+++ b/domain/article_test.go
@@ -26,3 +26,29 @@ func TestArticleCollection_ApplyLimitAndOffset(t *testing.T) {
 		assert.Equal(t, domain.ArticleCollection{}, articles.ApplyLimitAndOffset(-1, 0))
 	})
 }
+
+func TestArticleHasAuthor(t *testing.T) {
+	filter := domain.ArticleHasAuthor("author")
+	assert.True(t, filter(domain.Article{Author: domain.User{Name: "author"}}))
+	assert.False(t, filter(domain.Article{Author: domain.User{Name: "otherAuthor"}}))
+}
+
+func TestArticleHasTag(t *testing.T) {
+	filter := domain.ArticleHasTag("tag")
+	assert.True(t, filter(domain.Article{TagList: []string{"tag"}}))
+	assert.False(t, filter(domain.Article{TagList: []string{"otherTag"}}))
+}
+
+func TestArticleIsFavoritedBy(t *testing.T) {
+	t.Run("with userName", func(t *testing.T) {
+		filter := domain.ArticleIsFavoritedBy("user")
+		assert.True(t, filter(domain.Article{FavoritedBy: []domain.User{{Name: "user"}}}))
+		assert.False(t, filter(domain.Article{FavoritedBy: []domain.User{{Name: "otherUser"}}}))
+		assert.False(t, filter(domain.Article{FavoritedBy: []domain.User{{Name: ""}}}))
+	})
+
+	t.Run("without username", func(t *testing.T) {
+		emptyFilter := domain.ArticleIsFavoritedBy("")
+		assert.False(t, emptyFilter(domain.Article{FavoritedBy: []domain.User{{Name: ""}}})) // always returns false
+	})
+}