Create PostAndCommentService, holds common methods

Some functionality such as saving, voting, deleting, etc. is common to
both posts and comments, so this service will hold such methods.

Tweaked the separate post/comment services accordingly. Fixed tests.

Signed-off-by: Vartan Benohanian <vartanbeno@gmail.com>

post_test.go

@@ -53,3 +53,83 @@ func TestPostService_Unhide(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, http.StatusOK, res.StatusCode)
 }
+
+func TestPostService_MarkNSFW(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/api/marknsfw", func(w http.ResponseWriter, r *http.Request) {
+		assert.Equal(t, http.MethodPost, r.Method)
+
+		form := url.Values{}
+		form.Set("id", "t1_test")
+
+		err := r.ParseForm()
+		assert.NoError(t, err)
+		assert.Equal(t, form, r.PostForm)
+	})
+
+	res, err := client.Post.MarkNSFW(ctx, "t1_test")
+	assert.NoError(t, err)
+	assert.Equal(t, http.StatusOK, res.StatusCode)
+}
+
+func TestPostService_UnmarkNSFW(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/api/unmarknsfw", func(w http.ResponseWriter, r *http.Request) {
+		assert.Equal(t, http.MethodPost, r.Method)
+
+		form := url.Values{}
+		form.Set("id", "t1_test")
+
+		err := r.ParseForm()
+		assert.NoError(t, err)
+		assert.Equal(t, form, r.PostForm)
+	})
+
+	res, err := client.Post.UnmarkNSFW(ctx, "t1_test")
+	assert.NoError(t, err)
+	assert.Equal(t, http.StatusOK, res.StatusCode)
+}
+
+func TestPostService_Spoiler(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/api/spoiler", func(w http.ResponseWriter, r *http.Request) {
+		assert.Equal(t, http.MethodPost, r.Method)
+
+		form := url.Values{}
+		form.Set("id", "t1_test")
+
+		err := r.ParseForm()
+		assert.NoError(t, err)
+		assert.Equal(t, form, r.PostForm)
+	})
+
+	res, err := client.Post.Spoiler(ctx, "t1_test")
+	assert.NoError(t, err)
+	assert.Equal(t, http.StatusOK, res.StatusCode)
+}
+
+func TestPostService_Unspoiler(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/api/unspoiler", func(w http.ResponseWriter, r *http.Request) {
+		assert.Equal(t, http.MethodPost, r.Method)
+
+		form := url.Values{}
+		form.Set("id", "t1_test")
+
+		err := r.ParseForm()
+		assert.NoError(t, err)
+		assert.Equal(t, form, r.PostForm)
+	})
+
+	res, err := client.Post.Unspoiler(ctx, "t1_test")
+	assert.NoError(t, err)
+	assert.Equal(t, http.StatusOK, res.StatusCode)
+}