From 74fc87dcfaa8a65c14c0ef6fe88b6df02f2e90cb Mon Sep 17 00:00:00 2001
From: xengineering <me@xengineering.eu>
Date: Mon, 4 Mar 2024 20:39:17 +0100
Subject: model: Implement Stringer interface for Recipe
This allows to print a recipe with a fmt.Printf() call more easily:
fmt.Printf("%s\n", recipe)
This is also used for better error output in unit tests with t.Fatalf().
The Stringer interface is implemented with the JSON package because an
indented version of a recipe is a useful string representation.
---
model/recipe.go | 6 ++++++
model/recipe_test.go | 8 +++++---
2 files changed, 11 insertions(+), 3 deletions(-)
(limited to 'model')
diff --git a/model/recipe.go b/model/recipe.go
index ce16ee4..b9830e6 100644
--- a/model/recipe.go
+++ b/model/recipe.go
@@ -2,6 +2,7 @@ package model
import (
"database/sql"
+ "encoding/json"
"errors"
"fmt"
"time"
@@ -17,6 +18,11 @@ type Recipe struct {
LastChanged string `json:"last_changed"`
}
+func (r Recipe) String() string {
+ b, _ := json.MarshalIndent(r, "", " ")
+ return string(b)
+}
+
func (r *Recipe) Touch() {
now := time.Now().Unix()
r.LastChanged = fmt.Sprint(now)
diff --git a/model/recipe_test.go b/model/recipe_test.go
index 0057a3d..55041a6 100644
--- a/model/recipe_test.go
+++ b/model/recipe_test.go
@@ -30,7 +30,8 @@ func TestRecipeCrud(t *testing.T) {
}
if !reflect.DeepEqual(original, readback) {
- t.Fatalf("Recipes did not match after create / read cycle")
+ t.Fatalf("Recipes did not match after create / read cycle:\n"+
+ "Before: %s\nAfter: %s\n", original, readback)
}
update.Id = original.Id
@@ -46,8 +47,9 @@ func TestRecipeCrud(t *testing.T) {
t.Fatalf("Failed to read back updated recipe: %v\n", err)
}
- if !reflect.DeepEqual(updated, update) {
- t.Fatalf("Recipes did not match after update / read cycle")
+ if !reflect.DeepEqual(update, updated) {
+ t.Fatalf("Recipes did not match after update / read cycle:\n"+
+ "Update: %s\nUpdated: %s\n", update, updated)
}
if reflect.DeepEqual(updated, original) {
--
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