From 32190b70365e3110c47a8940a43be360e6cc2778 Mon Sep 17 00:00:00 2001
From: Drew Bednar <drew@runcible.io>
Date: Sun, 23 Feb 2025 10:37:12 -0500
Subject: [PATCH] Adding mock services

---
 cmd/ratchetd/testutils_test.go  |  2 --
 internal/model/mock/snippets.go | 35 +++++++++++++++++++++++++++++++++
 internal/model/mock/user.go     | 34 ++++++++++++++++++++++++++++++++
 internal/server/server.go       |  2 ++
 4 files changed, 71 insertions(+), 2 deletions(-)
 create mode 100644 internal/model/mock/snippets.go
 create mode 100644 internal/model/mock/user.go

diff --git a/cmd/ratchetd/testutils_test.go b/cmd/ratchetd/testutils_test.go
index fafee70..1c53e32 100644
--- a/cmd/ratchetd/testutils_test.go
+++ b/cmd/ratchetd/testutils_test.go
@@ -14,9 +14,7 @@ import (
 // Create a newTestApplication helper which returns an instance of our
 // application struct containing mocked dependencies.
 func newTestApplication(t *testing.T) *server.RatchetApp {
-
 	rs := server.NewRatchetApp(slog.New(slog.NewTextHandler(io.Discard, nil)), nil, nil, nil)
-
 	return rs
 }
 
diff --git a/internal/model/mock/snippets.go b/internal/model/mock/snippets.go
new file mode 100644
index 0000000..1c0fad0
--- /dev/null
+++ b/internal/model/mock/snippets.go
@@ -0,0 +1,35 @@
+package mock
+
+import (
+	"database/sql"
+	"time"
+
+	"git.runcible.io/learning/ratchet/internal/model"
+)
+
+var mockSnippet = model.Snippet{
+	ID:        1,
+	Title:     sql.NullString{String: "Hello golang mocking", Valid: true},
+	Content:   sql.NullString{String: "Hello golang mocking", Valid: true},
+	CreatedAt: time.Now(),
+	UpdatedAt: time.Now(),
+	ExpiresAt: time.Now(),
+}
+
+type SnippetService struct{}
+
+func (s *SnippetService) Insert(title, content string, expiresAt int) (int, error) {
+	return 2, nil
+}
+
+func (s *SnippetService) Get(id int) (model.Snippet, error) {
+	if id == mockSnippet.ID {
+		return mockSnippet, nil
+	} else {
+		return model.Snippet{}, model.ErrNoRecord
+	}
+}
+
+func (s *SnippetService) Lastest() ([]model.Snippet, error) {
+	return []model.Snippet{mockSnippet}, nil
+}
diff --git a/internal/model/mock/user.go b/internal/model/mock/user.go
new file mode 100644
index 0000000..53e1a46
--- /dev/null
+++ b/internal/model/mock/user.go
@@ -0,0 +1,34 @@
+package mock
+
+import "git.runcible.io/learning/ratchet/internal/model"
+
+var MockEmail = "drew@fake.com"
+var MockPassword = "thisisinsecure"
+
+type UserService struct{}
+
+func (u *UserService) Insert(name, email, password string) (int, error) {
+	switch email {
+	case "dupe@example.com":
+		return 0, model.ErrDuplicateEmail
+	default:
+		return 1, nil
+	}
+}
+
+func (u *UserService) Authenticate(email, password string) (int, error) {
+	if email == MockEmail && password == MockPassword {
+		return 1, nil
+	}
+
+	return 0, model.ErrInvalidCredentials
+}
+
+func (u *UserService) Exists(id int) (bool, error) {
+	switch id {
+	case 1:
+		return true, nil
+	default:
+		return false, nil
+	}
+}
diff --git a/internal/server/server.go b/internal/server/server.go
index bb47ca6..bf78ad8 100644
--- a/internal/server/server.go
+++ b/internal/server/server.go
@@ -23,6 +23,8 @@ type RatchetApp struct {
 	sessionManager *scs.SessionManager
 }
 
+// TODO this function presents some challenges because it both instantiates new data objects
+// and configures route / middleware setup
 func NewRatchetApp(logger *slog.Logger, tc *TemplateCache, db *sql.DB, sm *scs.SessionManager) *RatchetApp {
 	rs := new(RatchetApp)
 	rs.logger = logger