ntfy/server/message_cache_test.go

package server

import (
	"database/sql"
	"fmt"
	"net/netip"
	"path/filepath"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

var (
	exampleIP1234 = netip.MustParseAddr("1.2.3.4")
)

func TestSqliteCache_Messages(t *testing.T) {
	testCacheMessages(t, newSqliteTestCache(t))
}

func TestMemCache_Messages(t *testing.T) {
	testCacheMessages(t, newMemTestCache(t))
}

func testCacheMessages(t *testing.T, c *messageCache) {
	m1 := newDefaultMessage("mytopic", "my message")
	m1.Time = 1

	m2 := newDefaultMessage("mytopic", "my other message")
	m2.Time = 2

	require.Nil(t, c.AddMessage(m1))
	require.Nil(t, c.AddMessage(newDefaultMessage("example", "my example message")))
	require.Nil(t, c.AddMessage(m2))

	// Adding invalid
	require.Equal(t, errUnexpectedMessageType, c.AddMessage(newKeepaliveMessage("mytopic"))) // These should not be added!
	require.Equal(t, errUnexpectedMessageType, c.AddMessage(newOpenMessage("example")))      // These should not be added!

	// mytopic: count
	counts, err := c.MessageCounts()
	require.Nil(t, err)
	require.Equal(t, 2, counts["mytopic"])

	// mytopic: since all
	messages, _ := c.Messages("mytopic", sinceAllMessages, false)
	require.Equal(t, 2, len(messages))
	require.Equal(t, "my message", messages[0].Message)
	require.Equal(t, "mytopic", messages[0].Topic)
	require.Equal(t, messageEvent, messages[0].Event)
	require.Equal(t, "", messages[0].Title)
	require.Equal(t, 0, messages[0].Priority)
	require.Nil(t, messages[0].Tags)
	require.Equal(t, "my other message", messages[1].Message)

	// mytopic: since none
	messages, _ = c.Messages("mytopic", sinceNoMessages, false)
	require.Empty(t, messages)

	// mytopic: since m1 (by ID)
	messages, _ = c.Messages("mytopic", newSinceID(m1.ID), false)
	require.Equal(t, 1, len(messages))
	require.Equal(t, m2.ID, messages[0].ID)
	require.Equal(t, "my other message", messages[0].Message)
	require.Equal(t, "mytopic", messages[0].Topic)

	// mytopic: since 2
	messages, _ = c.Messages("mytopic", newSinceTime(2), false)
	require.Equal(t, 1, len(messages))
	require.Equal(t, "my other message", messages[0].Message)

	// example: count
	counts, err = c.MessageCounts()
	require.Nil(t, err)
	require.Equal(t, 1, counts["example"])

	// example: since all
	messages, _ = c.Messages("example", sinceAllMessages, false)
	require.Equal(t, "my example message", messages[0].Message)

	// non-existing: count
	counts, err = c.MessageCounts()
	require.Nil(t, err)
	require.Equal(t, 0, counts["doesnotexist"])

	// non-existing: since all
	messages, _ = c.Messages("doesnotexist", sinceAllMessages, false)
	require.Empty(t, messages)
}

func TestSqliteCache_MessagesScheduled(t *testing.T) {
	testCacheMessagesScheduled(t, newSqliteTestCache(t))
}

func TestMemCache_MessagesScheduled(t *testing.T) {
	testCacheMessagesScheduled(t, newMemTestCache(t))
}

func testCacheMessagesScheduled(t *testing.T, c *messageCache) {
	m1 := newDefaultMessage("mytopic", "message 1")
	m2 := newDefaultMessage("mytopic", "message 2")
	m2.Time = time.Now().Add(time.Hour).Unix()
	m3 := newDefaultMessage("mytopic", "message 3")
	m3.Time = time.Now().Add(time.Minute).Unix() // earlier than m2!
	m4 := newDefaultMessage("mytopic2", "message 4")
	m4.Time = time.Now().Add(time.Minute).Unix()
	require.Nil(t, c.AddMessage(m1))
	require.Nil(t, c.AddMessage(m2))
	require.Nil(t, c.AddMessage(m3))

	messages, _ := c.Messages("mytopic", sinceAllMessages, false) // exclude scheduled
	require.Equal(t, 1, len(messages))
	require.Equal(t, "message 1", messages[0].Message)

	messages, _ = c.Messages("mytopic", sinceAllMessages, true) // include scheduled
	require.Equal(t, 3, len(messages))
	require.Equal(t, "message 1", messages[0].Message)
	require.Equal(t, "message 3", messages[1].Message) // Order!
	require.Equal(t, "message 2", messages[2].Message)

	messages, _ = c.MessagesDue()
	require.Empty(t, messages)
}

func TestSqliteCache_Topics(t *testing.T) {
	testCacheTopics(t, newSqliteTestCache(t))
}

func TestMemCache_Topics(t *testing.T) {
	testCacheTopics(t, newMemTestCache(t))
}

func testCacheTopics(t *testing.T, c *messageCache) {
	require.Nil(t, c.AddMessage(newDefaultMessage("topic1", "my example message")))
	require.Nil(t, c.AddMessage(newDefaultMessage("topic2", "message 1")))
	require.Nil(t, c.AddMessage(newDefaultMessage("topic2", "message 2")))
	require.Nil(t, c.AddMessage(newDefaultMessage("topic2", "message 3")))

	topics, err := c.Topics()
	if err != nil {
		t.Fatal(err)
	}
	require.Equal(t, 2, len(topics))
	require.Equal(t, "topic1", topics["topic1"].ID)
	require.Equal(t, "topic2", topics["topic2"].ID)
}

func TestSqliteCache_MessagesTagsPrioAndTitle(t *testing.T) {
	testCacheMessagesTagsPrioAndTitle(t, newSqliteTestCache(t))
}

func TestMemCache_MessagesTagsPrioAndTitle(t *testing.T) {
	testCacheMessagesTagsPrioAndTitle(t, newMemTestCache(t))
}

func testCacheMessagesTagsPrioAndTitle(t *testing.T, c *messageCache) {
	m := newDefaultMessage("mytopic", "some message")
	m.Tags = []string{"tag1", "tag2"}
	m.Priority = 5
	m.Title = "some title"
	require.Nil(t, c.AddMessage(m))

	messages, _ := c.Messages("mytopic", sinceAllMessages, false)
	require.Equal(t, []string{"tag1", "tag2"}, messages[0].Tags)
	require.Equal(t, 5, messages[0].Priority)
	require.Equal(t, "some title", messages[0].Title)
}

func TestSqliteCache_MessagesSinceID(t *testing.T) {
	testCacheMessagesSinceID(t, newSqliteTestCache(t))
}

func TestMemCache_MessagesSinceID(t *testing.T) {
	testCacheMessagesSinceID(t, newMemTestCache(t))
}

func testCacheMessagesSinceID(t *testing.T, c *messageCache) {
	m1 := newDefaultMessage("mytopic", "message 1")
	m1.Time = 100
	m2 := newDefaultMessage("mytopic", "message 2")
	m2.Time = 200
	m3 := newDefaultMessage("mytopic", "message 3")
	m3.Time = time.Now().Add(time.Hour).Unix() // Scheduled, in the future, later than m7 and m5
	m4 := newDefaultMessage("mytopic", "message 4")
	m4.Time = 400
	m5 := newDefaultMessage("mytopic", "message 5")
	m5.Time = time.Now().Add(time.Minute).Unix() // Scheduled, in the future, later than m7
	m6 := newDefaultMessage("mytopic", "message 6")
	m6.Time = 600
	m7 := newDefaultMessage("mytopic", "message 7")
	m7.Time = 700

	require.Nil(t, c.AddMessage(m1))
	require.Nil(t, c.AddMessage(m2))
	require.Nil(t, c.AddMessage(m3))
	require.Nil(t, c.AddMessage(m4))
	require.Nil(t, c.AddMessage(m5))
	require.Nil(t, c.AddMessage(m6))
	require.Nil(t, c.AddMessage(m7))

	// Case 1: Since ID exists, exclude scheduled
	messages, _ := c.Messages("mytopic", newSinceID(m2.ID), false)
	require.Equal(t, 3, len(messages))
	require.Equal(t, "message 4", messages[0].Message)
	require.Equal(t, "message 6", messages[1].Message) // Not scheduled m3/m5!
	require.Equal(t, "message 7", messages[2].Message)

	// Case 2: Since ID exists, include scheduled
	messages, _ = c.Messages("mytopic", newSinceID(m2.ID), true)
	require.Equal(t, 5, len(messages))
	require.Equal(t, "message 4", messages[0].Message)
	require.Equal(t, "message 6", messages[1].Message)
	require.Equal(t, "message 7", messages[2].Message)
	require.Equal(t, "message 5", messages[3].Message) // Order!
	require.Equal(t, "message 3", messages[4].Message) // Order!

	// Case 3: Since ID does not exist (-> Return all messages), include scheduled
	messages, _ = c.Messages("mytopic", newSinceID("doesntexist"), true)
	require.Equal(t, 7, len(messages))
	require.Equal(t, "message 1", messages[0].Message)
	require.Equal(t, "message 2", messages[1].Message)
	require.Equal(t, "message 4", messages[2].Message)
	require.Equal(t, "message 6", messages[3].Message)
	require.Equal(t, "message 7", messages[4].Message)
	require.Equal(t, "message 5", messages[5].Message) // Order!
	require.Equal(t, "message 3", messages[6].Message) // Order!

	// Case 4: Since ID exists and is last message (-> Return no messages), exclude scheduled
	messages, _ = c.Messages("mytopic", newSinceID(m7.ID), false)
	require.Equal(t, 0, len(messages))

	// Case 5: Since ID exists and is last message (-> Return no messages), include scheduled
	messages, _ = c.Messages("mytopic", newSinceID(m7.ID), true)
	require.Equal(t, 2, len(messages))
	require.Equal(t, "message 5", messages[0].Message)
	require.Equal(t, "message 3", messages[1].Message)
}

func TestSqliteCache_Prune(t *testing.T) {
	testCachePrune(t, newSqliteTestCache(t))
}

func TestMemCache_Prune(t *testing.T) {
	testCachePrune(t, newMemTestCache(t))
}

func testCachePrune(t *testing.T, c *messageCache) {
	now := time.Now().Unix()

	m1 := newDefaultMessage("mytopic", "my message")
	m1.Time = now - 10
	m1.Expires = now - 5

	m2 := newDefaultMessage("mytopic", "my other message")
	m2.Time = now - 5
	m2.Expires = now + 5 // In the future

	m3 := newDefaultMessage("another_topic", "and another one")
	m3.Time = now - 12
	m3.Expires = now - 2

	require.Nil(t, c.AddMessage(m1))
	require.Nil(t, c.AddMessage(m2))
	require.Nil(t, c.AddMessage(m3))

	counts, err := c.MessageCounts()
	require.Nil(t, err)
	require.Equal(t, 2, counts["mytopic"])
	require.Equal(t, 1, counts["another_topic"])

	expiredMessageIDs, err := c.MessagesExpired()
	require.Nil(t, err)
	require.Nil(t, c.DeleteMessages(expiredMessageIDs...))

	counts, err = c.MessageCounts()
	require.Nil(t, err)
	require.Equal(t, 1, counts["mytopic"])
	require.Equal(t, 0, counts["another_topic"])

	messages, err := c.Messages("mytopic", sinceAllMessages, false)
	require.Nil(t, err)
	require.Equal(t, 1, len(messages))
	require.Equal(t, "my other message", messages[0].Message)
}

func TestSqliteCache_Attachments(t *testing.T) {
	testCacheAttachments(t, newSqliteTestCache(t))
}

func TestMemCache_Attachments(t *testing.T) {
	testCacheAttachments(t, newMemTestCache(t))
}

func testCacheAttachments(t *testing.T, c *messageCache) {
	expires1 := time.Now().Add(-4 * time.Hour).Unix()
	m := newDefaultMessage("mytopic", "flower for you")
	m.ID = "m1"
	m.Sender = exampleIP1234
	m.Attachment = &attachment{
		Name:    "flower.jpg",
		Type:    "image/jpeg",
		Size:    5000,
		Expires: expires1,
		URL:     "https://ntfy.sh/file/AbDeFgJhal.jpg",
	}
	require.Nil(t, c.AddMessage(m))

	expires2 := time.Now().Add(2 * time.Hour).Unix() // Future
	m = newDefaultMessage("mytopic", "sending you a car")
	m.ID = "m2"
	m.Sender = exampleIP1234
	m.Attachment = &attachment{
		Name:    "car.jpg",
		Type:    "image/jpeg",
		Size:    10000,
		Expires: expires2,
		URL:     "https://ntfy.sh/file/aCaRURL.jpg",
	}
	require.Nil(t, c.AddMessage(m))

	expires3 := time.Now().Add(1 * time.Hour).Unix() // Future
	m = newDefaultMessage("another-topic", "sending you another car")
	m.ID = "m3"
	m.Sender = exampleIP1234
	m.Attachment = &attachment{
		Name:    "another-car.jpg",
		Type:    "image/jpeg",
		Size:    20000,
		Expires: expires3,
		URL:     "https://ntfy.sh/file/zakaDHFW.jpg",
	}
	require.Nil(t, c.AddMessage(m))

	messages, err := c.Messages("mytopic", sinceAllMessages, false)
	require.Nil(t, err)
	require.Equal(t, 2, len(messages))

	require.Equal(t, "flower for you", messages[0].Message)
	require.Equal(t, "flower.jpg", messages[0].Attachment.Name)
	require.Equal(t, "image/jpeg", messages[0].Attachment.Type)
	require.Equal(t, int64(5000), messages[0].Attachment.Size)
	require.Equal(t, expires1, messages[0].Attachment.Expires)
	require.Equal(t, "https://ntfy.sh/file/AbDeFgJhal.jpg", messages[0].Attachment.URL)
	require.Equal(t, "1.2.3.4", messages[0].Sender.String())

	require.Equal(t, "sending you a car", messages[1].Message)
	require.Equal(t, "car.jpg", messages[1].Attachment.Name)
	require.Equal(t, "image/jpeg", messages[1].Attachment.Type)
	require.Equal(t, int64(10000), messages[1].Attachment.Size)
	require.Equal(t, expires2, messages[1].Attachment.Expires)
	require.Equal(t, "https://ntfy.sh/file/aCaRURL.jpg", messages[1].Attachment.URL)
	require.Equal(t, "1.2.3.4", messages[1].Sender.String())

	size, err := c.AttachmentBytesUsedBySender("1.2.3.4")
	require.Nil(t, err)
	require.Equal(t, int64(30000), size)

	size, err = c.AttachmentBytesUsedBySender("5.6.7.8")
	require.Nil(t, err)
	require.Equal(t, int64(0), size)
}

func TestSqliteCache_Migration_From0(t *testing.T) {
	filename := newSqliteTestCacheFile(t)
	db, err := sql.Open("sqlite3", filename)
	require.Nil(t, err)

	// Create "version 0" schema
	_, err = db.Exec(`
		BEGIN;
		CREATE TABLE IF NOT EXISTS messages (
			id VARCHAR(20) PRIMARY KEY,
			time INT NOT NULL,
			topic VARCHAR(64) NOT NULL,
			message VARCHAR(1024) NOT NULL
		);
		CREATE INDEX IF NOT EXISTS idx_topic ON messages (topic);
		COMMIT;
	`)
	require.Nil(t, err)

	// Insert a bunch of messages
	for i := 0; i < 10; i++ {
		_, err = db.Exec(`INSERT INTO messages (id, time, topic, message) VALUES (?, ?, ?, ?)`,
			fmt.Sprintf("abcd%d", i), time.Now().Unix(), "mytopic", fmt.Sprintf("some message %d", i))
		require.Nil(t, err)
	}
	require.Nil(t, db.Close())

	// Create cache to trigger migration
	c := newSqliteTestCacheFromFile(t, filename, "")
	checkSchemaVersion(t, c.db)

	messages, err := c.Messages("mytopic", sinceAllMessages, false)
	require.Nil(t, err)
	require.Equal(t, 10, len(messages))
	require.Equal(t, "some message 5", messages[5].Message)
	require.Equal(t, "", messages[5].Title)
	require.Nil(t, messages[5].Tags)
	require.Equal(t, 0, messages[5].Priority)
}

func TestSqliteCache_Migration_From1(t *testing.T) {
	filename := newSqliteTestCacheFile(t)
	db, err := sql.Open("sqlite3", filename)
	require.Nil(t, err)

	// Create "version 1" schema
	_, err = db.Exec(`
		CREATE TABLE IF NOT EXISTS messages (
			id VARCHAR(20) PRIMARY KEY,
			time INT NOT NULL,
			topic VARCHAR(64) NOT NULL,
			message VARCHAR(512) NOT NULL,
			title VARCHAR(256) NOT NULL,
			priority INT NOT NULL,
			tags VARCHAR(256) NOT NULL
		);
		CREATE INDEX IF NOT EXISTS idx_topic ON messages (topic);
		CREATE TABLE IF NOT EXISTS schemaVersion (
			id INT PRIMARY KEY,
			version INT NOT NULL
		);		
		INSERT INTO schemaVersion (id, version) VALUES (1, 1);
	`)
	require.Nil(t, err)

	// Insert a bunch of messages
	for i := 0; i < 10; i++ {
		_, err = db.Exec(`INSERT INTO messages (id, time, topic, message, title, priority, tags) VALUES (?, ?, ?, ?, ?, ?, ?)`,
			fmt.Sprintf("abcd%d", i), time.Now().Unix(), "mytopic", fmt.Sprintf("some message %d", i), "", 0, "")
		require.Nil(t, err)
	}
	require.Nil(t, db.Close())

	// Create cache to trigger migration
	c := newSqliteTestCacheFromFile(t, filename, "")
	checkSchemaVersion(t, c.db)

	// Add delayed message
	delayedMessage := newDefaultMessage("mytopic", "some delayed message")
	delayedMessage.Time = time.Now().Add(time.Minute).Unix()
	require.Nil(t, c.AddMessage(delayedMessage))

	// 10, not 11!
	messages, err := c.Messages("mytopic", sinceAllMessages, false)
	require.Nil(t, err)
	require.Equal(t, 10, len(messages))

	// 11!
	messages, err = c.Messages("mytopic", sinceAllMessages, true)
	require.Nil(t, err)
	require.Equal(t, 11, len(messages))
}

func TestSqliteCache_Migration_From9(t *testing.T) {
	// This primarily tests the awkward migration that introduces the "expires" column.
	// The migration logic has to update the column, using the existing "cache-duration" value.

	filename := newSqliteTestCacheFile(t)
	db, err := sql.Open("sqlite3", filename)
	require.Nil(t, err)

	// Create "version 8" schema
	_, err = db.Exec(`
		BEGIN;
		CREATE TABLE IF NOT EXISTS messages (
			id INTEGER PRIMARY KEY AUTOINCREMENT,
			mid TEXT NOT NULL,
			time INT NOT NULL,
			topic TEXT NOT NULL,
			message TEXT NOT NULL,
			title TEXT NOT NULL,
			priority INT NOT NULL,
			tags TEXT NOT NULL,
			click TEXT NOT NULL,
			icon TEXT NOT NULL,			
			actions TEXT NOT NULL,
			attachment_name TEXT NOT NULL,
			attachment_type TEXT NOT NULL,
			attachment_size INT NOT NULL,
			attachment_expires INT NOT NULL,
			attachment_url TEXT NOT NULL,
			sender TEXT NOT NULL,
			encoding TEXT NOT NULL,
			published INT NOT NULL
		);
		CREATE INDEX IF NOT EXISTS idx_mid ON messages (mid);
		CREATE INDEX IF NOT EXISTS idx_time ON messages (time);
		CREATE INDEX IF NOT EXISTS idx_topic ON messages (topic);
		CREATE TABLE IF NOT EXISTS schemaVersion (
			id INT PRIMARY KEY,
			version INT NOT NULL
		);		
		INSERT INTO schemaVersion (id, version) VALUES (1, 9);
		COMMIT;
	`)
	require.Nil(t, err)

	// Insert a bunch of messages
	insertQuery := `
		INSERT INTO messages (mid, time, topic, message, title, priority, tags, click, icon, actions, attachment_name, attachment_type, attachment_size, attachment_expires, attachment_url, sender, encoding, published) 
		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
	`
	for i := 0; i < 10; i++ {
		_, err = db.Exec(
			insertQuery,
			fmt.Sprintf("abcd%d", i),
			time.Now().Unix(),
			"mytopic",
			fmt.Sprintf("some message %d", i),
			"",        // title
			0,         // priority
			"",        // tags
			"",        // click
			"",        // icon
			"",        // actions
			"",        // attachment_name
			"",        // attachment_type
			0,         // attachment_size
			0,         // attachment_type
			"",        // attachment_url
			"9.9.9.9", // sender
			"",        // encoding
			1,         // published
		)
		require.Nil(t, err)
	}

	// Create cache to trigger migration
	cacheDuration := 17 * time.Hour
	c, err := newSqliteCache(filename, "", cacheDuration, 0, 0, false)
	require.Nil(t, err)
	checkSchemaVersion(t, c.db)

	// Check version
	rows, err := db.Query(`SELECT version FROM main.schemaVersion WHERE id = 1`)
	require.Nil(t, err)
	require.True(t, rows.Next())
	var version int
	require.Nil(t, rows.Scan(&version))
	require.Equal(t, currentSchemaVersion, version)

	messages, err := c.Messages("mytopic", sinceAllMessages, false)
	require.Nil(t, err)
	require.Equal(t, 10, len(messages))
	for _, m := range messages {
		require.True(t, m.Expires > time.Now().Add(cacheDuration-5*time.Second).Unix())
		require.True(t, m.Expires < time.Now().Add(cacheDuration+5*time.Second).Unix())
	}
}

func TestSqliteCache_StartupQueries_WAL(t *testing.T) {
	filename := newSqliteTestCacheFile(t)
	startupQueries := `pragma journal_mode = WAL; 
pragma synchronous = normal; 
pragma temp_store = memory;`
	db, err := newSqliteCache(filename, startupQueries, time.Hour, 0, 0, false)
	require.Nil(t, err)
	require.Nil(t, db.AddMessage(newDefaultMessage("mytopic", "some message")))
	require.FileExists(t, filename)
	require.FileExists(t, filename+"-wal")
	require.FileExists(t, filename+"-shm")
}

func TestSqliteCache_StartupQueries_None(t *testing.T) {
	filename := newSqliteTestCacheFile(t)
	startupQueries := ""
	db, err := newSqliteCache(filename, startupQueries, time.Hour, 0, 0, false)
	require.Nil(t, err)
	require.Nil(t, db.AddMessage(newDefaultMessage("mytopic", "some message")))
	require.FileExists(t, filename)
	require.NoFileExists(t, filename+"-wal")
	require.NoFileExists(t, filename+"-shm")
}

func TestSqliteCache_StartupQueries_Fail(t *testing.T) {
	filename := newSqliteTestCacheFile(t)
	startupQueries := `xx error`
	_, err := newSqliteCache(filename, startupQueries, time.Hour, 0, 0, false)
	require.Error(t, err)
}

func TestSqliteCache_Sender(t *testing.T) {
	testSender(t, newSqliteTestCache(t))
}

func TestMemCache_Sender(t *testing.T) {
	testSender(t, newMemTestCache(t))
}

func testSender(t *testing.T, c *messageCache) {
	m1 := newDefaultMessage("mytopic", "mymessage")
	m1.Sender = netip.MustParseAddr("1.2.3.4")
	require.Nil(t, c.AddMessage(m1))

	m2 := newDefaultMessage("mytopic", "mymessage without sender")
	require.Nil(t, c.AddMessage(m2))

	messages, err := c.Messages("mytopic", sinceAllMessages, false)
	require.Nil(t, err)
	require.Equal(t, 2, len(messages))
	require.Equal(t, messages[0].Sender, netip.MustParseAddr("1.2.3.4"))
	require.Equal(t, messages[1].Sender, netip.Addr{})
}

func checkSchemaVersion(t *testing.T, db *sql.DB) {
	rows, err := db.Query(`SELECT version FROM schemaVersion`)
	require.Nil(t, err)
	require.True(t, rows.Next())

	var schemaVersion int
	require.Nil(t, rows.Scan(&schemaVersion))
	require.Equal(t, currentSchemaVersion, schemaVersion)
	require.Nil(t, rows.Close())
}

func TestMemCache_NopCache(t *testing.T) {
	c, _ := newNopCache()
	assert.Nil(t, c.AddMessage(newDefaultMessage("mytopic", "my message")))

	messages, err := c.Messages("mytopic", sinceAllMessages, false)
	assert.Nil(t, err)
	assert.Empty(t, messages)

	topics, err := c.Topics()
	assert.Nil(t, err)
	assert.Empty(t, topics)
}

func newSqliteTestCache(t *testing.T) *messageCache {
	c, err := newSqliteCache(newSqliteTestCacheFile(t), "", time.Hour, 0, 0, false)
	if err != nil {
		t.Fatal(err)
	}
	return c
}

func newSqliteTestCacheFile(t *testing.T) string {
	return filepath.Join(t.TempDir(), "cache.db")
}

func newSqliteTestCacheFromFile(t *testing.T, filename, startupQueries string) *messageCache {
	c, err := newSqliteCache(filename, startupQueries, time.Hour, 0, 0, false)
	if err != nil {
		t.Fatal(err)
	}
	return c
}

func newMemTestCache(t *testing.T) *messageCache {
	c, err := newMemCache()
	if err != nil {
		t.Fatal(err)
	}
	return c
}