Carlos Florêncio
122 lines
3.1 KiB
Go
122 lines
3.1 KiB
Go
package persistence
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import (
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"testing"
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"github.com/jmoiron/sqlx"
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_ "github.com/mattn/go-sqlite3"
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)
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func memSQLiteDB(t *testing.T) *sqlx.DB {
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t.Helper()
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db, err := sqlx.Open("sqlite3", ":memory:")
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if err != nil {
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t.Fatalf("open sqlite: %v", err)
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}
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t.Cleanup(func() { _ = db.Close() })
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return db
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}
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// TestReadKey_EmptyOnFreshDB verifies that readKey returns "" when the key
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// is absent.
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func TestReadKey_EmptyOnFreshDB(t *testing.T) {
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db := memSQLiteDB(t)
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if err := ensureMetaTable(db); err != nil {
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t.Fatalf("ensureMetaTable: %v", err)
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}
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val, err := readKey(db, "kandev_version")
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if err != nil {
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t.Fatalf("readKey: %v", err)
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}
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if val != "" {
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t.Errorf("expected empty value for missing key, got %q", val)
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}
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}
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// TestWriteAndReadKey verifies the write-then-read roundtrip.
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func TestWriteAndReadKey_Roundtrip(t *testing.T) {
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db := memSQLiteDB(t)
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if err := ensureMetaTable(db); err != nil {
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t.Fatalf("ensureMetaTable: %v", err)
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}
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if err := writeKey(db, "kandev_version", "v1.2.3"); err != nil {
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t.Fatalf("writeKey: %v", err)
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}
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val, err := readKey(db, "kandev_version")
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if err != nil {
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t.Fatalf("readKey: %v", err)
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}
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if val != "v1.2.3" {
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t.Errorf("got %q, want %q", val, "v1.2.3")
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}
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// Overwrite should work (upsert).
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if err := writeKey(db, "kandev_version", "v2.0.0"); err != nil {
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t.Fatalf("writeKey overwrite: %v", err)
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}
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val2, err := readKey(db, "kandev_version")
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if err != nil {
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t.Fatalf("readKey after overwrite: %v", err)
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}
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if val2 != "v2.0.0" {
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t.Errorf("got %q after overwrite, want %q", val2, "v2.0.0")
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}
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}
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// TestHasUserTables_BeforeAndAfter verifies that hasUserTables returns
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// false on an empty meta-only DB and true once a user table is created.
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func TestHasUserTables_BeforeAndAfter(t *testing.T) {
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db := memSQLiteDB(t)
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if err := ensureMetaTable(db); err != nil {
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t.Fatalf("ensureMetaTable: %v", err)
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}
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has, err := hasUserTables(db)
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if err != nil {
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t.Fatalf("hasUserTables: %v", err)
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}
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if has {
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t.Error("expected no user tables on fresh DB, got true")
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}
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if _, err := db.Exec(`CREATE TABLE my_table (id TEXT PRIMARY KEY)`); err != nil {
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t.Fatalf("create table: %v", err)
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}
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has2, err := hasUserTables(db)
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if err != nil {
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t.Fatalf("hasUserTables after create: %v", err)
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}
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if !has2 {
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t.Error("expected hasUserTables=true after creating a user table")
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}
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}
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// TestShouldBackup verifies the backup decision logic.
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func TestShouldBackup(t *testing.T) {
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tests := []struct {
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name string
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stored string
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current string
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userTables bool
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want bool
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}{
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{"fresh install no tables", "", "v1.0.0", false, false},
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{"pre-meta upgrade", "", "v1.0.0", true, true},
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{"version change", "v0.9.0", "v1.0.0", true, true},
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{"same release", "v1.0.0", "v1.0.0", true, false},
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{"same release no tables", "v1.0.0", "v1.0.0", false, false},
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}
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for _, tc := range tests {
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t.Run(tc.name, func(t *testing.T) {
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got := shouldBackup(tc.stored, tc.current, tc.userTables)
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if got != tc.want {
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t.Errorf("shouldBackup(%q, %q, %v) = %v, want %v",
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tc.stored, tc.current, tc.userTables, got, tc.want)
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}
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})
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}
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}
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