func main() {
file, err := os.Create("schema.pqt.go")
if err != nil {
log.Fatal(err)
}
defer file.Close()
// For simplicity it is going to be empty.
sch := schema("example")
fmt.Fprint(file, `
// Code generated by pqt.
// source: cmd/appg/main.go
// DO NOT EDIT!
`)
err = pqtgo.NewGenerator().
SetPostgresVersion(9.5).
SetAcronyms(acronyms).
SetVisibility(pqtgo.Private).
GenerateTo(sch, file)
if err != nil {
log.Fatal(err)
}
fmt.Fprint(file, "/// SQL ...\n")
fmt.Fprint(file, "const SQL = `\n")
if err := pqtsql.NewGenerator().GenerateTo(sch, file); err != nil {
log.Fatal(err)
}
fmt.Fprint(file, "`")
}
func TestGenerator_Generate(t *testing.T) {
success := []struct {
expected string
given *pqt.Table
}{
{
expected: `-- do not modify, generated by pqt
CREATE TEMPORARY TABLE schema.user (
created_at TIMESTAMPTZ,
password TEXT,
username TEXT NOT NULL
);
`,
given: func() *pqt.Table {
return pqt.NewTable("user", pqt.WithTemporary()).
SetSchema(pqt.NewSchema("schema")).
AddColumn(&pqt.Column{Name: "username", Type: pqt.TypeText(), NotNull: true}).
AddColumn(&pqt.Column{Name: "password", Type: pqt.TypeText()}).
AddColumn(&pqt.Column{Name: "created_at", Type: pqt.TypeTimestampTZ()})
}(),
},
{
expected: `-- do not modify, generated by pqt
CREATE TABLE IF NOT EXISTS table_name (
created_at TIMESTAMPTZ DEFAULT NOW() NOT NULL,
created_by INTEGER NOT NULL,
enabled BOOL,
end_at TIMESTAMPTZ NOT NULL,
id SERIAL,
name TEXT,
price DECIMAL(10,1),
rel_id INTEGER,
slug TEXT NOT NULL,
start_at TIMESTAMPTZ NOT NULL,
updated_at TIMESTAMPTZ,
updated_by INTEGER,
CONSTRAINT "public.table_name_id_pkey" PRIMARY KEY (id),
CONSTRAINT "public.table_name_name_key" UNIQUE (name),
CONSTRAINT "public.table_name_slug_key" UNIQUE (slug),
CONSTRAINT "public.table_name_rel_id_fkey" FOREIGN KEY (rel_id) REFERENCES related_table (id),
CONSTRAINT "public.table_name_start_at_end_at_check" CHECK ((start_at IS NULL AND end_at IS NULL) OR start_at < end_at)
);
`,
given: func() *pqt.Table {
id := pqt.Column{Name: "id", Type: pqt.TypeSerial()}
startAt := &pqt.Column{Name: "start_at", Type: pqt.TypeTimestampTZ(), NotNull: true}
endAt := &pqt.Column{Name: "end_at", Type: pqt.TypeTimestampTZ(), NotNull: true}
_ = pqt.NewTable("related_table").
AddColumn(&id)
return pqt.NewTable("table_name", pqt.WithTableIfNotExists()).
AddColumn(&pqt.Column{Name: "id", Type: pqt.TypeSerial(), PrimaryKey: true}).
AddColumn(&pqt.Column{Name: "rel_id", Type: pqt.TypeInteger(), Reference: &id}).
AddColumn(&pqt.Column{Name: "name", Type: pqt.TypeText(), Unique: true}).
AddColumn(&pqt.Column{Name: "enabled", Type: pqt.TypeBool()}).
AddColumn(&pqt.Column{Name: "price", Type: pqt.TypeDecimal(10, 1)}).
AddColumn(startAt).
AddColumn(endAt).
AddColumn(pqt.NewColumn("created_at", pqt.TypeTimestampTZ(), pqt.WithNotNull(), pqt.WithDefault("NOW()"))).
AddColumn(&pqt.Column{Name: "created_by", Type: pqt.TypeInteger(), NotNull: true}).
AddColumn(&pqt.Column{Name: "updated_at", Type: pqt.TypeTimestampTZ()}).
AddColumn(&pqt.Column{Name: "updated_by", Type: pqt.TypeInteger()}).
AddColumn(&pqt.Column{Name: "slug", Type: pqt.TypeText(), NotNull: true, Unique: true}).
AddCheck("(start_at IS NULL AND end_at IS NULL) OR start_at < end_at", startAt, endAt)
}(),
},
}
for i, data := range success {
q, err := pqtsql.NewGenerator().Generate(&pqt.Schema{
Tables: []*pqt.Table{data.given},
})
if err != nil {
t.Errorf("unexpected error for schema #%d : %s", i, err.Error())
continue
}
if string(q) != data.expected {
t.Errorf("wrong query, expected:\n'%s'\nbut got:\n'%s'", data.expected, q)
}
}
}