fix: enable env vars in setup steps (and deprecate admin subcommand) (#3871)

* fix: enable env vars in setup steps (and deprecate admin subcommand)

* fix tests and error text

cmd/initialise/init_test.go

@@ -0,0 +1,82 @@
+package initialise
+
+import (
+	"database/sql"
+	"database/sql/driver"
+	"regexp"
+	"testing"
+
+	"github.com/DATA-DOG/go-sqlmock"
+)
+
+type db struct {
+	mock sqlmock.Sqlmock
+	db   *sql.DB
+}
+
+func prepareDB(t *testing.T, expectations ...expectation) db {
+	t.Helper()
+	client, mock, err := sqlmock.New()
+	if err != nil {
+		t.Fatalf("unable to create sql mock: %v", err)
+	}
+	for _, expectation := range expectations {
+		expectation(mock)
+	}
+	return db{
+		mock: mock,
+		db:   client,
+	}
+}
+
+type expectation func(m sqlmock.Sqlmock)
+
+func expectExists(query string, value bool, args ...driver.Value) expectation {
+	return func(m sqlmock.Sqlmock) {
+		m.ExpectQuery(regexp.QuoteMeta(query)).WithArgs(args...).WillReturnRows(sqlmock.NewRows([]string{"exists"}).AddRow(value))
+	}
+}
+
+func expectQueryErr(query string, err error, args ...driver.Value) expectation {
+	return func(m sqlmock.Sqlmock) {
+		m.ExpectQuery(regexp.QuoteMeta(query)).WithArgs(args...).WillReturnError(err)
+	}
+}
+
+func expectExec(stmt string, err error, args ...driver.Value) expectation {
+	return func(m sqlmock.Sqlmock) {
+		query := m.ExpectExec(regexp.QuoteMeta(stmt)).WithArgs(args...)
+		if err != nil {
+			query.WillReturnError(err)
+			return
+		}
+		query.WillReturnResult(sqlmock.NewResult(1, 1))
+	}
+}
+
+func expectBegin(err error) expectation {
+	return func(m sqlmock.Sqlmock) {
+		query := m.ExpectBegin()
+		if err != nil {
+			query.WillReturnError(err)
+		}
+	}
+}
+
+func expectCommit(err error) expectation {
+	return func(m sqlmock.Sqlmock) {
+		query := m.ExpectCommit()
+		if err != nil {
+			query.WillReturnError(err)
+		}
+	}
+}
+
+func expectRollback(err error) expectation {
+	return func(m sqlmock.Sqlmock) {
+		query := m.ExpectRollback()
+		if err != nil {
+			query.WillReturnError(err)
+		}
+	}
+}