elvish/pkg/eval/compiler_test.go

package eval_test

import (
	"bytes"
	"strings"
	"testing"

	. "src.elv.sh/pkg/eval"
	"src.elv.sh/pkg/parse"
	"src.elv.sh/pkg/prog/progtest"
)

func TestDeprecatedBuiltin(t *testing.T) {
	// There is no builtin deprecated for 0.18.x yet. Uncomment this when there is one.
	//testCompileTimeDeprecation(t, "deprecated-builtin", `the "deprecated-builtin" command is deprecated`, 17)

	// Deprecations of other builtins are implemented in the same way, so we
	// don't test them repeatedly
}

func testCompileTimeDeprecation(t *testing.T, code, wantWarning string, level int) {
	t.Helper()
	progtest.SetDeprecationLevel(t, level)

	ev := NewEvaler()
	errOutput := new(bytes.Buffer)

	parseErr, compileErr := ev.Check(parse.Source{Code: code}, errOutput)
	if parseErr != nil {
		t.Errorf("got parse err %v", parseErr)
	}
	if compileErr != nil {
		t.Errorf("got compile err %v", compileErr)
	}

	warning := errOutput.String()
	if !strings.Contains(warning, wantWarning) {
		t.Errorf("got warning %q, want warning containing %q", warning, wantWarning)
	}
}