rule/value_test.go

package rule

import (
	"testing"

	bzl "github.com/bazelbuild/buildtools/build"
	"github.com/google/go-cmp/cmp"
)

func TestExprFromValue(t *testing.T) {
	for name, tt := range map[string]struct {
		val  interface{}
		want bzl.Expr
	}{
		"glob value": {
			val: GlobValue{
				Patterns: []string{"a", "b"},
			},
			want: &bzl.CallExpr{
				X: &bzl.LiteralExpr{Token: "glob"},
				List: []bzl.Expr{
					&bzl.ListExpr{
						List: []bzl.Expr{
							&bzl.StringExpr{Value: "a"},
							&bzl.StringExpr{Value: "b"},
						},
					},
				},
			},
		},
		"glob value with excludes": {
			val: GlobValue{
				Patterns: []string{"a", "b"},
				Excludes: []string{"c", "d"},
			},
			want: &bzl.CallExpr{
				X: &bzl.LiteralExpr{Token: "glob"},
				List: []bzl.Expr{
					&bzl.ListExpr{
						List: []bzl.Expr{
							&bzl.StringExpr{Value: "a"},
							&bzl.StringExpr{Value: "b"},
						},
					},
					&bzl.AssignExpr{
						LHS: &bzl.LiteralExpr{Token: "exclude"},
						Op:  "=",
						RHS: &bzl.ListExpr{
							List: []bzl.Expr{
								&bzl.StringExpr{Value: "c"},
								&bzl.StringExpr{Value: "d"},
							},
						},
					},
				},
			},
		},
	} {
		t.Run(name, func(t *testing.T) {
			got := ExprFromValue(tt.val)
			if diff := cmp.Diff(tt.want, got); diff != "" {
				t.Errorf("ExprFromValue() mismatch (-want +got):\n%s", diff)
			}
		})
	}
}