Add more tests

Author: antonmedv

expr_test.go

@@ -2318,23 +2318,16 @@ func TestEval_slices_out_of_bound(t *testing.T) {
 	}
 }
 
-func TestExpr_custom_tests(t *testing.T) {
-	f, err := os.Open("custom_tests.json")
-	if os.IsNotExist(err) {
-		t.Skip("no custom tests")
-		return
+func TestExpr_timeout(t *testing.T) {
+	tests := []struct{ code string }{
+		{`-999999..999999`},
+		{`map(1..999999, 1..999999)`},
+		{`map(1..999999, repeat('a', #))`},
 	}
 
-	require.NoError(t, err, "open file error")
-	defer f.Close()
-
-	var tests []string
-	err = json.NewDecoder(f).Decode(&tests)
-	require.NoError(t, err, "decode json error")
-
-	for id, tt := range tests {
-		t.Run(fmt.Sprintf("line %v", id+2), func(t *testing.T) {
-			program, err := expr.Compile(tt)
+	for _, tt := range tests {
+		t.Run(tt.code, func(t *testing.T) {
+			program, err := expr.Compile(tt.code)
 			require.NoError(t, err)
 
 			timeout := make(chan bool, 1)

test/issues/840/issue_test.go

@@ -0,0 +1,30 @@
+package issue_test
+
+import (
+	"testing"
+
+	"github.com/expr-lang/expr"
+	"github.com/expr-lang/expr/internal/testify/require"
+)
+
+func TestEnvFieldMethods(t *testing.T) {
+	program, err := expr.Compile(`Func(0)`, expr.Env(&Env{}))
+	require.NoError(t, err)
+
+	env := &Env{}
+	env.Func = func() int {
+		return 42
+	}
+
+	out, err := expr.Run(program, Env{})
+	require.NoError(t, err)
+
+	require.Equal(t, 42, out)
+}
+
+type Env struct {
+	EmbeddedEnv
+	Func func() int
+}
+
+type EmbeddedEnv struct{}