strJoin() now supports linked list and added strJoin(sep, linked-list) test

t_expr_test.go

@@ -35,7 +35,9 @@ func TestExpr(t *testing.T) {
 		/*  19 */ {`a=2; ${a}`, int64(2), nil},
 		/*  20 */ {`$_=2; $_`, int64(2), nil},
 		/*  21 */ {`$$`, dict.NewDict(map[any]any{"vars": dict.NewDict(nil), "funcs": dict.NewDict(nil)}), nil},
-		/*  22 */ {`
+		/*  22 */ {`builtin "string"; strJoin("-", [<"a", "b", "c">])`, nil, `strJoin(): invalid value [<"a", "b", "c">] (linked-list) for parameter "item"`},
+		/*  22 */ {`builtin ""`, nil, `strJoin(): invalid value [<"a", "b", "c">] (linked-list) for parameter "item"`},
+		/*  23 */ {`
 		ds={
 			"init":func(@end){@current=0 but true},
 			//"current":func(){current},
@@ -50,6 +52,6 @@ func TestExpr(t *testing.T) {
 	}
 	// t.Setenv("EXPR_PATH", ".")
 
-	// RunTestSuiteSpec(t, section, inputs, 19)
+	// RunTestSuiteSpec(t, section, inputs, 22)
 	RunTestSuite(t, section, inputs)
 }