[RFC PATCH v4 17/28] test: hush: Fix instructions list tests for hush 2021

[Francis Laniel]

Modifies the expected result for hush 2021.
Indeed, there were bugs in actual U-Boot hush which were fixed in upstream
Busybox.
As hush 2021 is based on upstream Busybox, these bugs no longer exist.

Signed-off-by: Francis Laniel <francis.laniel at amarulasolutions.com>
---
 test/hush/list.c | 69 +++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 65 insertions(+), 4 deletions(-)

diff --git a/test/hush/list.c b/test/hush/list.c
index 052cf2783c..6f8f10f15e 100644
--- a/test/hush/list.c
+++ b/test/hush/list.c
@@ -9,6 +9,7 @@
 #include <env_attr.h>
 #include <test/hush.h>
 #include <test/ut.h>
+#include <asm/global_data.h>
 
 static int hush_test_semicolon(struct unit_test_state *uts)
 {
@@ -46,12 +47,43 @@ static int hush_test_or(struct unit_test_state *uts)
 }
 HUSH_TEST(hush_test_or, 0);
 
+DECLARE_GLOBAL_DATA_PTR;
+
 static int hush_test_and_or(struct unit_test_state *uts)
 {
 	/* A && B || C truth table. */
 	ut_asserteq(1, run_command("false && false || false", 0));
-	ut_asserteq(1, run_command("false && false || true", 0));
-	ut_asserteq(1, run_command("false && true || true", 0));
+
+	if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		ut_asserteq(1, run_command("false && false || true", 0));
+	} else if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/*
+		 * This difference seems to come from a bug solved in Busybox
+		 * hush.
+		 *
+		 * Indeed, the following expression can be seen like this:
+		 * (false && false) || true
+		 * So, (false && false) returns 1, the second false is not
+		 * executed, and true is executed because of ||.
+		 */
+		ut_assertok(run_command("false && false || true", 0));
+	}
+
+	if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		ut_asserteq(1, run_command("false && true || true", 0));
+	} else if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/*
+		 * This difference seems to come from a bug solved in Busybox
+		 * hush.
+		 *
+		 * Indeed, the following expression can be seen like this:
+		 * (false && true) || true
+		 * So, (false && true) returns 1, the true is not executed, and
+		 * true is executed because of ||.
+		 */
+		ut_assertok(run_command("false && true || true", 0));
+	}
+
 	ut_asserteq(1, run_command("false && true || false", 0));
 	ut_assertok(run_command("true && true || false", 0));
 	ut_asserteq(1, run_command("true && false || false", 0));
@@ -69,8 +101,37 @@ static int hush_test_or_and(struct unit_test_state *uts)
 	ut_asserteq(1, run_command("false || false && true", 0));
 	ut_assertok(run_command("false || true && true", 0));
 	ut_asserteq(1, run_command("false || true && false", 0));
-	ut_assertok(run_command("true || true && false", 0));
-	ut_assertok(run_command("true || false && false", 0));
+
+	if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		ut_assertok(run_command("true || true && false", 0));
+	} else if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/*
+		 * This difference seems to come from a bug solved in Busybox
+		 * hush.
+		 *
+		 * Indeed, the following expression can be seen like this:
+		 * (true || true) && false
+		 * So, (true || true) returns 0, the second true is not
+		 * executed, and then false is executed because of &&.
+		 */
+		ut_asserteq(1, run_command("true || true && false", 0));
+	}
+
+	if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		ut_assertok(run_command("true || false && false", 0));
+	} else if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/*
+		 * This difference seems to come from a bug solved in Busybox
+		 * hush.
+		 *
+		 * Indeed, the following expression can be seen like this:
+		 * (true || false) && false
+		 * So, (true || false) returns 0, the false is not executed, and
+		 * then false is executed because of &&.
+		 */
+		ut_asserteq(1, run_command("true || false && false", 0));
+	}
+
 	ut_assertok(run_command("true || false && true", 0));
 	ut_assertok(run_command("true || true && true", 0));
 
-- 
2.25.1