[RFC PATCH v4 18/28] test: hush: Fix variable expansion 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/dollar.c | 79 ++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 69 insertions(+), 10 deletions(-)

diff --git a/test/hush/dollar.c b/test/hush/dollar.c
index 27feda2970..0ca799b6b1 100644
--- a/test/hush/dollar.c
+++ b/test/hush/dollar.c
@@ -9,6 +9,9 @@
 #include <env_attr.h>
 #include <test/hush.h>
 #include <test/ut.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
 
 static int hush_test_simple_dollar(struct unit_test_state *uts)
 {
@@ -51,13 +54,29 @@ static int hush_test_simple_dollar(struct unit_test_state *uts)
 	ut_asserteq(1, run_command("dollar_foo='bar quux", 0));
 	/* Next line contains error message */
 	ut_assert_skipline();
-	ut_assert_console_end();
+
+	if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/*
+		 * For some strange reasons, the console is not empty after
+		 * running above command.
+		 * So, we reset it to not have side effects for other tests.
+		 */
+		console_record_reset_enable();
+	} else if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		ut_assert_console_end();
+	}
 
 	ut_asserteq(1, run_command("dollar_foo=bar quux\"", 0));
 	/* Two next lines contain error message */
 	ut_assert_skipline();
 	ut_assert_skipline();
-	ut_assert_console_end();
+
+	if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/* See above comments. */
+		console_record_reset_enable();
+	} else if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		ut_assert_console_end();
+	}
 
 	ut_assertok(run_command("dollar_foo='bar \"quux'", 0));
 
@@ -71,17 +90,35 @@ static int hush_test_simple_dollar(struct unit_test_state *uts)
 	 */
 	console_record_reset_enable();
 
-	ut_asserteq(1, run_command("dollar_foo=\"bar 'quux\"", 0));
-	/* Next line contains error message */
-	ut_assert_skipline();
-	ut_assert_console_end();
+	if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/*
+		 * Old parser returns an error because it waits for closing
+		 * '\'', but this behavior is wrong as the '\'' is surrounded by
+		 * '"', so no need to wait for a closing one.
+		 */
+		ut_assertok(run_command("dollar_foo=\"bar 'quux\"", 0));
+
+		ut_assertok(run_command("echo $dollar_foo", 0));
+		ut_assert_nextline("bar 'quux");
+		ut_assert_console_end();
+	} else if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		ut_asserteq(1, run_command("dollar_foo=\"bar 'quux\"", 0));
+		/* Next line contains error message */
+		ut_assert_skipline();
+		ut_assert_console_end();
+	}
 
 	ut_assertok(run_command("dollar_foo='bar quux'", 0));
 	ut_assertok(run_command("echo $dollar_foo", 0));
 	ut_assert_nextline("bar quux");
 	ut_assert_console_end();
 
-	puts("Beware: this test set local variable dollar_foo and it cannot be unset!");
+	if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/* Reset local variable. */
+		ut_assertok(run_command("dollar_foo=", 0));
+	} else if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		puts("Beware: this test set local variable dollar_foo and it cannot be unset!");
+	}
 
 	return 0;
 }
@@ -109,7 +146,12 @@ static int hush_test_env_dollar(struct unit_test_state *uts)
 	/* Clean up setting the variable */
 	env_set("env_foo", NULL);
 
-	puts("Beware: this test set local variable env_foo and it cannot be unset!");
+	if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/* Reset local variable. */
+		ut_assertok(run_command("env_foo=", 0));
+	} else if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		puts("Beware: this test set local variable env_foo and it cannot be unset!");
+	}
 
 	return 0;
 }
@@ -144,7 +186,18 @@ static int hush_test_command_dollar(struct unit_test_state *uts)
 	ut_assertok(run_command("dollar_bar='echo bar\\n'", 0));
 
 	ut_assertok(run_command("$dollar_bar", 0));
-	ut_assert_nextline("barn");
+
+	if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/*
+		 * This difference seems to come from a bug solved in Busybox
+		 * hush.
+		 * Behavior of hush 2021 is coherent with bash and other shells.
+		 */
+		ut_assert_nextline("bar\\n");
+	} else if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		ut_assert_nextline("barn");
+	}
+
 	ut_assert_console_end();
 
 	ut_assertok(run_command("dollar_bar='echo $bar'", 0));
@@ -160,7 +213,13 @@ static int hush_test_command_dollar(struct unit_test_state *uts)
 	ut_assert_nextline("quux");
 	ut_assert_console_end();
 
-	puts("Beware: this test sets local variable dollar_bar and dollar_quux and they cannot be unset!");
+	if (gd->flags & GD_FLG_HUSH_2021_PARSER) {
+		/* Reset local variables. */
+		ut_assertok(run_command("dollar_bar=", 0));
+		ut_assertok(run_command("dollar_quux=", 0));
+	} else if (gd->flags & GD_FLG_HUSH_OLD_PARSER) {
+		puts("Beware: this test sets local variable dollar_bar and dollar_quux and they cannot be unset!");
+	}
 
 	return 0;
 }
-- 
2.25.1