console: separate record overflow logic and add

console_record_isempty as avail doesn't serve to know
output has been read fully with readline's

common/console.c

@@ -818,6 +818,8 @@ int console_record_init(void)
 	ret = membuff_new((struct membuff *)&gd->console_in,
 			  CONFIG_CONSOLE_RECORD_IN_SIZE);
 
+	gd->flags |= GD_FLG_RECORD;
+
 	return ret;
 }
 
@@ -836,11 +838,13 @@ int console_record_reset_enable(void)
 	return 0;
 }
 
-int console_record_readline(char *str, int maxlen)
+bool console_record_overflow(void)
 {
-	if (gd->flags & GD_FLG_RECORD_OVF)
-		return -ENOSPC;
+	return gd->flags & GD_FLG_RECORD_OVF ? true : false;
+}
 
+int console_record_readline(char *str, int maxlen)
+{
 	return membuff_readline((struct membuff *)&gd->console_out, str,
 				maxlen, '\0');
 }
@@ -850,6 +854,11 @@ int console_record_avail(void)
 	return membuff_avail((struct membuff *)&gd->console_out);
 }
 
+bool console_record_isempty(void)
+{
+	return membuff_isempty((struct membuff *)&gd->console_out);
+}
+
 int console_in_puts(const char *str)
 {
 	return membuff_put((struct membuff *)&gd->console_in, str, strlen(str));

include/console.h

@@ -64,6 +64,13 @@ void console_record_reset(void);
  */
 int console_record_reset_enable(void);
 
+/**
+ * console_record_overflow() - returns state of buffers overflow
+ * 
+ * Return: true if the console buffer was overflowed
+ */
+bool console_record_overflow(void);
+
 /**
  * console_record_readline() - Read a line from the console output
  *
@@ -84,6 +91,13 @@ int console_record_readline(char *str, int maxlen);
  */
 int console_record_avail(void);
 
+/**
+ * console_record_isempty() - Returns if console output is empty
+ *
+ * Return: true if empty
+ */
+bool console_record_isempty(void);
+
 /**
  * console_in_puts() - Write a string to the console input buffer
  *

test/ut.c

@@ -53,15 +53,14 @@ long ut_check_delta(ulong last)
 
 static int readline_check(struct unit_test_state *uts)
 {
-	int ret;
-
-	ret = console_record_readline(uts->actual_str, sizeof(uts->actual_str));
-	if (ret == -ENOSPC) {
+	if (console_record_overflow()) {
 		ut_fail(uts, __FILE__, __LINE__, __func__,
 			"Console record buffer too small - increase CONFIG_CONSOLE_RECORD_OUT_SIZE");
-		return ret;
+		return -ENOSPC;
 	}
 
+	console_record_readline(uts->actual_str, sizeof(uts->actual_str));
+
 	return 0;
 }