refactor(unity): made unity runner compatible with Linux target

components/unity/CMakeLists.txt

@@ -15,9 +15,9 @@ endif()
 
 if(CONFIG_UNITY_ENABLE_IDF_TEST_RUNNER)
     list(APPEND srcs "unity_runner.c")
-    # Note the following files are not compatible with the Linux target.
-    # On Linux, these are masked because we also don't use the IDF test runner there
-    list(APPEND srcs "unity_utils_freertos.c" "unity_utils_cache.c")
+    if(NOT "${target}" STREQUAL "linux")
+        list(APPEND srcs "unity_utils_freertos.c" "unity_utils_cache.c")
+    endif()
     list(APPEND requires "freertos")
 endif()
 

components/unity/unity_port_linux.c

@@ -7,11 +7,11 @@
 #include <stdbool.h>
 #include <unistd.h>
 #include <stdio.h>
+#include <ctype.h>
 #include <sys/time.h>
 #include "unity.h"
 #include "sdkconfig.h"
 
-
 static struct timeval s_test_start, s_test_stop;
 
 void unity_putc(int c)
@@ -25,6 +25,43 @@ void unity_flush(void)
     fsync(fileno(stdout));
 }
 
+static void esp_unity_readline(char* dst, size_t len)
+{
+    /* Read line from console with support for echoing and backspaces */
+    size_t write_index = 0;
+    for (;;) {
+        char c = 0;
+        int result = fgetc(stdin);
+        if (result == EOF) {
+          continue;
+        }
+        c = (char) result;
+        if (c == '\r' || c == '\n') {
+            /* Add null terminator and return on newline */
+            unity_putc('\n');
+            dst[write_index] = '\0';
+            return;
+        } else if (c == '\b') {
+            if (write_index > 0) {
+                /* Delete previously entered character */
+                write_index--;
+                unity_putc('\b');
+                unity_putc(' ');
+                unity_putc('\b');
+            }
+        } else if (len > 0 && write_index < len - 1 && !iscntrl(c)) {
+            /* Write a max of len - 1 characters to allow for null terminator */
+            unity_putc(c);
+            dst[write_index++] = c;
+        }
+    }
+}
+
+void unity_gets(char *dst, size_t len)
+{
+    esp_unity_readline(dst, len);
+}
+
 void unity_exec_time_start(void)
 {
     gettimeofday(&s_test_start, NULL);