From d5474322701f94d5c6e40907aae76b31cfc49915 Mon Sep 17 00:00:00 2001
From: Maxime Bloch <me@mcbloch.dev>
Date: Tue, 28 Jan 2020 22:32:32 +0100
Subject: [PATCH] Maybe include the file I want to commit

---
 kernel/tests/tests.c  | 91 +++++++++++++++++++++++++++++++++++++++++++
 kernel/util/printer.c | 62 +++++++++++++++++++++++++++++
 2 files changed, 153 insertions(+)
 create mode 100644 kernel/tests/tests.c
 create mode 100644 kernel/util/printer.c

diff --git a/kernel/tests/tests.c b/kernel/tests/tests.c
new file mode 100644
index 0000000..1ccef94
--- /dev/null
+++ b/kernel/tests/tests.c
@@ -0,0 +1,91 @@
+#ifndef TESTS_C
+#define TESTS_C
+
+#define TESTS_ENABLED
+#ifdef TESTS_ENABLED
+
+
+#define mu_assert(message, test) do { if (!(test)) return message; } while (0)
+#define mu_run_test(test) do { char *message = test(); tests_run++; \
+                                if (message) return message; } while (0)
+extern int tests_run;
+
+#include "../memory.c"
+#include <stddef.h>
+
+
+int tests_run = 0;
+
+
+static char *test_memory() {
+
+    ll_node *ll_head = __new_node();
+    ll_head->data = malloc(sizeof(size_t) * 5000);
+    ll_head->used = true;
+    ll_head->size = 1;
+    void *ptr0 = __alloc(ll_head, 5);
+    void *ptr1 = __alloc(ll_head, 5);
+    void *ptr4 = __alloc(ll_head, 5);
+    print(ll_head);
+    mu_assert("Error: chain should be complete at 1", ll_head->next != NULL);
+    mu_assert("Error: chain should be complete at 2", ll_head->next->next != NULL);
+    mu_assert("Error: chain should be complete at 3", ll_head->next->next->next != NULL);
+    mu_assert("Error: chain should be complete at 4", ll_head->next->next->next->next == NULL);
+
+    ll_node *current = ll_head;
+    while (current->next != NULL) {
+        current = current->next;
+
+        mu_assert("Error: block should have size 5", current->size == 5);
+        mu_assert("Error: block should be in use", current->used == true);
+    }
+
+    __free(ll_head, ptr1);
+    mu_assert("", ll_head->next->used == true);
+    mu_assert("", ll_head->next->next->used == false);
+    mu_assert("", ll_head->next->next->next->used == true);
+
+    printf("Alloc 3 bytes\n");
+    void *ptr2 = __alloc(ll_head, 3);
+    print(ll_head);
+
+    printf("Alloc 3 bytes\n");
+    __alloc(ll_head, 3);
+    print(ll_head);
+
+    printf("Alloc 2 bytes\n");
+    void *ptr3 = __alloc(ll_head, 2);
+    print(ll_head);
+
+    __free(ll_head, ptr2);
+    print(ll_head);
+    __free(ll_head, ptr4);
+    print(ll_head);
+    __free(ll_head, ptr3);
+    print(ll_head);
+
+    __free(ll_head, ptr0);
+    print(ll_head);
+    return 0;
+}
+
+static char *all_tests() {
+    mu_run_test(test_memory);
+    return 0;
+}
+//
+//int main(int argc, char **argv) {
+//    char *result = all_tests();
+//    if (result != 0) {
+//        printf("%s\n", result);
+//    } else {
+//        printf("ALL TESTS PASSED\n");
+//    }
+//    printf("Tests run: %d\n", tests_run);
+//
+//    return result != 0;
+//}
+
+#endif // TESTS_ENABLED
+
+#endif // TESTS_C
\ No newline at end of file
diff --git a/kernel/util/printer.c b/kernel/util/printer.c
new file mode 100644
index 0000000..91cf8b3
--- /dev/null
+++ b/kernel/util/printer.c
@@ -0,0 +1,62 @@
+#ifndef TABS_PRINTER_C
+#define TABS_PRINTER_C
+
+#include <stdarg.h>
+
+#include "../terminal.c"
+
+/**
+ * fmt is a string with specifiers where variables can be inserted.
+ *
+ * ex: ("Hello %s", "world") -> "Hello world"
+ *
+ * Specifiers are
+ *   - %c: character
+ *   - %d: digit (integer)
+ *   - %p: pointer (void*)
+ * @param fmt Formatter string
+ * @param ... Variable amount of arguments to be inserted
+ */
+void print(const char *fmt, ...) {
+    const char *p;
+    va_list argp;
+    int i;
+    char *s;
+    char fmtbuf[256];
+
+    va_start(argp, fmt);
+
+    for (p = fmt; *p != '\0'; p++)
+        if (*p != '%') {
+            terminal_putchar(*p);
+        } else {
+            switch (*++p) {
+                case 'c':
+                    i = va_arg(argp, int);
+
+                    terminal_putchar((char) i);
+                    break;
+                case 'd':
+                    i = va_arg(argp, int);
+                    s = itoa(i, fmtbuf, 10);
+                    terminal_writestring(s);
+                    break;
+                case 's':
+                    s = va_arg(argp, char *);
+                    terminal_writestring(s);
+                    break;
+                case 'x':
+                    i = va_arg(argp, int);
+                    s = itoa(i, fmtbuf, 16);
+                    terminal_writestring(s);
+                    break;
+                case '%':
+                    terminal_putchar('%');
+                    break;
+            }
+        }
+
+    va_end(argp);
+}
+
+#endif //TABS_PRINTER_C
\ No newline at end of file