Change file naming

This is a follow-up to previous commit.

unit/src/Unit.c

@@ -0,0 +1,61 @@
+#include <BH/Unit.h>
+#include <stdlib.h>
+
+typedef struct BH_Unit
+{
+    struct BH_Unit *next;
+    const char *name;
+    BH_UnitCallback cb;
+} BH_Unit;
+
+
+static BH_Unit *root = NULL;
+
+
+void BH_UnitAdd(const char *name, BH_UnitCallback cb)
+{
+    BH_Unit *unit, *current;
+
+    /* Allocate and fill new unit test entry */
+    unit = malloc(sizeof(*unit));
+    if (!unit)
+        return;
+
+    unit->next = NULL;
+    unit->name = name;
+    unit->cb = cb;
+
+    /* Append unit test entry */
+    current = root;
+    while (current && current->next)
+        current = current->next;
+
+    if (current)
+        current->next = unit;
+    else
+        root = unit;
+}
+
+
+int BH_UnitRun(void)
+{
+    BH_Unit *current;
+    printf("Running tests...\n");
+
+    current = root;
+    while (current)
+    {
+        printf("%s\n", current->name);
+        if (current->cb())
+        {
+            printf("\tFAIL\n");
+            return -1;
+        }
+        printf("\tPASS\n");
+        fflush(stdout);
+        current = current->next;
+    }
+
+    return 0;
+}
+