Implement tokenstream_get_test and simplified assert_log_file using test names

v0/test.h

@@ -4,6 +4,10 @@
 #ifndef TEST_H
 #define TEST_H
 
+#include "token.h"
+
+#include <stdbool.h>
+
 typedef void (*Test)(void);
 
 /**
@@ -39,21 +43,16 @@ void assert_str(const char* expected, const char* actual, const char* msg);
 void assert_log(const char* expected, const char* msg);
 
 /**
- * Asserts that the logged output matches the content of a file.
+ * Asserts that the logged output matches the content of the file `v0/tests/xyz.log`, where xyz is the test name.
  * If GENERATE_GOLDEN=1, the file is overwritten with the actual output.
  */
-void assert_log_file(const char* filepath, const char* msg);
+void assert_log_file(const char* msg);
 
 /**
  * Asserts that two integers are equal.
  */
 void assert_int(int expected, int actual, const char* msg);
 
-/**
- * Reads the content of a file into a newly allocated string.
- */
-char* read_file_content(const char* filepath);
-
 /**
  * Asserts that a condition is true.
  */
@@ -64,4 +63,10 @@ void assert_true(bool condition, const char* msg);
  */
 void assert_false(bool condition, const char* msg);
 
+/**
+ * Get the token stream used for this test.
+ * It reads from the `v0/tests/xyz.c2` file, where xyz is the test name.
+ */
+TokenStream* tokenstream_get_test(void);
+
 #endif