continued work on test framework

test/unit/test_mem_map.c

@@ -1,10 +1,10 @@
 #include "unicorn_test.h"
 #include <stdio.h>
+#include <string.h>
 
+/* Called before every test to set up a new instance */
 static int setup(void **state)
 {
-    fprintf(stderr, "~~~ setup() ~~~\n");
-
     uc_engine *uc;
 
     uc_assert_success(uc_open(UC_ARCH_X86, UC_MODE_32, &uc));
@@ -13,23 +13,90 @@ static int setup(void **state)
     return 0;
 }
 
+/* Called after every test to clean up */
 static int teardown(void **state)
 {
     uc_engine *uc = *state;
-    fprintf(stderr, "~~~ teardown() ~~~\n");
 
     uc_assert_success(uc_close(uc));
+
+    *state = NULL;
     return 0;
 }
 
+/******************************************************************************/
 
+
+/**
+ * A basic test showing mapping of memory, and reading/writing it
+ */
 static void test_basic(void **state)
 {
+    uc_engine *uc = *state;
+    const uint64_t mem_start = 0x1000;
+    const uint64_t mem_len   = 0x1000;
+    const uint64_t test_addr = mem_start + 0x100;
+
+    /* Map a region */
+    uc_assert_success(uc_mem_map(uc, mem_start, mem_len, UC_PROT_NONE));
+
+    /* Write some data to it */
+    uc_assert_success(uc_mem_write(uc, test_addr, "test", 4));
+
+    uint8_t buf[4];
+    memset(buf, 0xCC, sizeof(buf));
+
+    /* Read it back */
+    uc_assert_success(uc_mem_read(uc, test_addr, buf, sizeof(buf)));
+
+    /* And make sure it matches what we expect */
+    assert_memory_equal(buf, "test", 4);
+
+    /* Unmap the region */
+    uc_assert_success(uc_mem_unmap(uc, mem_start, mem_len));
 }
 
+/**
+ * Verify that we can read/write across memory map region boundaries
+ */
+static void test_rw_across_boundaries(void **state)
+{
+    uc_engine *uc = *state;
+
+    /* Map in two adjacent regions */
+    uc_assert_success(uc_mem_map(uc, 0,      0x1000, 0));   /* 0x0000 - 0x1000 */
+    uc_assert_success(uc_mem_map(uc, 0x1000, 0x1000, 0));   /* 0x1000 - 0x2000 */
+
+    const uint64_t addr = 0x1000 - 2;                       /* 2 bytes before end of block */
+
+    /* Write some data across the boundary */
+    uc_assert_success(uc_mem_write(uc, addr, "test", 4));
+
+    uint8_t buf[4];
+    memset(buf, 0xCC, sizeof(buf));
+
+    /* Read the data across the boundary */
+    uc_assert_success(uc_mem_read(uc, addr, buf, sizeof(buf)));
+
+    assert_memory_equal(buf, "test", 4);
+}
+
+static void test_bad_unmap(void **state)
+{
+    uc_engine *uc = *state;
+    uc_err err;
+
+    /* Try to unmap memory that has not been mapped */
+    err = uc_mem_unmap(uc, 0x0, 0x1000);
+    assert_int_not_equal(err, UC_ERR_OK);
+}
+
+
 int main(void) {
     const struct CMUnitTest tests[] = {
-        cmocka_unit_test(test_basic),
+        cmocka_unit_test_setup_teardown(test_basic, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_bad_unmap, setup, teardown),
+        cmocka_unit_test_setup_teardown(test_rw_across_boundaries, setup, teardown),
     };
-    return cmocka_run_group_tests(tests, setup, teardown);
+    return cmocka_run_group_tests(tests, NULL, NULL);
 }