diff --git a/backend/tests/testcommon.c b/backend/tests/testcommon.c
index 7c6463e6..6f8cb41c 100644
--- a/backend/tests/testcommon.c
+++ b/backend/tests/testcommon.c
@@ -1288,18 +1288,32 @@ int testUtilDataPath(char *buffer, int buffer_size, const char *subdir, const ch
     int filename_len = filename ? (int) strlen(filename) : 0;
     char *s, *s2;
     int len;
+    char *cmake_src_dir;
 #ifdef _WIN32
     int i;
 #endif
 
-    if (getcwd(buffer, buffer_size) == NULL) {
-        fprintf(stderr, "testUtilDataPath: getcwd NULL buffer_size %d\n", buffer_size);
-        return 0;
+    if ((cmake_src_dir = getenv("CMAKE_CURRENT_SOURCE_DIR")) != NULL) {
+        len = (int) strlen(cmake_src_dir);
+        if (len <= 0 || len >= buffer_size) {
+            fprintf(stderr, "testUtilDataPath: warning CMAKE_CURRENT_SOURCE_DIR len %d, ignoring\n", len);
+            cmake_src_dir = NULL;
+        } else {
+            strcpy(buffer, cmake_src_dir);
+        }
     }
-    len = (int) strlen(buffer);
-    if (len <= 0) {
-        fprintf(stderr, "testUtilDataPath: strlen <= 0\n");
-        return 0;
+
+    if (cmake_src_dir == NULL) {
+        if (getcwd(buffer, buffer_size) == NULL) {
+            fprintf(stderr, "testUtilDataPath: getcwd NULL buffer_size %d\n", buffer_size);
+            return 0;
+        }
+        len = (int) strlen(buffer);
+
+        if (len <= 0) {
+            fprintf(stderr, "testUtilDataPath: strlen <= 0\n");
+            return 0;
+        }
     }
 #ifdef _WIN32
     for (i = 0; i < len; i++) {
@@ -1336,7 +1350,7 @@ int testUtilDataPath(char *buffer, int buffer_size, const char *subdir, const ch
         *s = '\0';
         len = s - buffer;
     }
-    if ((s = strrchr(buffer, '/')) != NULL) { // Remove "build" dir
+    if (cmake_src_dir == NULL && (s = strrchr(buffer, '/')) != NULL) { // Remove "build" dir
         *s = '\0';
         len = s - buffer;
     }
diff --git a/cmake/zint_add_test.cmake b/cmake/zint_add_test.cmake
index 86ae0f68..1fb0329b 100644
--- a/cmake/zint_add_test.cmake
+++ b/cmake/zint_add_test.cmake
@@ -8,9 +8,11 @@ macro(zint_add_test test_name test_command)
     add_executable(${test_command} ${test_command}.c)
     target_link_libraries(${test_command} testcommon ${ADDITIONAL_LIBS})
     add_test(${test_name} ${test_command})
+    set_tests_properties(${test_name} PROPERTIES ENVIRONMENT "CMAKE_CURRENT_SOURCE_DIR=${CMAKE_CURRENT_SOURCE_DIR}")
     if(ZINT_STATIC)
         add_executable(${test_command}-static ${test_command}.c)
         target_link_libraries(${test_command}-static testcommon-static ${ADDITIONAL_LIBS})
         add_test(${test_name}-static ${test_command}-static)
+        set_tests_properties(${test_name}-static PROPERTIES ENVIRONMENT "CMAKE_CURRENT_SOURCE_DIR=${CMAKE_CURRENT_SOURCE_DIR}")
     endif()
 endmacro()