1 files changed, 80 insertions, 0 deletions
diff --git a/gcc/testsuite/libgdiagnostics.dg/test-message-buffer.c b/gcc/testsuite/libgdiagnostics.dg/test-message-buffer.c
new file mode 100644
index 0000000..a958fc5
--- /dev/null
+++ b/gcc/testsuite/libgdiagnostics.dg/test-message-buffer.c
@@ -0,0 +1,80 @@
+/* Example of using a message buffer to build the text of a diagnostic
+   in pieces before emitting it.  */
+
+#include "libgdiagnostics.h"
+#include "test-helpers.h"
+
+int
+main ()
+{
+  begin_test ("test-message-buffer.c.exe",
+	      "test-message-buffer.c.sarif",
+	      __FILE__, "c");
+
+  diagnostic_event_id event_id = 0;
+
+  /* begin quoted source */
+  diagnostic *d = diagnostic_begin (diag_mgr,
+				    DIAGNOSTIC_LEVEL_ERROR);
+
+  diagnostic_message_buffer *msg_buf = diagnostic_message_buffer_new ();
+
+  /* Add a null-terminated string.  */
+  diagnostic_message_buffer_append_str (msg_buf, "this is a string; ");
+
+  /* Add a length-specified string.  */
+  diagnostic_message_buffer_append_text (msg_buf, "foobar", 3);
+
+  /* "printf"-formatting.  */
+  diagnostic_message_buffer_append_printf (msg_buf,
+					   "; int: %i str: %s; ",
+					   42, "mostly harmless");
+
+  /* Adding a URL.  */
+  diagnostic_message_buffer_begin_url (msg_buf, "https://example.com/");
+  diagnostic_message_buffer_append_str (msg_buf, "this is a link");  
+  diagnostic_message_buffer_end_url (msg_buf);
+
+  diagnostic_message_buffer_append_str (msg_buf, " ");  
+
+  /* Add quoted text.  */
+  diagnostic_message_buffer_begin_quote (msg_buf);
+  diagnostic_message_buffer_append_str (msg_buf, "this is quoted");  
+  diagnostic_message_buffer_end_quote (msg_buf);
+  
+  diagnostic_message_buffer_append_str (msg_buf, " ");  
+
+  /* Add colorized text.  */
+  diagnostic_message_buffer_begin_color (msg_buf, "highlight-a");
+  diagnostic_message_buffer_append_str (msg_buf, "highlight A");  
+  diagnostic_message_buffer_end_color (msg_buf);
+
+  diagnostic_message_buffer_append_str (msg_buf, " ");
+  
+  diagnostic_message_buffer_begin_color (msg_buf, "highlight-b");
+  diagnostic_message_buffer_append_str (msg_buf, "highlight B");  
+  diagnostic_message_buffer_end_color (msg_buf);
+  
+  diagnostic_message_buffer_append_str (msg_buf, " ");
+
+  /* Add an event ID.  This will be printed as "(1)".  */
+  diagnostic_message_buffer_append_event_id (msg_buf, event_id);
+  
+  /* Add an ASCII char.  */
+  diagnostic_message_buffer_append_byte (msg_buf, '.');
+
+  diagnostic_finish_via_msg_buf (d, msg_buf);
+  /* end quoted source */
+
+  return end_test ();
+};
+
+/* Verify the output from the text sink.
+   { dg-regexp "test-message-buffer.c.exe: error: this is a string; foo; int: 42 str: mostly harmless; this is a link 'this is quoted' highlight A highlight B \\(1\\)." } */
+
+/* Verify that some JSON was written to a file with the expected name:
+   { dg-final { verify-sarif-file } } */
+
+/* Use a Python script to verify various properties about the generated
+   .sarif file:
+   { dg-final { run-sarif-pytest test-message-buffer.c "test-message-buffer-c.py" } } */