From 31ccdae7be0ec5a2231bdd475b8c3065b5874390 Mon Sep 17 00:00:00 2001
From: Tim Davis <DrTimothyAldenDavis@gmail.com>
Date: Fri, 16 May 2025 18:56:51 -0500
Subject: [PATCH] test_diameter: check scalar results (exact diameter)

---
 experimental/test/test_diameter.c | 30 +++++++++++++++++-------------
 1 file changed, 17 insertions(+), 13 deletions(-)

diff --git a/experimental/test/test_diameter.c b/experimental/test/test_diameter.c
index 2a72322e65..92c0b1ca0b 100644
--- a/experimental/test/test_diameter.c
+++ b/experimental/test/test_diameter.c
@@ -15,7 +15,8 @@
 
 //------------------------------------------------------------------------------
 
-// FIXME: need to check the results with correct their values
+// FIXME: vector results (peripheral, eccentricity, level, and parent) are not
+// checked with exact values
 
 #include <stdio.h>
 #include <acutest.h>
@@ -39,6 +40,7 @@ char filename [LEN+1] ;
 
 typedef struct
 {
+    int diameter ;
     bool symmetric ;
     const char *name ;
 }
@@ -46,17 +48,17 @@ matrix_info ;
 
 const matrix_info files [ ] =
 {
-    { 1, "A.mtx" },
-    { 1, "jagmesh7.mtx" },
-    { 0, "west0067.mtx" }, // unsymmetric
-    { 1, "bcsstk13.mtx" },
-    { 1, "karate.mtx" },
-    { 1, "ldbc-cdlp-undirected-example.mtx" },
-    { 1, "ldbc-undirected-example-bool.mtx" },
-    { 1, "ldbc-undirected-example-unweighted.mtx" },
-    { 1, "ldbc-undirected-example.mtx" },
-    { 1, "ldbc-wcc-example.mtx" },
-    { 0, "" },
+    {  2, 1, "A.mtx" },
+    { 60, 1, "jagmesh7.mtx" },
+    {  6, 0, "west0067.mtx" }, // unsymmetric
+    { 11, 1, "bcsstk13.mtx" },
+    {  5, 1, "karate.mtx" },
+    {  4, 1, "ldbc-cdlp-undirected-example.mtx" },
+    {  4, 1, "ldbc-undirected-example-bool.mtx" },
+    {  4, 1, "ldbc-undirected-example-unweighted.mtx" },
+    {  4, 1, "ldbc-undirected-example.mtx" },
+    {  3, 1, "ldbc-wcc-example.mtx" },
+    {  0, 0, "" },
 } ;
 
 #undef OK
@@ -109,7 +111,9 @@ void test_diameter (void)
         OK (LAGraph_ExactDiameter (&diameter, &peripheral, &eccentricity,
             G, 8, msg)) ;
 
-        printf ("\ndiameter: %" PRIu64 "\n", diameter) ;
+        printf ("\n%s exact diameter: %" PRIu64 "\n", aname, diameter) ;
+        TEST_CHECK (diameter == files [k].diameter) ;
+
         printf ("\nperipheral:\n") ;
         OK (LAGraph_Vector_Print (peripheral, pr, stdout, msg)) ;
         printf ("\neccentricity:\n") ;