From 698af84fcf8bdcfa3db4936a88e84c354331a84a Mon Sep 17 00:00:00 2001
From: "W. Felix Handte" <w@felixhandte.com>
Date: Fri, 21 Apr 2023 16:14:27 -0400
Subject: [PATCH] Add CI Test for Excluding Matchfinders

---
 .github/workflows/dev-short-tests.yml |  1 +
 tests/playTests.sh                    | 34 ++++++++++++++-------------
 2 files changed, 19 insertions(+), 16 deletions(-)

diff --git a/.github/workflows/dev-short-tests.yml b/.github/workflows/dev-short-tests.yml
index d6f2db886..566c84d01 100644
--- a/.github/workflows/dev-short-tests.yml
+++ b/.github/workflows/dev-short-tests.yml
@@ -348,6 +348,7 @@ jobs:
         make clean && make check MOREFLAGS="-Werror -DHUF_FORCE_DECOMPRESS_X2 -DZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG"
         make clean && make -j all MOREFLAGS="-Werror -DZSTD_NO_INLINE -DZSTD_STRIP_ERROR_STRINGS"
         make clean && make check MOREFLAGS="-Werror -DZSTD_NO_INLINE -DZSTD_STRIP_ERROR_STRINGS"
+        make clean && make check ZSTD_LIB_EXCLUDE_COMPRESSORS_DFAST_AND_UP=1 MOREFLAGS="-Werror"
 
   dynamic-bmi2:
     runs-on: ubuntu-latest
diff --git a/tests/playTests.sh b/tests/playTests.sh
index 718398f82..f51776170 100755
--- a/tests/playTests.sh
+++ b/tests/playTests.sh
@@ -1602,22 +1602,24 @@ roundTripTest -g1M -P50 "1 --single-thread --long=29" " --long=28 --memory=512MB
 roundTripTest -g1M -P50 "1 --single-thread --long=29" " --zstd=wlog=28 --memory=512MB"
 
 
-println "\n===>  zstd long distance matching with optimal parser compressed size tests "
-optCSize16=$(datagen -g511K | zstd -16 -c | wc -c)
-longCSize16=$(datagen -g511K | zstd -16 --long -c | wc -c)
-optCSize19=$(datagen -g2M | zstd -19 -c | wc -c)
-longCSize19=$(datagen -g2M | zstd -19 --long -c | wc -c)
-optCSize19wlog23=$(datagen -g2M | zstd -19 -c  --zstd=wlog=23 | wc -c)
-longCSize19wlog23=$(datagen -g2M | zstd -19 -c --long=23 | wc -c)
-if [ "$longCSize16" -gt "$optCSize16" ]; then
-    echo using --long on compression level 16 should not cause compressed size regression
-    exit 1
-elif [ "$longCSize19" -gt "$optCSize19" ]; then
-    echo using --long on compression level 19 should not cause compressed size regression
-    exit 1
-elif [ "$longCSize19wlog23" -gt "$optCSize19wlog23" ]; then
-    echo using --long on compression level 19 with wLog=23 should not cause compressed size regression
-    exit 1
+if [ "$ZSTD_LIB_EXCLUDE_COMPRESSORS_DFAST_AND_UP" -ne "1" ]; then
+    println "\n===>  zstd long distance matching with optimal parser compressed size tests "
+    optCSize16=$(datagen -g511K | zstd -16 -c | wc -c)
+    longCSize16=$(datagen -g511K | zstd -16 --long -c | wc -c)
+    optCSize19=$(datagen -g2M | zstd -19 -c | wc -c)
+    longCSize19=$(datagen -g2M | zstd -19 --long -c | wc -c)
+    optCSize19wlog23=$(datagen -g2M | zstd -19 -c  --zstd=wlog=23 | wc -c)
+    longCSize19wlog23=$(datagen -g2M | zstd -19 -c --long=23 | wc -c)
+    if [ "$longCSize16" -gt "$optCSize16" ]; then
+        echo using --long on compression level 16 should not cause compressed size regression
+        exit 1
+    elif [ "$longCSize19" -gt "$optCSize19" ]; then
+        echo using --long on compression level 19 should not cause compressed size regression
+        exit 1
+    elif [ "$longCSize19wlog23" -gt "$optCSize19wlog23" ]; then
+        echo using --long on compression level 19 with wLog=23 should not cause compressed size regression
+        exit 1
+    fi
 fi
 
 println "\n===>  zstd asyncio tests "