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diff --git a/deps/libchdr/deps/zstd-1.5.5/tests/cli-tests/compression/adapt.sh b/deps/libchdr/deps/zstd-1.5.5/tests/cli-tests/compression/adapt.sh
new file mode 100755
index 00000000..30b9afaa
--- /dev/null
+++ b/deps/libchdr/deps/zstd-1.5.5/tests/cli-tests/compression/adapt.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -e
+
+# Test --adapt
+zstd -f file --adapt -c | zstd -t
+
+datagen -g100M > file100M
+
+# Pick parameters to force fast adaptation, even on slow systems
+zstd --adapt -vvvv -19 --zstd=wlog=10 file100M -o /dev/null 2>&1 | grep -q "faster speed , lighter compression"
+
+# Adaption still happens with --no-progress
+zstd --no-progress --adapt -vvvv -19 --zstd=wlog=10 file100M -o /dev/null 2>&1 | grep -q "faster speed , lighter compression"