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-rw-r--r--docs/markdown/Unit-tests.md4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/markdown/Unit-tests.md b/docs/markdown/Unit-tests.md
index b5d3a1b81..898366095 100644
--- a/docs/markdown/Unit-tests.md
+++ b/docs/markdown/Unit-tests.md
@@ -89,6 +89,10 @@ variable `MESON_TESTTHREADS` like this.
$ MESON_TESTTHREADS=5 meson test
```
+Setting `MESON_TESTTHREADS` to 0 enables the default behavior (core
+count), whereas setting an invalid value results in setting the job
+count to 1.
+
## Priorities
*(added in version 0.52.0)*