1 files changed, 3 insertions, 1 deletions
diff --git a/tests/drivers/hover_values_test.js b/tests/drivers/hover_values_test.js
index badc2ed..0f09cfc 100644
--- a/tests/drivers/hover_values_test.js
+++ b/tests/drivers/hover_values_test.js
@@ -1,4 +1,6 @@
 // value previews follow the compiler's bindings and the position of each use.
+// interpreted hosts (no jit) are far slower; ZC_TEST_TIMEOUT_SCALE stretches every deadline
+const TIMEOUT_SCALE = Number(process.env.ZC_TEST_TIMEOUT_SCALE) || 1;
 const assert = require('assert');
 const cp = require('child_process');
 const server = process.argv[2];
@@ -17,7 +19,7 @@ function hover(text, needle, nth = 0) {
         const body = Buffer.from(JSON.stringify(m));
         return Buffer.concat([Buffer.from('Content-Length: ' + body.length + '\r\n\r\n'), body]);
     }));
-    const result = cp.spawnSync(server, process.argv.slice(3), { input, timeout: 20000, maxBuffer: 8 << 20 });
+    const result = cp.spawnSync(server, process.argv.slice(3), { input, timeout: 20000 * TIMEOUT_SCALE, maxBuffer: 8 << 20 });
     assert.strictEqual(result.status, 0, String(result.stderr));
     let data = result.stdout;
     while (data.length) {