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-rw-r--r--js/src/gdb/tests/test-jsval.py23
1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/gdb/tests/test-jsval.py b/js/src/gdb/tests/test-jsval.py
new file mode 100644
index 0000000000..e5a42e72f4
--- /dev/null
+++ b/js/src/gdb/tests/test-jsval.py
@@ -0,0 +1,23 @@
+# Basic unit tests for jsval pretty-printer.
+# flake8: noqa: F821
+
+assert_subprinter_registered("SpiderMonkey", "JS::Value")
+
+run_fragment("jsval.simple")
+
+assert_pretty("fortytwo", "$JS::Int32Value(42)")
+assert_pretty("fortytwoD", "$JS::DoubleValue(42.0)")
+assert_pretty("negone", "$JS::Int32Value(-1)")
+assert_pretty("undefined", "$JS::UndefinedValue()")
+assert_pretty("null", "$JS::NullValue()")
+assert_pretty("js_true", "$JS::BooleanValue(true)")
+assert_pretty("js_false", "$JS::BooleanValue(false)")
+assert_pretty("elements_hole", "$JS::MagicValue(JS_ELEMENTS_HOLE)")
+assert_pretty("empty_string", '$JS::Value("")')
+assert_pretty("friendly_string", '$JS::Value("Hello!")')
+assert_pretty("symbol", '$JS::Value(Symbol.for("Hello!"))')
+assert_pretty("bi", "$JS::BigIntValue()")
+assert_pretty("global", "$JS::Value((JSObject *) [object global])")
+assert_pretty(
+ "onehundredthirtysevenonehundredtwentyeighths", "$JS::DoubleValue(1.0703125)"
+)