diff --git a/tools/versioner/tests/version_mismatch/expected_fail b/tools/versioner/tests/version_mismatch/expected_fail
new file mode 100644
index 0000000..7f0709c
--- /dev/null
+++ b/tools/versioner/tests/version_mismatch/expected_fail
@@ -0,0 +1,2 @@
+foo: availability mismatch between arm-9 and arm-12: [introduced = 9] before, [introduced = 10] after
+versioner: sanity check failed
diff --git a/tools/versioner/tests/version_mismatch/headers/foo.h b/tools/versioner/tests/version_mismatch/headers/foo.h
new file mode 100644
index 0000000..4d23417
--- /dev/null
+++ b/tools/versioner/tests/version_mismatch/headers/foo.h
@@ -0,0 +1,5 @@
+#if __ANDROID_API__ <= 9
+int foo() __attribute__((availability(android, introduced = 9)));
+#else
+int foo() __attribute__((availability(android, introduced = 10)));
+#endif
diff --git a/tools/versioner/tests/version_mismatch/platforms/android-12/arch-arm/symbols/libc.so.functions.txt b/tools/versioner/tests/version_mismatch/platforms/android-12/arch-arm/symbols/libc.so.functions.txt
new file mode 100644
index 0000000..257cc56
--- /dev/null
+++ b/tools/versioner/tests/version_mismatch/platforms/android-12/arch-arm/symbols/libc.so.functions.txt
@@ -0,0 +1 @@
+foo
diff --git a/tools/versioner/tests/version_mismatch/platforms/android-9/arch-arm/symbols/libc.so.functions.txt b/tools/versioner/tests/version_mismatch/platforms/android-9/arch-arm/symbols/libc.so.functions.txt
new file mode 100644
index 0000000..257cc56
--- /dev/null
+++ b/tools/versioner/tests/version_mismatch/platforms/android-9/arch-arm/symbols/libc.so.functions.txt
@@ -0,0 +1 @@
+foo
diff --git a/tools/versioner/tests/version_mismatch/run.sh b/tools/versioner/tests/version_mismatch/run.sh
new file mode 100644
index 0000000..914c55d
--- /dev/null
+++ b/tools/versioner/tests/version_mismatch/run.sh
@@ -0,0 +1 @@
+versioner headers -p platforms -r arm -a 9 -a 12