diff --git a/tools/versioner/tests/preprocessor/expected/foo.h b/tools/versioner/tests/preprocessor/expected/foo.h
new file mode 100644
index 0000000..3e05a1e
--- /dev/null
+++ b/tools/versioner/tests/preprocessor/expected/foo.h
@@ -0,0 +1,50 @@
+int always_available();
+
+int also_always_available() __INTRODUCED_IN(9);
+
+
+#if __ANDROID_API__ >= 10
+int needs_guard() __INTRODUCED_IN(10);
+#endif /* __ANDROID_API__ >= 10 */
+
+
+#if __ANDROID_API__ >= 10
+int already_guarded() __INTRODUCED_IN(10);
+#endif
+
+#if defined(__arm__)
+
+#if __ANDROID_API__ >= 11
+int specific_arch() __INTRODUCED_IN(11);
+#endif /* __ANDROID_API__ >= 11 */
+
+#endif
+
+#if defined(__arm__) || defined(__i386__)
+
+#if __ANDROID_API__ >= 11
+int multiple_archs() __INTRODUCED_IN(11);
+#endif /* __ANDROID_API__ >= 11 */
+
+#endif
+
+// __INTRODUCED_IN_64(21) should be ignored.
+
+#if (defined(__LP64__)) || (defined(__arm__) && __ANDROID_API__ >= 10) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 11) || (defined(__i386__) && __ANDROID_API__ >= 10)
+int multiple_introduced_1() __INTRODUCED_IN_ARM(10) __INTRODUCED_IN_MIPS(11) __INTRODUCED_IN_X86(10)
+    __INTRODUCED_IN_64(21);
+#endif /* (defined(__LP64__)) || (defined(__arm__) && __ANDROID_API__ >= 10) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 11) || (defined(__i386__) && __ANDROID_API__ >= 10) */
+
+
+
+#if (defined(__LP64__) && __ANDROID_API__ >= 22) || (defined(__arm__) && __ANDROID_API__ >= 10) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 11) || (defined(__i386__) && __ANDROID_API__ >= 10)
+int multiple_introduced_2() __INTRODUCED_IN_ARM(10) __INTRODUCED_IN_MIPS(11) __INTRODUCED_IN_X86(10)
+    __INTRODUCED_IN_64(22);
+#endif /* (defined(__LP64__) && __ANDROID_API__ >= 22) || (defined(__arm__) && __ANDROID_API__ >= 10) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 11) || (defined(__i386__) && __ANDROID_API__ >= 10) */
+
+
+
+#if (!defined(__LP64__) && __ANDROID_API__ >= 12) || (defined(__LP64__))
+int group_lp32() __INTRODUCED_IN_ARM(12) __INTRODUCED_IN_X86(12) __INTRODUCED_IN_MIPS(12);
+#endif /* (!defined(__LP64__) && __ANDROID_API__ >= 12) || (defined(__LP64__)) */
+
diff --git a/tools/versioner/tests/preprocessor/headers/foo.h b/tools/versioner/tests/preprocessor/headers/foo.h
new file mode 100644
index 0000000..ae5b847
--- /dev/null
+++ b/tools/versioner/tests/preprocessor/headers/foo.h
@@ -0,0 +1,26 @@
+int always_available();
+
+int also_always_available() __INTRODUCED_IN(9);
+
+int needs_guard() __INTRODUCED_IN(10);
+
+#if __ANDROID_API__ >= 10
+int already_guarded() __INTRODUCED_IN(10);
+#endif
+
+#if defined(__arm__)
+int specific_arch() __INTRODUCED_IN(11);
+#endif
+
+#if defined(__arm__) || defined(__i386__)
+int multiple_archs() __INTRODUCED_IN(11);
+#endif
+
+// __INTRODUCED_IN_64(21) should be ignored.
+int multiple_introduced_1() __INTRODUCED_IN_ARM(10) __INTRODUCED_IN_MIPS(11) __INTRODUCED_IN_X86(10)
+    __INTRODUCED_IN_64(21);
+
+int multiple_introduced_2() __INTRODUCED_IN_ARM(10) __INTRODUCED_IN_MIPS(11) __INTRODUCED_IN_X86(10)
+    __INTRODUCED_IN_64(22);
+
+int group_lp32() __INTRODUCED_IN_ARM(12) __INTRODUCED_IN_X86(12) __INTRODUCED_IN_MIPS(12);
diff --git a/tools/versioner/tests/preprocessor/out/foo.h b/tools/versioner/tests/preprocessor/out/foo.h
new file mode 100644
index 0000000..3e05a1e
--- /dev/null
+++ b/tools/versioner/tests/preprocessor/out/foo.h
@@ -0,0 +1,50 @@
+int always_available();
+
+int also_always_available() __INTRODUCED_IN(9);
+
+
+#if __ANDROID_API__ >= 10
+int needs_guard() __INTRODUCED_IN(10);
+#endif /* __ANDROID_API__ >= 10 */
+
+
+#if __ANDROID_API__ >= 10
+int already_guarded() __INTRODUCED_IN(10);
+#endif
+
+#if defined(__arm__)
+
+#if __ANDROID_API__ >= 11
+int specific_arch() __INTRODUCED_IN(11);
+#endif /* __ANDROID_API__ >= 11 */
+
+#endif
+
+#if defined(__arm__) || defined(__i386__)
+
+#if __ANDROID_API__ >= 11
+int multiple_archs() __INTRODUCED_IN(11);
+#endif /* __ANDROID_API__ >= 11 */
+
+#endif
+
+// __INTRODUCED_IN_64(21) should be ignored.
+
+#if (defined(__LP64__)) || (defined(__arm__) && __ANDROID_API__ >= 10) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 11) || (defined(__i386__) && __ANDROID_API__ >= 10)
+int multiple_introduced_1() __INTRODUCED_IN_ARM(10) __INTRODUCED_IN_MIPS(11) __INTRODUCED_IN_X86(10)
+    __INTRODUCED_IN_64(21);
+#endif /* (defined(__LP64__)) || (defined(__arm__) && __ANDROID_API__ >= 10) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 11) || (defined(__i386__) && __ANDROID_API__ >= 10) */
+
+
+
+#if (defined(__LP64__) && __ANDROID_API__ >= 22) || (defined(__arm__) && __ANDROID_API__ >= 10) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 11) || (defined(__i386__) && __ANDROID_API__ >= 10)
+int multiple_introduced_2() __INTRODUCED_IN_ARM(10) __INTRODUCED_IN_MIPS(11) __INTRODUCED_IN_X86(10)
+    __INTRODUCED_IN_64(22);
+#endif /* (defined(__LP64__) && __ANDROID_API__ >= 22) || (defined(__arm__) && __ANDROID_API__ >= 10) || (defined(__mips__) && !defined(__LP64__) && __ANDROID_API__ >= 11) || (defined(__i386__) && __ANDROID_API__ >= 10) */
+
+
+
+#if (!defined(__LP64__) && __ANDROID_API__ >= 12) || (defined(__LP64__))
+int group_lp32() __INTRODUCED_IN_ARM(12) __INTRODUCED_IN_X86(12) __INTRODUCED_IN_MIPS(12);
+#endif /* (!defined(__LP64__) && __ANDROID_API__ >= 12) || (defined(__LP64__)) */
+
diff --git a/tools/versioner/tests/preprocessor/platforms/android-9/arch-arm/symbols/libc.so.functions.txt b/tools/versioner/tests/preprocessor/platforms/android-9/arch-arm/symbols/libc.so.functions.txt
new file mode 100644
index 0000000..257cc56
--- /dev/null
+++ b/tools/versioner/tests/preprocessor/platforms/android-9/arch-arm/symbols/libc.so.functions.txt
@@ -0,0 +1 @@
+foo
diff --git a/tools/versioner/tests/preprocessor/run.sh b/tools/versioner/tests/preprocessor/run.sh
new file mode 100644
index 0000000..1b0aae2
--- /dev/null
+++ b/tools/versioner/tests/preprocessor/run.sh
@@ -0,0 +1,4 @@
+rm -rf out
+set -e
+versioner headers -i -o out
+diff -q -w -B out expected