hidl_test: move duplicated code to shared lib

Test: hidl_test

Change-Id: Ia68b78d44d68a6b254c686afe64faf7cc89510d7
diff --git a/tests/foo/1.0/default/lib/Android.bp b/tests/foo/1.0/default/lib/Android.bp
new file mode 100644
index 0000000..c7ad57e
--- /dev/null
+++ b/tests/foo/1.0/default/lib/Android.bp
@@ -0,0 +1,15 @@
+cc_library_shared {
+    name: "libfootest",
+    srcs: [
+        "FooHelper.cpp"
+    ],
+
+    shared_libs: [
+        "libhidl",
+        "libhwbinder",
+        "android.hardware.tests.foo@1.0",
+    ],
+    local_include_dirs: ["include/hidl-test"],
+    export_include_dirs: ["include"],
+
+}
diff --git a/tests/foo/1.0/default/lib/FooHelper.cpp b/tests/foo/1.0/default/lib/FooHelper.cpp
new file mode 100644
index 0000000..8c5ff94
--- /dev/null
+++ b/tests/foo/1.0/default/lib/FooHelper.cpp
@@ -0,0 +1,57 @@
+#include "FooHelper.h"
+
+namespace android {
+
+std::string to_string(const IFoo::StringMatrix5x3 &M) {
+    return to_string(M.s);
+}
+
+std::string to_string(const IFoo::StringMatrix3x5 &M) {
+    return to_string(M.s);
+}
+
+std::string to_string(const hidl_string &s) {
+    return std::string("'") + s.c_str() + "'";
+}
+
+std::string QuuxToString(const IFoo::Quux &val) {
+    std::string s;
+
+    s = "Quux(first='";
+    s += val.first.c_str();
+    s += "', last='";
+    s += val.last.c_str();
+    s += "')";
+
+    return s;
+}
+
+std::string MultiDimensionalToString(const IFoo::MultiDimensional &val) {
+    std::string s;
+
+    s += "MultiDimensional(";
+
+    s += "quuxMatrix=[";
+
+    size_t k = 0;
+    for (size_t i = 0; i < 5; ++i) {
+        if (i > 0) {
+            s += ", ";
+        }
+
+        s += "[";
+        for (size_t j = 0; j < 3; ++j, ++k) {
+            if (j > 0) {
+                s += ", ";
+            }
+
+            s += QuuxToString(val.quuxMatrix[i][j]);
+        }
+    }
+    s += "]";
+
+    s += ")";
+
+    return s;
+}
+} // namespace android
diff --git a/tests/foo/1.0/default/lib/include/hidl-test/FooHelper.h b/tests/foo/1.0/default/lib/include/hidl-test/FooHelper.h
new file mode 100644
index 0000000..09b0557
--- /dev/null
+++ b/tests/foo/1.0/default/lib/include/hidl-test/FooHelper.h
@@ -0,0 +1,79 @@
+#ifndef ANDROID_HIDL_TEST_FOO_HELPER_H
+#define ANDROID_HIDL_TEST_FOO_HELPER_H
+#include <string>
+#include <android/hardware/tests/foo/1.0/IFoo.h>
+#include <utils/Timers.h>
+
+namespace android {
+
+using std::to_string;
+using hardware::hidl_string;
+using hardware::hidl_vec;
+using hardware::hidl_array;
+using hardware::tests::foo::V1_0::IFoo;
+
+static constexpr nsecs_t DELAY_S = 1;
+static constexpr nsecs_t DELAY_NS = seconds_to_nanoseconds(DELAY_S);
+static constexpr nsecs_t TOLERANCE_NS = milliseconds_to_nanoseconds(10);
+static constexpr nsecs_t ONEWAY_TOLERANCE_NS = milliseconds_to_nanoseconds(1);
+
+std::string to_string(const IFoo::StringMatrix5x3 &M);
+std::string to_string(const IFoo::StringMatrix3x5 &M);
+// Add quotes around s. For testing purposes only.
+std::string to_string(const hidl_string &s);
+
+template<typename T>
+std::string to_string(const T *elems, size_t n) {
+    std::string out;
+    out = "[";
+    for (size_t i = 0; i < n; ++i) {
+        if (i > 0) {
+            out += ", ";
+        }
+        out += to_string(elems[i]);
+    }
+    out += "]";
+
+    return out;
+}
+
+template<typename T, size_t SIZE>
+std::string to_string(const hidl_array<T, SIZE> &array) {
+    return to_string(&array[0], SIZE);
+}
+
+template<typename T, size_t SIZE1, size_t SIZE2>
+std::string to_string(const hidl_array<T, SIZE1, SIZE2> &array) {
+    std::string out;
+    out = "[";
+    for (size_t i = 0; i < SIZE1; ++i) {
+        if (i > 0) {
+            out += ", ";
+        }
+
+        out += "[";
+        for (size_t j = 0; j < SIZE2; ++j) {
+            if (j > 0) {
+                out += ", ";
+            }
+
+            out += to_string(array[i][j]);
+        }
+        out += "]";
+    }
+    out += "]";
+
+    return out;
+}
+
+template<typename T>
+std::string to_string(const hidl_vec<T> &vec) {
+    return to_string(&vec[0], vec.size());
+}
+
+std::string QuuxToString(const IFoo::Quux &val);
+
+std::string MultiDimensionalToString(const IFoo::MultiDimensional &val);
+
+} // namespace android
+#endif // ANDROID_HIDL_TEST_TEST_HELPER_H