Add unit tests (#6)

Author: markisus

BUILD

@@ -31,3 +31,12 @@ cc_binary(
             "@com_github_google_benchmark//:benchmark_main"],
     copts=COPTS
 )
+
+cc_binary(
+    name = "tests",
+    srcs = ["tests.cc"],
+    deps = [
+        ":soa",
+        "@com_google_googletest//:gtest_main",
+    ],
+    copts=COPTS)

WORKSPACE

@@ -6,3 +6,10 @@ http_archive(
     name = "com_github_google_benchmark",
     url = "https://github.com/google/benchmark/archive/refs/tags/v1.6.1.zip",
     strip_prefix = "benchmark-1.6.1")
+
+http_archive(
+    name = "com_google_googletest",
+    urls = ["https://github.com/google/googletest/archive/609281088cfefc76f9d0ce82e1ff6c30cc3591e5.zip"],
+    strip_prefix = "googletest-609281088cfefc76f9d0ce82e1ff6c30cc3591e5",
+    sha256 = "5cf189eb6847b4f8fc603a3ffff3b0771c08eec7dd4bd961bfd45477dd13eb73"
+)

tests.cc

@@ -0,0 +1,23 @@
+#include <gtest/gtest.h>
+#include <iostream>
+#include "vapid/soa.h"
+
+template <typename T>
+bool is_sorted(const std::vector<T>& l) {
+    for (size_t idx = 1; idx < l.size(); ++idx) {
+        if (l[idx] < l[idx-1]) {
+            return false;
+        }
+    }
+    return true;
+}
+
+TEST(SortA, Sorting) {
+    vapid::soa<int, int> soa;
+    soa.insert(0, 1);
+    soa.insert(2, 5);
+    soa.insert(4, 9);
+    soa.insert(1, 0);
+    soa.sort_by_field<0>();
+    EXPECT_TRUE(is_sorted(soa.get_column<0>()));
+}