From f5d105b34d25f3b152001c097b7311c3093f8a46 Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Wed, 18 Sep 2024 22:57:42 -0600
Subject: [PATCH] qvec: allow gtest to print

---
 include/common/qvec.hh |  6 ++++++
 tests/test_light.cc    | 14 ++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/include/common/qvec.hh b/include/common/qvec.hh
index c4f72fc1..33f3ee67 100644
--- a/include/common/qvec.hh
+++ b/include/common/qvec.hh
@@ -296,6 +296,12 @@ public:
     constexpr auto end() const { return v.end(); }
     constexpr auto cbegin() const { return v.cbegin(); }
     constexpr auto cend() const { return v.cend(); }
+
+    // gtest support
+    friend std::ostream& operator<<(std::ostream& os, const qvec& point) {
+        os << fmt::format("{}", point);
+        return os;
+    }
 };
 
 // Fmt support
diff --git a/tests/test_light.cc b/tests/test_light.cc
index a8b742e9..ed3995df 100644
--- a/tests/test_light.cc
+++ b/tests/test_light.cc
@@ -717,6 +717,20 @@ TEST(mathlib, qvecConstructorExtra)
     EXPECT_EQ(2, test[1]);
 }
 
+TEST(mathlib, qvecGTestPrint)
+{
+    const qvec2f test(1, 2);
+
+    EXPECT_EQ(testing::PrintToString(test), "1 2");
+}
+
+TEST(mathlib, qvecFmtFormat)
+{
+    const qvec2f test(1, 2);
+
+    EXPECT_EQ("1 2", fmt::format("{}", test));
+}
+
 // aabb3f
 
 TEST(mathlib, aabbBasic)