1 files changed, 125 insertions, 0 deletions
diff --git a/src/lib/util/tests/triplet_unittest.cc b/src/lib/util/tests/triplet_unittest.cc
new file mode 100644
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+++ b/src/lib/util/tests/triplet_unittest.cc
@@ -0,0 +1,125 @@
+// Copyright (C) 2012-2021 Internet Systems Consortium, Inc. ("ISC")
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+#include <config.h>
+
+#include <util/triplet.h>
+#include <exceptions/exceptions.h>
+
+#include <gtest/gtest.h>
+
+#include <stdint.h>
+
+using namespace isc::util;
+using namespace isc;
+
+namespace {
+
+// constructor validation
+TEST(TripletTest, constructor) {
+
+    const uint32_t min = 10;
+    const uint32_t value = 20;
+    const uint32_t max = 30;
+
+    Triplet<uint32_t> x(min, value, max);
+
+    EXPECT_EQ(min, x.getMin());
+    EXPECT_EQ(value, x.get());
+    EXPECT_EQ(max, x.getMax());
+    EXPECT_FALSE(x.unspecified());
+
+    // requested values below min should return allowed min value
+    EXPECT_EQ(min, x.get(min - 5));
+
+    EXPECT_EQ(min, x.get(min));
+
+    // requesting a value from within the range (min < x < max) should
+    // return the requested value
+    EXPECT_EQ(17, x.get(17));
+
+    EXPECT_EQ(max, x.get(max));
+
+    EXPECT_EQ(max, x.get(max + 5));
+
+    // this will be boring. It is expected to return 42 no matter what
+    Triplet<uint32_t> y(42);
+
+    EXPECT_EQ(42, y.getMin()); // min, default and max are equal to 42
+    EXPECT_EQ(42, y.get());    // it returns ...
+    EXPECT_EQ(42, y.getMax()); // the exact value...
+    EXPECT_FALSE(x.unspecified());
+
+    // requested values below or above are ignore
+    EXPECT_EQ(42, y.get(5));   // all...
+    EXPECT_EQ(42, y.get(42));  // the...
+    EXPECT_EQ(42, y.get(80));  // time!
+}
+
+TEST(TripletTest, unspecified) {
+    Triplet<uint32_t> x;
+    // When using the constructor without parameters, the triplet
+    // value is unspecified.
+    EXPECT_EQ(0, x.getMin());
+    EXPECT_EQ(0, x.get());
+    EXPECT_EQ(0, x.getMax());
+    EXPECT_TRUE(x.unspecified());
+
+    // For the triplet which has unspecified value we can call accessors
+    // without an exception.
+    uint32_t exp_unspec = 0;
+    EXPECT_EQ(exp_unspec, x);
+
+    x = 72;
+    // Check if the new value has been assigned.
+    EXPECT_EQ(72, x.getMin());
+    EXPECT_EQ(72, x.get());
+    EXPECT_EQ(72, x.getMax());
+    // Triplet is now specified.
+    EXPECT_FALSE(x.unspecified());
+}
+
+// Triplets must be easy to use.
+// Simple to/from int conversions must be done on the fly.
+TEST(TripletTest, operator) {
+
+    uint32_t x = 47;
+
+    Triplet<uint32_t> foo(1,2,3);
+    Triplet<uint32_t> bar(4,5,6);
+
+    foo = bar;
+
+    EXPECT_EQ(4, foo.getMin());
+    EXPECT_EQ(5, foo.get());
+    EXPECT_EQ(6, foo.getMax());
+    EXPECT_FALSE(foo.unspecified());
+
+    // assignment operator: uint32_t => triplet
+    Triplet<uint32_t> y(0);
+    y = x;
+
+    EXPECT_EQ(x, y.get());
+
+    // let's try the other way around: triplet => uint32_t
+    uint32_t z = 0;
+    z = y;
+
+    EXPECT_EQ(x, z);
+}
+
+// check if specified values are sane
+TEST(TripletTest, sanityCheck) {
+
+    // min is larger than default
+    EXPECT_THROW(Triplet<uint32_t>(6,5,5), BadValue);
+
+    // max is smaller than default
+    EXPECT_THROW(Triplet<uint32_t>(5,5,4), BadValue);
+
+}
+
+}; // end of anonymous namespace