1 files changed, 160 insertions, 0 deletions
diff --git a/src/boost/libs/histogram/test/axis_variable_test.cpp b/src/boost/libs/histogram/test/axis_variable_test.cpp
new file mode 100644
index 000000000..ea90a5822
--- /dev/null
+++ b/src/boost/libs/histogram/test/axis_variable_test.cpp
@@ -0,0 +1,160 @@
+// Copyright 2015-2017 Hans Dembinski
+//
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE_1_0.txt
+// or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#include <boost/core/lightweight_test.hpp>
+#include <boost/histogram/axis/ostream.hpp>
+#include <boost/histogram/axis/variable.hpp>
+#include <limits>
+#include <sstream>
+#include <type_traits>
+#include <vector>
+#include "is_close.hpp"
+#include "std_ostream.hpp"
+#include "throw_exception.hpp"
+#include "utility_axis.hpp"
+#include "utility_str.hpp"
+
+using namespace boost::histogram;
+
+int main() {
+  BOOST_TEST(std::is_nothrow_move_assignable<axis::variable<>>::value);
+  BOOST_TEST(std::is_nothrow_move_constructible<axis::variable<>>::value);
+
+  // bad_ctors
+  {
+    BOOST_TEST_THROWS(axis::variable<>(std::vector<double>{}), std::invalid_argument);
+    BOOST_TEST_THROWS(axis::variable<>({1.0}), std::invalid_argument);
+    BOOST_TEST_THROWS(axis::variable<>({1.0, 1.0}), std::invalid_argument);
+    BOOST_TEST_THROWS(axis::variable<>({1.0, -1.0}), std::invalid_argument);
+  }
+
+  // axis::variable
+  {
+    axis::variable<> a{{-1, 0, 1}, "foo"};
+    BOOST_TEST_EQ(a.size(), 2);
+    BOOST_TEST_EQ(a.metadata(), "foo");
+    BOOST_TEST_EQ(static_cast<const axis::variable<>&>(a).metadata(), "foo");
+    a.metadata() = "bar";
+    BOOST_TEST_EQ(static_cast<const axis::variable<>&>(a).metadata(), "bar");
+    BOOST_TEST_EQ(a.bin(-1).lower(), -std::numeric_limits<double>::infinity());
+    BOOST_TEST_EQ(a.bin(a.size()).upper(), std::numeric_limits<double>::infinity());
+    BOOST_TEST_EQ(a.value(0), -1);
+    BOOST_TEST_EQ(a.value(0.5), -0.5);
+    BOOST_TEST_EQ(a.value(1), 0);
+    BOOST_TEST_EQ(a.value(1.5), 0.5);
+    BOOST_TEST_EQ(a.value(2), 1);
+    BOOST_TEST_EQ(a.index(-10), -1);
+    BOOST_TEST_EQ(a.index(-1), 0);
+    BOOST_TEST_EQ(a.index(0), 1);
+    BOOST_TEST_EQ(a.index(1), 2);
+    BOOST_TEST_EQ(a.index(10), 2);
+    BOOST_TEST_EQ(a.index(-std::numeric_limits<double>::infinity()), -1);
+    BOOST_TEST_EQ(a.index(std::numeric_limits<double>::infinity()), 2);
+    BOOST_TEST_EQ(a.index(std::numeric_limits<double>::quiet_NaN()), 2);
+
+    BOOST_TEST_EQ(str(a),
+                  "variable(-1, 0, 1, metadata=\"bar\", options=underflow | overflow)");
+
+    axis::variable<> b;
+    BOOST_TEST_NE(a, b);
+    b = a;
+    BOOST_TEST_EQ(a, b);
+    axis::variable<> c = std::move(b);
+    BOOST_TEST_EQ(c, a);
+    axis::variable<> d;
+    BOOST_TEST_NE(c, d);
+    d = std::move(c);
+    BOOST_TEST_EQ(d, a);
+    axis::variable<> e{-2, 0, 2};
+    BOOST_TEST_NE(a, e);
+  }
+
+  // axis::variable circular
+  {
+    axis::variable<double, axis::null_type, axis::option::circular_t> a{-1, 1, 2};
+    BOOST_TEST_EQ(a.value(-2), -4);
+    BOOST_TEST_EQ(a.value(-1), -2);
+    BOOST_TEST_EQ(a.value(0), -1);
+    BOOST_TEST_EQ(a.value(1), 1);
+    BOOST_TEST_EQ(a.value(2), 2);
+    BOOST_TEST_EQ(a.value(3), 4);
+    BOOST_TEST_EQ(a.value(4), 5);
+    BOOST_TEST_EQ(a.index(-3), 0); // -3 + 3 = 0
+    BOOST_TEST_EQ(a.index(-2), 1); // -2 + 3 = 1
+    BOOST_TEST_EQ(a.index(-1), 0);
+    BOOST_TEST_EQ(a.index(0), 0);
+    BOOST_TEST_EQ(a.index(1), 1);
+    BOOST_TEST_EQ(a.index(2), 0);
+    BOOST_TEST_EQ(a.index(3), 0); // 3 - 3 = 0
+    BOOST_TEST_EQ(a.index(4), 1); // 4 - 3 = 1
+  }
+
+  // axis::regular with growth
+  {
+    using pii_t = std::pair<axis::index_type, axis::index_type>;
+    axis::variable<double, axis::null_type, axis::option::growth_t> a{0, 1};
+    BOOST_TEST_EQ(a.size(), 1);
+    BOOST_TEST_EQ(a.update(0), pii_t(0, 0));
+    BOOST_TEST_EQ(a.size(), 1);
+    BOOST_TEST_EQ(a.update(1.1), pii_t(1, -1));
+    BOOST_TEST_EQ(a.size(), 2);
+    BOOST_TEST_EQ(a.value(0), 0);
+    BOOST_TEST_EQ(a.value(1), 1);
+    BOOST_TEST_EQ(a.value(2), 1.5);
+    BOOST_TEST_EQ(a.update(-0.1), pii_t(0, 1));
+    BOOST_TEST_EQ(a.value(0), -0.5);
+    BOOST_TEST_EQ(a.size(), 3);
+    BOOST_TEST_EQ(a.update(10), pii_t(3, -1));
+    BOOST_TEST_EQ(a.size(), 4);
+    BOOST_TEST_IS_CLOSE(a.value(4), 10, 1e-9);
+    BOOST_TEST_EQ(a.update(-10), pii_t(0, 1));
+    BOOST_TEST_EQ(a.size(), 5);
+    BOOST_TEST_IS_CLOSE(a.value(0), -10, 1e-9);
+
+    BOOST_TEST_EQ(a.update(-std::numeric_limits<double>::infinity()), pii_t(-1, 0));
+    BOOST_TEST_EQ(a.update(std::numeric_limits<double>::infinity()), pii_t(a.size(), 0));
+    BOOST_TEST_EQ(a.update(std::numeric_limits<double>::quiet_NaN()), pii_t(a.size(), 0));
+  }
+
+  // iterators
+  {
+    test_axis_iterator(axis::variable<>{1, 2, 3}, 0, 2);
+    test_axis_iterator(
+        axis::variable<double, axis::null_type, axis::option::circular_t>{1, 2, 3}, 0, 2);
+  }
+
+  // shrink and rebin
+  {
+    using A = axis::variable<>;
+    auto a = A({0, 1, 2, 3, 4, 5});
+    auto b = A(a, 1, 4, 1);
+    BOOST_TEST_EQ(b.size(), 3);
+    BOOST_TEST_EQ(b.value(0), 1);
+    BOOST_TEST_EQ(b.value(3), 4);
+    auto c = A(a, 0, 4, 2);
+    BOOST_TEST_EQ(c.size(), 2);
+    BOOST_TEST_EQ(c.value(0), 0);
+    BOOST_TEST_EQ(c.value(2), 4);
+    auto e = A(a, 1, 5, 2);
+    BOOST_TEST_EQ(e.size(), 2);
+    BOOST_TEST_EQ(e.value(0), 1);
+    BOOST_TEST_EQ(e.value(2), 5);
+  }
+
+  // shrink and rebin with circular option
+  {
+    using A = axis::variable<double, axis::null_type, axis::option::circular_t>;
+    auto a = A({1, 2, 3, 4, 5});
+    BOOST_TEST_THROWS(A(a, 1, 4, 1), std::invalid_argument);
+    BOOST_TEST_THROWS(A(a, 0, 3, 1), std::invalid_argument);
+    auto b = A(a, 0, 4, 2);
+    BOOST_TEST_EQ(b.size(), 2);
+    BOOST_TEST_EQ(b.value(0), 1);
+    BOOST_TEST_EQ(b.value(2), 5);
+  }
+
+  return boost::report_errors();
+}