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authorArseny Kapoulkine <arseny.kapoulkine@gmail.com>2015-01-16 21:43:28 -0800
committerArseny Kapoulkine <arseny.kapoulkine@gmail.com>2015-01-16 21:43:28 -0800
commitd454013cffe1be5819bfb6329b1aa218b8de618f (patch)
treec80cb40dd0459dfc8b3be333b5c4ff511e062607
parentf9ee391233ed8526597abb3ffa96c4eb8b1c92ad (diff)
tests: Add tests for fp roundtrip
We test min/max and several different mantissas for the entire exponent range for both float and double. It's not clear whether all supported compilers provide an implementation of sprintf/strtod that supports roundtripping so we may need to disable some of these tests in the future.
-rw-r--r--tests/test_dom_modify.cpp84
1 files changed, 73 insertions, 11 deletions
diff --git a/tests/test_dom_modify.cpp b/tests/test_dom_modify.cpp
index 70cba53..1fb9dd3 100644
--- a/tests/test_dom_modify.cpp
+++ b/tests/test_dom_modify.cpp
@@ -2,6 +2,7 @@
#include <limits>
#include <string>
+#include <cmath>
TEST_XML(dom_attr_assign, "<node/>")
{
@@ -99,6 +100,17 @@ TEST_XML(dom_attr_set_value_llong, "<node/>")
}
#endif
+TEST_XML(dom_attr_assign_large_number, "<node attr1='' attr2='' />")
+{
+ xml_node node = doc.child(STR("node"));
+
+ node.attribute(STR("attr1")) = std::numeric_limits<float>::max();
+ node.attribute(STR("attr2")) = std::numeric_limits<double>::max();
+
+ CHECK(test_node(node, STR("<node attr1=\"3.40282347e+038\" attr2=\"1.7976931348623157e+308\" />"), STR(""), pugi::format_raw) ||
+ test_node(node, STR("<node attr1=\"3.40282347e+38\" attr2=\"1.7976931348623157e+308\" />"), STR(""), pugi::format_raw));
+}
+
TEST_XML(dom_node_set_name, "<node>text</node>")
{
CHECK(doc.child(STR("node")).set_name(STR("n")));
@@ -752,17 +764,6 @@ TEST_XML_FLAGS(dom_node_copy_types, "<?xml version='1.0'?><!DOCTYPE id><root><?p
CHECK_NODE(doc, STR("<?xml version=\"1.0\"?><!DOCTYPE id><?xml version=\"1.0\"?><!DOCTYPE id><root><?pi value?><!--comment--><node id=\"1\">pcdata<![CDATA[cdata]]></node></root><root><?pi value?><!--comment--><node id=\"1\">pcdata<![CDATA[cdata]]></node></root>"));
}
-TEST_XML(dom_attr_assign_large_number, "<node attr1='' attr2='' />")
-{
- xml_node node = doc.child(STR("node"));
-
- node.attribute(STR("attr1")) = std::numeric_limits<float>::max();
- node.attribute(STR("attr2")) = std::numeric_limits<double>::max();
-
- CHECK(test_node(node, STR("<node attr1=\"3.40282347e+038\" attr2=\"1.7976931348623157e+308\" />"), STR(""), pugi::format_raw) ||
- test_node(node, STR("<node attr1=\"3.40282347e+38\" attr2=\"1.7976931348623157e+308\" />"), STR(""), pugi::format_raw));
-}
-
TEST(dom_node_declaration_name)
{
xml_document doc;
@@ -1444,3 +1445,64 @@ TEST(dom_node_copy_declaration_empty_name)
CHECK_STRING(decl2.name(), STR(""));
}
+
+TEST(dom_fp_roundtrip_min_max)
+{
+ xml_document doc;
+ xml_node node = doc.append_child(STR("node"));
+ xml_attribute attr = node.append_attribute(STR("attr"));
+
+ node.text().set(std::numeric_limits<float>::min());
+ CHECK(node.text().as_float() == std::numeric_limits<float>::min());
+
+ attr.set_value(std::numeric_limits<float>::max());
+ CHECK(attr.as_float() == std::numeric_limits<float>::max());
+
+ attr.set_value(std::numeric_limits<double>::min());
+ CHECK(attr.as_double() == std::numeric_limits<double>::min());
+
+ node.text().set(std::numeric_limits<double>::max());
+ CHECK(node.text().as_double() == std::numeric_limits<double>::max());
+}
+
+const double fp_roundtrip_base[] =
+{
+ 0.31830988618379067154,
+ 0.43429448190325182765,
+ 0.57721566490153286061,
+ 0.69314718055994530942,
+ 0.70710678118654752440,
+ 0.78539816339744830962,
+};
+
+TEST(dom_fp_roundtrip_float)
+{
+ xml_document doc;
+
+ for (int e = -125; e <= 128; ++e)
+ {
+ for (size_t i = 0; i < sizeof(fp_roundtrip_base) / sizeof(fp_roundtrip_base[0]); ++i)
+ {
+ float value = ldexpf(fp_roundtrip_base[i], e);
+
+ doc.text().set(value);
+ CHECK(doc.text().as_float() == value);
+ }
+ }
+}
+
+TEST(dom_fp_roundtrip_double)
+{
+ xml_document doc;
+
+ for (int e = -1021; e <= 1024; ++e)
+ {
+ for (size_t i = 0; i < sizeof(fp_roundtrip_base) / sizeof(fp_roundtrip_base[0]); ++i)
+ {
+ double value = ldexp(fp_roundtrip_base[i], e);
+
+ doc.text().set(value);
+ CHECK(doc.text().as_double() == value);
+ }
+ }
+}