test(test_suite): added more float test cases

1 files changed, 23 insertions, 0 deletions

diff --git a/test/test_suite.cpp b/test/test_suite.cpp
index dc15321..9a6cf07 100644
--- a/test/test_suite.cpp
+++ b/test/test_suite.cpp
@@ -31,6 +31,7 @@
 #include "catch.hpp"

 

 #include <string.h>

+#include <sstream>

 #include <math.h>

 

 namespace test {

@@ -1189,6 +1190,28 @@ TEST_CASE("float", "[]" ) {
   // out of range for float: should switch to exp notation

   test::sprintf(buffer, "%.1f", 1E20);

   REQUIRE(!strcmp(buffer, "1.0e+20"));

+

+  // brute force float

+  bool fail = false;

+  std::stringstream str;

+  str.precision(5);

+  for (float i = -100000; i < 100000; i += 1) {

+    test::sprintf(buffer, "%.5f", i / 10000);

+    str.str("");

+    str << std::fixed << i / 10000;

+    fail = fail || !!strcmp(buffer, str.str().c_str());

+  }

+  REQUIRE(!fail);

+

+  // brute force exp

+  str.setf(std::ios::scientific, std::ios::floatfield);

+  for (float i = -1e20; i < 1e20; i += 1e15) {

+    test::sprintf(buffer, "%.5f", i);

+    str.str("");

+    str << i;

+    fail = fail || !!strcmp(buffer, str.str().c_str());

+  }

+  REQUIRE(!fail);

 }