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75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
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#include <gtest/gtest.h>
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#include "trick/units_conv.h"
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#define TOL 1e-7
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/*
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double tolerance(int exp)
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{
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return pow(10, exp);
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}
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*/
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/*********************WARNING******************************************
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* 1. new_units allocates memory for a Units_t object using new
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* Use clean_up_Units_t() to deallocate the memory and set the pointer to NULL
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*
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* 2. Do not call clean_up_Units_t() on unitialized pointers!
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* Initialize/Define pointers at declaration
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* Declared pointers that don't point to a valid address or NULL will
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* cause an error
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**********************************************************************/
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void clean_up_Units_t(Units_t** ptr)
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{
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if(*ptr != (Units_t*) NULL)
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{
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delete *ptr;
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}
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else
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{
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std::cerr << "WARNING: Call to clean_up_Units_t() on a NULL pointer" << std::endl
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<< "Calling function should check for non-NULL value of pointer" << std::endl
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<< "before calling clean_up_Units_t()" << std::endl;
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}
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*ptr = (Units_t*) NULL;
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}
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TEST(UnitsInterface, BogusUnit)
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{
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Units_t *Bogus = (Units_t*) NULL;
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std::cerr << "The purpose of this test is to throw to an exception. Error messages are expected." << std::endl;
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ASSERT_EQ((Units_t*) NULL, Bogus = new_units("foo"));
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}
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TEST(UnitsInterface, Newton_to_Pound)
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{
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UnitsConvFn_t Newton_to_Pound;
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UnitsConvFn_t Newton_to_Pound2;
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Units_t* Newton = (Units_t*) NULL;
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Units_t* Pound = (Units_t*) NULL;
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double pounds;
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ASSERT_EQ(CONV_OK, conv_fn_s("kg*m/s2", "lbm*ft/s2", &Newton_to_Pound));
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Newton = new_units("kg*m/s2");
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Pound = new_units("lbm*ft/s2");
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ASSERT_NE((Units_t*) NULL, Newton);
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ASSERT_NE((Units_t*) NULL, Pound);
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ASSERT_EQ(CONV_OK, conv_fn_u(Newton, Pound, &Newton_to_Pound2));
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EXPECT_EQ(0, memcmp(&Newton_to_Pound, &Newton_to_Pound2, sizeof(UnitsConvFn_t)));
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pounds = convert_units(1.0, &Newton_to_Pound);
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ASSERT_NEAR((1.0/(0.45359237*0.3048)), pounds, TOL);
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clean_up_Units_t(&Newton);
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clean_up_Units_t(&Pound);
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ASSERT_EQ((Units_t*) NULL, Newton);
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ASSERT_EQ((Units_t*) NULL, Pound);
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}
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