#include <cxxtest/TestSuite.h>

#include "svg/svg-length.h"

#include <glib.h>

#include <utility>

gchar const *sp_svg_length_get_css_units(SVGLength::Unit unit);

class SvgLengthTest : public CxxTest::TestSuite

{

private:

struct test_t {

char const* str; SVGLength::Unit unit; float value; float computed;

};

struct testd_t {

char const* str; double val; int prec; int minexp;

};

static test_t const absolute_tests[12];

static test_t const relative_tests[3];

static char const * fail_tests[8];

public:

SvgLengthTest() {

}

static SvgLengthTest *createSuite() { return new SvgLengthTest(); }

static void destroySuite( SvgLengthTest *suite ) { delete suite; }

void testRead()

{

for(size_t i=0; i<G_N_ELEMENTS(absolute_tests); i++) {

SVGLength len;

TSM_ASSERT(absolute_tests[i].str , len.read(absolute_tests[i].str));

TSM_ASSERT_EQUALS(absolute_tests[i].str , len.unit , absolute_tests[i].unit);

TSM_ASSERT_EQUALS(absolute_tests[i].str , len.value , absolute_tests[i].value);

TSM_ASSERT_EQUALS(absolute_tests[i].str , len.computed , absolute_tests[i].computed);

}

for(size_t i=0; i<G_N_ELEMENTS(relative_tests); i++) {

SVGLength len;

TSM_ASSERT(relative_tests[i].str , len.read(relative_tests[i].str));

len.update(7,13,19);

TSM_ASSERT_EQUALS(relative_tests[i].str , len.unit , relative_tests[i].unit);

TSM_ASSERT_EQUALS(relative_tests[i].str , len.value , relative_tests[i].value);

TSM_ASSERT_EQUALS(relative_tests[i].str , len.computed , relative_tests[i].computed);

}

for(size_t i=0; i<G_N_ELEMENTS(fail_tests); i++) {

SVGLength len;

TSM_ASSERT(fail_tests[i] , !len.read(fail_tests[i]));

}

}

void testReadOrUnset()

{

for(size_t i=0; i<G_N_ELEMENTS(absolute_tests); i++) {

SVGLength len;

len.readOrUnset(absolute_tests[i].str);

TSM_ASSERT_EQUALS(absolute_tests[i].str , len.unit , absolute_tests[i].unit);

TSM_ASSERT_EQUALS(absolute_tests[i].str , len.value , absolute_tests[i].value);

TSM_ASSERT_EQUALS(absolute_tests[i].str , len.computed , absolute_tests[i].computed);

}

for(size_t i=0; i<G_N_ELEMENTS(relative_tests); i++) {

SVGLength len;

len.readOrUnset(relative_tests[i].str);

len.update(7,13,19);

TSM_ASSERT_EQUALS(relative_tests[i].str , len.unit , relative_tests[i].unit);

TSM_ASSERT_EQUALS(relative_tests[i].str , len.value , relative_tests[i].value);

TSM_ASSERT_EQUALS(relative_tests[i].str , len.computed , relative_tests[i].computed);

}

for(size_t i=0; i<G_N_ELEMENTS(fail_tests); i++) {

SVGLength len;

len.readOrUnset(fail_tests[i], SVGLength::INCH, 123, 456);

TSM_ASSERT_EQUALS(fail_tests[i] , len.unit , SVGLength::INCH);

TSM_ASSERT_EQUALS(fail_tests[i] , len.value , 123);

TSM_ASSERT_EQUALS(fail_tests[i] , len.computed , 456);

}

}

void testReadAbsolute()

{

for(size_t i=0; i<G_N_ELEMENTS(absolute_tests); i++) {

SVGLength len;

TSM_ASSERT(absolute_tests[i].str , len.readAbsolute(absolute_tests[i].str));

TSM_ASSERT_EQUALS(absolute_tests[i].str , len.unit , absolute_tests[i].unit);

TSM_ASSERT_EQUALS(absolute_tests[i].str , len.value , absolute_tests[i].value);

TSM_ASSERT_EQUALS(absolute_tests[i].str , len.computed , absolute_tests[i].computed);

}

for(size_t i=0; i<G_N_ELEMENTS(relative_tests); i++) {

SVGLength len;

TSM_ASSERT(relative_tests[i].str , !len.readAbsolute(relative_tests[i].str));

}

for(size_t i=0; i<G_N_ELEMENTS(fail_tests); i++) {

SVGLength len;

TSM_ASSERT(fail_tests[i] , !len.readAbsolute(fail_tests[i]));

}

}

void testEnumMappedToString()

{

for ( int i = (static_cast<int>(SVGLength::NONE) + 1); i <= static_cast<int>(SVGLength::LAST_UNIT); i++ ) {

SVGLength::Unit target = static_cast<SVGLength::Unit>(i);

// PX is a special case where we don't have a unit string

if ( (target != SVGLength::PX) ) {

gchar const* val = sp_svg_length_get_css_units(target);

TSM_ASSERT_DIFFERS(i, val, "");

}

}

}

// Ensure that all unit suffix strings used are allowed by SVG

void testStringsAreValidSVG()

{

gchar const* valid[] = {"", "em", "ex", "px", "pt", "pc", "cm", "mm", "in", "%"};

std::set<std::string> validStrings(valid, valid + G_N_ELEMENTS(valid));

for ( int i = (static_cast<int>(SVGLength::NONE) + 1); i <= static_cast<int>(SVGLength::LAST_UNIT); i++ ) {

SVGLength::Unit target = static_cast<SVGLength::Unit>(i);

gchar const* val = sp_svg_length_get_css_units(target);

TSM_ASSERT(i, validStrings.find(std::string(val)) != validStrings.end());

}

}

// Ensure that all unit suffix strings allowed by SVG are covered by enum

void testValidSVGStringsSupported()

{

// Note that "px" is ommitted from the list, as it will be assumed to be so if not explicitly set.

gchar const* valid[] = {"em", "ex", "pt", "pc", "cm", "mm", "in", "%"};

std::set<std::string> validStrings(valid, valid + G_N_ELEMENTS(valid));

for ( int i = (static_cast<int>(SVGLength::NONE) + 1); i <= static_cast<int>(SVGLength::LAST_UNIT); i++ ) {

SVGLength::Unit target = static_cast<SVGLength::Unit>(i);

gchar const* val = sp_svg_length_get_css_units(target);

std::set<std::string>::iterator iter = validStrings.find(std::string(val));

if (iter != validStrings.end()) {

validStrings.erase(iter);

}

}

TSM_ASSERT_EQUALS(validStrings, validStrings.size(), 0u);

}

void testPlaces()

{

testd_t const precTests[] = {

{"760", 761.92918978947023, 2, -8},

{"761.9", 761.92918978947023, 4, -8},

};

for ( size_t i = 0; i < G_N_ELEMENTS(precTests); i++ ) {

char buf[256] = {0};

memset(buf, 0xCC, sizeof(buf)); // Make it easy to detect an overrun.

unsigned int retval = sp_svg_number_write_de( buf, sizeof(buf), precTests[i].val, precTests[i].prec, precTests[i].minexp );

TSM_ASSERT_EQUALS("Number of chars written", retval, strlen(precTests[i].str));

TSM_ASSERT_EQUALS("Numeric string written", std::string(buf), std::string(precTests[i].str));

TSM_ASSERT_EQUALS(std::string("Buffer overrun ") + precTests[i].str, '\xCC', buf[retval + 1]);

}

}

// TODO: More tests

};

SvgLengthTest::test_t const SvgLengthTest::absolute_tests[12] = {

{"0", SVGLength::NONE, 0 , 0},

{"1", SVGLength::NONE, 1 , 1},

{"1.00001", SVGLength::NONE, 1.00001 , 1.00001},

{"1px", SVGLength::PX , 1 , 1},

{".1px", SVGLength::PX , 0.1 , 0.1},

{"100pt", SVGLength::PT , 100 , 400.0/3.0},

{"1e2pt", SVGLength::PT , 100 , 400.0/3.0},

{"3pc", SVGLength::PC , 3 , 48},

{"-3.5pc", SVGLength::PC , -3.5 , -3.5*16.0},

{"1.2345678mm", SVGLength::MM , 1.2345678, 1.2345678f*96.0/25.4}, // TODO: More precise constants? (a 7 digit constant when the default precision is 8 digits?)

{"123.45678cm", SVGLength::CM , 123.45678 , 123.45678f*96.0/2.54}, // Note that svg_length_read is casting the result from g_ascii_strtod to float.

{"73.162987in", SVGLength::INCH, 73.162987 , 73.162987f*96.0/1.00}};

SvgLengthTest::test_t const SvgLengthTest::relative_tests[3] = {

{"123em", SVGLength::EM, 123, 123. * 7.},

{"123ex", SVGLength::EX, 123, 123. * 13.},

{"123%", SVGLength::PERCENT, 1.23, 1.23 * 19.}};

char const * SvgLengthTest::fail_tests[8] = {

"123 px",

"123e",

"123e+m",

"123ec",

"123pxt",

"--123",

"",

"px"};