public function testSatoshiConversion()
 {
     $toSatoshi = [["0.00000001", "1", 1], [1.0E-8, "1", 1], ["0.29560000", "29560000", 29560000], [0.2956, "29560000", 29560000], ["1.0000009", "100000090", 100000090], [1.0000009, "100000090", 100000090], ["1.00000009", "100000009", 100000009], [1.00000009, "100000009", 100000009], ["21000000.00000001", "2100000000000001", 2100000000000001.0], [21000000.00000001, "2100000000000001", 2100000000000001.0], ["21000000.0000009", "2100000000000090", 2100000000000090.0], [21000000.0000009, "2100000000000090", 2100000000000090.0], ["21000000.00000009", "2100000000000009", 2100000000000009.0], [21000000.00000009, "2100000000000009", 2100000000000009.0], ["210000000.00000009", "21000000000000009", 2.100000000000001E+16], [210000000.0000001, "21000000000000009", 2.100000000000001E+16]];
     $toBTC = [["1", "0.00000001"], [1, "0.00000001"], ["29560000", "0.29560000"], [29560000, "0.29560000"], ["100000090", "1.00000090"], [100000090, "1.00000090"], ["100000009", "1.00000009"], [100000009, "1.00000009"], ["2100000000000001", "21000000.00000001"], [2100000000000001.0, "21000000.00000001"], ["2100000000000090", "21000000.00000090"], [2100000000000090.0, "21000000.00000090"], ["2100000000000009", "21000000.00000009"], [2100000000000009.0, "21000000.00000009"], ["21000000000000009", "210000000.00000009"], [2.100000000000001E+16, "210000000.00000009"], ["210000000000000009", "2100000000.00000009"], [2.1E+17, "2100000000.00000009"], ["2100000000000000009", "21000000000.00000009"], [2.1E+18, "21000000000.00000009"]];
     foreach ($toSatoshi as $i => $test) {
         $btc = $test[0];
         $satoshiString = $test[1];
         $satoshiInt = $test[2];
         $string = BlocktrailSDK::toSatoshiString($btc);
         $this->assertEquals($satoshiString, $string, "[{$i}] {$btc} => {$satoshiString} =? {$string}");
         $this->assertTrue($satoshiString === $string, "[{$i}] {$btc} => {$satoshiString} ==? {$string}");
         $int = BlocktrailSDK::toSatoshi($btc);
         $this->assertEquals($satoshiInt, $int, "[{$i}] {$btc} => {$satoshiInt} =? {$int}");
         $this->assertTrue($satoshiInt === $int, "[{$i}] {$btc} => {$satoshiInt} ==? {$int}");
     }
     foreach ($toBTC as $i => $test) {
         $satoshi = $test[0];
         $btc = $test[1];
         $this->assertEquals($btc, BlocktrailSDK::toBTC($satoshi), "[{$i}] {$satoshi} => {$btc}");
         $this->assertTrue($btc === BlocktrailSDK::toBTC($satoshi), "[{$i}] {$satoshi} => {$btc}");
     }
     $this->markTestIncomplete("@TODO: test toBTCString");
 }