Function TestScriptNumInt32

txscript/scriptnum_test.go:216–273

TestScriptNumInt32 ensures that the Int32 function on script number behaves as expected.

(t *testing.T)

// TestScriptNumInt32 ensures that the Int32 function on script number behaves
// as expected.
func TestScriptNumInt32(t *testing.T) {
	t.Parallel()

	tests := []struct {
		in   scriptNum
		want int32
	}{
		// Values inside the valid int32 range are just the values
		// themselves cast to an int32.
		{0, 0},
		{1, 1},
		{-1, -1},
		{127, 127},
		{-127, -127},
		{128, 128},
		{-128, -128},
		{129, 129},
		{-129, -129},
		{256, 256},
		{-256, -256},
		{32767, 32767},
		{-32767, -32767},
		{32768, 32768},
		{-32768, -32768},
		{65535, 65535},
		{-65535, -65535},
		{524288, 524288},
		{-524288, -524288},
		{7340032, 7340032},
		{-7340032, -7340032},
		{8388608, 8388608},
		{-8388608, -8388608},
		{2147483647, 2147483647},
		{-2147483647, -2147483647},
		{-2147483648, -2147483648},

		// Values outside of the valid int32 range are limited to int32.
		{2147483648, 2147483647},
		{-2147483649, -2147483648},
		{1152921504606846975, 2147483647},
		{-1152921504606846975, -2147483648},
		{2305843009213693951, 2147483647},
		{-2305843009213693951, -2147483648},
		{4611686018427387903, 2147483647},
		{-4611686018427387903, -2147483648},
		{9223372036854775807, 2147483647},
		{-9223372036854775808, -2147483648},
	}

	for _, test := range tests {
		got := test.in.Int32()
		if got != test.want {
			t.Errorf("Int32: did not get expected value for %d - "+
				"got %d, want %d", test.in, got, test.want)
			continue
		}
	}
}