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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package strconv_test
import (
. "strconv"
"testing"
)
func TestFormatComplex(t *testing.T) {
tests := []struct {
c complex128
fmt byte
prec int
bitSize int
out string
}{
// a variety of signs
{1 + 2i, 'g', -1, 128, "(1+2i)"},
{3 - 4i, 'g', -1, 128, "(3-4i)"},
{-5 + 6i, 'g', -1, 128, "(-5+6i)"},
{-7 - 8i, 'g', -1, 128, "(-7-8i)"},
// test that fmt and prec are working
{3.14159 + 0.00123i, 'e', 3, 128, "(3.142e+00+1.230e-03i)"},
{3.14159 + 0.00123i, 'f', 3, 128, "(3.142+0.001i)"},
{3.14159 + 0.00123i, 'g', 3, 128, "(3.14+0.00123i)"},
// ensure bitSize rounding is working
{1.2345678901234567 + 9.876543210987654i, 'f', -1, 128, "(1.2345678901234567+9.876543210987654i)"},
{1.2345678901234567 + 9.876543210987654i, 'f', -1, 64, "(1.2345679+9.876543i)"},
// other cases are handled by FormatFloat tests
}
for _, test := range tests {
out := FormatComplex(test.c, test.fmt, test.prec, test.bitSize)
if out != test.out {
t.Fatalf("FormatComplex(%v, %q, %d, %d) = %q; want %q",
test.c, test.fmt, test.prec, test.bitSize, out, test.out)
}
}
}
func TestFormatComplexInvalidBitSize(t *testing.T) {
defer func() {
if r := recover(); r == nil {
t.Fatalf("expected panic due to invalid bitSize")
}
}()
_ = FormatComplex(1+2i, 'g', -1, 100)
}
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