// 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 ( "math" "math/cmplx" "reflect" . "strconv" "testing" ) var ( infp0 = complex(math.Inf(+1), 0) infm0 = complex(math.Inf(-1), 0) inf0p = complex(0, math.Inf(+1)) inf0m = complex(0, math.Inf(-1)) infpp = complex(math.Inf(+1), math.Inf(+1)) infpm = complex(math.Inf(+1), math.Inf(-1)) infmp = complex(math.Inf(-1), math.Inf(+1)) infmm = complex(math.Inf(-1), math.Inf(-1)) ) type atocTest struct { in string out complex128 err error } func TestParseComplex(t *testing.T) { tests := []atocTest{ // Clearly invalid {"", 0, ErrSyntax}, {" ", 0, ErrSyntax}, {"(", 0, ErrSyntax}, {")", 0, ErrSyntax}, {"i", 0, ErrSyntax}, {"+i", 0, ErrSyntax}, {"-i", 0, ErrSyntax}, {"1I", 0, ErrSyntax}, {"10 + 5i", 0, ErrSyntax}, {"3+", 0, ErrSyntax}, {"3+5", 0, ErrSyntax}, {"3+5+5i", 0, ErrSyntax}, // Parentheses {"()", 0, ErrSyntax}, {"(i)", 0, ErrSyntax}, {"(0)", 0, nil}, {"(1i)", 1i, nil}, {"(3.0+5.5i)", 3.0 + 5.5i, nil}, {"(1)+1i", 0, ErrSyntax}, {"(3.0+5.5i", 0, ErrSyntax}, {"3.0+5.5i)", 0, ErrSyntax}, // NaNs {"NaN", complex(math.NaN(), 0), nil}, {"NANi", complex(0, math.NaN()), nil}, {"nan+nAni", complex(math.NaN(), math.NaN()), nil}, {"+NaN", 0, ErrSyntax}, {"-NaN", 0, ErrSyntax}, {"NaN-NaNi", 0, ErrSyntax}, // Infs {"Inf", infp0, nil}, {"+inf", infp0, nil}, {"-inf", infm0, nil}, {"Infinity", infp0, nil}, {"+INFINITY", infp0, nil}, {"-infinity", infm0, nil}, {"+infi", inf0p, nil}, {"0-infinityi", inf0m, nil}, {"Inf+Infi", infpp, nil}, {"+Inf-Infi", infpm, nil}, {"-Infinity+Infi", infmp, nil}, {"inf-inf", 0, ErrSyntax}, // Zeros {"0", 0, nil}, {"0i", 0, nil}, {"-0.0i", 0, nil}, {"0+0.0i", 0, nil}, {"0e+0i", 0, nil}, {"0e-0+0i", 0, nil}, {"-0.0-0.0i", 0, nil}, {"0e+012345", 0, nil}, {"0x0p+012345i", 0, nil}, {"0x0.00p-012345i", 0, nil}, {"+0e-0+0e-0i", 0, nil}, {"0e+0+0e+0i", 0, nil}, {"-0e+0-0e+0i", 0, nil}, // Regular non-zeroes {"0.1", 0.1, nil}, {"0.1i", 0 + 0.1i, nil}, {"0.123", 0.123, nil}, {"0.123i", 0 + 0.123i, nil}, {"0.123+0.123i", 0.123 + 0.123i, nil}, {"99", 99, nil}, {"+99", 99, nil}, {"-99", -99, nil}, {"+1i", 1i, nil}, {"-1i", -1i, nil}, {"+3+1i", 3 + 1i, nil}, {"30+3i", 30 + 3i, nil}, {"+3e+3-3e+3i", 3e+3 - 3e+3i, nil}, {"+3e+3+3e+3i", 3e+3 + 3e+3i, nil}, {"+3e+3+3e+3i+", 0, ErrSyntax}, // Separators {"0.1", 0.1, nil}, {"0.1i", 0 + 0.1i, nil}, {"0.1_2_3", 0.123, nil}, {"+0x_3p3i", 0x3p3i, nil}, {"0_0+0x_0p0i", 0, nil}, {"0x_10.3p-8+0x3p3i", 0x10.3p-8 + 0x3p3i, nil}, {"+0x_1_0.3p-8+0x_3_0p3i", 0x10.3p-8 + 0x30p3i, nil}, {"0x1_0.3p+8-0x_3p3i", 0x10.3p+8 - 0x3p3i, nil}, // Hexadecimals {"0x10.3p-8+0x3p3i", 0x10.3p-8 + 0x3p3i, nil}, {"+0x10.3p-8+0x3p3i", 0x10.3p-8 + 0x3p3i, nil}, {"0x10.3p+8-0x3p3i", 0x10.3p+8 - 0x3p3i, nil}, {"0x1p0", 1, nil}, {"0x1p1", 2, nil}, {"0x1p-1", 0.5, nil}, {"0x1ep-1", 15, nil}, {"-0x1ep-1", -15, nil}, {"-0x2p3", -16, nil}, {"0x1e2", 0, ErrSyntax}, {"1p2", 0, ErrSyntax}, {"0x1e2i", 0, ErrSyntax}, // ErrRange // next float64 - too large {"+0x1p1024", infp0, ErrRange}, {"-0x1p1024", infm0, ErrRange}, {"+0x1p1024i", inf0p, ErrRange}, {"-0x1p1024i", inf0m, ErrRange}, {"+0x1p1024+0x1p1024i", infpp, ErrRange}, {"+0x1p1024-0x1p1024i", infpm, ErrRange}, {"-0x1p1024+0x1p1024i", infmp, ErrRange}, {"-0x1p1024-0x1p1024i", infmm, ErrRange}, // the border is ...158079 // borderline - okay {"+0x1.fffffffffffff7fffp1023+0x1.fffffffffffff7fffp1023i", 1.7976931348623157e+308 + 1.7976931348623157e+308i, nil}, {"+0x1.fffffffffffff7fffp1023-0x1.fffffffffffff7fffp1023i", 1.7976931348623157e+308 - 1.7976931348623157e+308i, nil}, {"-0x1.fffffffffffff7fffp1023+0x1.fffffffffffff7fffp1023i", -1.7976931348623157e+308 + 1.7976931348623157e+308i, nil}, {"-0x1.fffffffffffff7fffp1023-0x1.fffffffffffff7fffp1023i", -1.7976931348623157e+308 - 1.7976931348623157e+308i, nil}, // borderline - too large {"+0x1.fffffffffffff8p1023", infp0, ErrRange}, {"-0x1fffffffffffff.8p+971", infm0, ErrRange}, {"+0x1.fffffffffffff8p1023i", inf0p, ErrRange}, {"-0x1fffffffffffff.8p+971i", inf0m, ErrRange}, {"+0x1.fffffffffffff8p1023+0x1.fffffffffffff8p1023i", infpp, ErrRange}, {"+0x1.fffffffffffff8p1023-0x1.fffffffffffff8p1023i", infpm, ErrRange}, {"-0x1fffffffffffff.8p+971+0x1fffffffffffff.8p+971i", infmp, ErrRange}, {"-0x1fffffffffffff8p+967-0x1fffffffffffff8p+967i", infmm, ErrRange}, // a little too large {"1e308+1e308i", 1e+308 + 1e+308i, nil}, {"2e308+2e308i", infpp, ErrRange}, {"1e309+1e309i", infpp, ErrRange}, {"0x1p1025+0x1p1025i", infpp, ErrRange}, {"2e308", infp0, ErrRange}, {"1e309", infp0, ErrRange}, {"0x1p1025", infp0, ErrRange}, {"2e308i", inf0p, ErrRange}, {"1e309i", inf0p, ErrRange}, {"0x1p1025i", inf0p, ErrRange}, // way too large {"+1e310+1e310i", infpp, ErrRange}, {"+1e310-1e310i", infpm, ErrRange}, {"-1e310+1e310i", infmp, ErrRange}, {"-1e310-1e310i", infmm, ErrRange}, // under/overflow exponent {"1e-4294967296", 0, nil}, {"1e-4294967296i", 0, nil}, {"1e-4294967296+1i", 1i, nil}, {"1+1e-4294967296i", 1, nil}, {"1e-4294967296+1e-4294967296i", 0, nil}, {"1e+4294967296", infp0, ErrRange}, {"1e+4294967296i", inf0p, ErrRange}, {"1e+4294967296+1e+4294967296i", infpp, ErrRange}, {"1e+4294967296-1e+4294967296i", infpm, ErrRange}, } for i := range tests { test := &tests[i] if test.err != nil { test.err = &NumError{Func: "ParseComplex", Num: test.in, Err: test.err} } got, err := ParseComplex(test.in, 128) if !reflect.DeepEqual(err, test.err) { t.Fatalf("ParseComplex(%q, 128) = %v, %v; want %v, %v", test.in, got, err, test.out, test.err) } if !(cmplx.IsNaN(test.out) && cmplx.IsNaN(got)) && got != test.out { t.Fatalf("ParseComplex(%q, 128) = %v, %v; want %v, %v", test.in, got, err, test.out, test.err) } if complex128(complex64(test.out)) == test.out { got, err := ParseComplex(test.in, 64) if !reflect.DeepEqual(err, test.err) { t.Fatalf("ParseComplex(%q, 64) = %v, %v; want %v, %v", test.in, got, err, test.out, test.err) } got64 := complex64(got) if complex128(got64) != test.out { t.Fatalf("ParseComplex(%q, 64) = %v, %v; want %v, %v", test.in, got, err, test.out, test.err) } } } } // Issue 42297: allow ParseComplex(s, not_32_or_64) for legacy reasons func TestParseComplexIncorrectBitSize(t *testing.T) { const s = "1.5e308+1.0e307i" const want = 1.5e308 + 1.0e307i for _, bitSize := range []int{0, 10, 100, 256} { c, err := ParseComplex(s, bitSize) if err != nil { t.Fatalf("ParseComplex(%q, %d) gave error %s", s, bitSize, err) } if c != want { t.Fatalf("ParseComplex(%q, %d) = %g (expected %g)", s, bitSize, c, want) } } }