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-rw-r--r--src/strconv/atoc_test.go229
1 files changed, 229 insertions, 0 deletions
diff --git a/src/strconv/atoc_test.go b/src/strconv/atoc_test.go
new file mode 100644
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--- /dev/null
+++ b/src/strconv/atoc_test.go
@@ -0,0 +1,229 @@
+// 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)
+ }
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 23:28:41 +0000