diff options
| author | Rob Pike <r@golang.org> | 2008-11-19 19:11:01 -0800 |
|---|---|---|
| committer | Rob Pike <r@golang.org> | 2008-11-19 19:11:01 -0800 |
| commit | 58f7022b3ac96b1478c544c4f1892abd9b4803b9 (patch) | |
| tree | 81b27c09f43aede65a97648aa943b2901e9f2c3b /src/lib/strconv/atof_test.go | |
| parent | e49f6f5647fbdbe74d7679d7cf0539fdfcd6b213 (diff) | |
| download | golang-58f7022b3ac96b1478c544c4f1892abd9b4803b9.tar.gz | |
change naming convention for tests from
test*.go
to
*test.go
R=rsc
DELTA=1747 (864 added, 855 deleted, 28 changed)
OCL=19666
CL=19666
Diffstat (limited to 'src/lib/strconv/atof_test.go')
| -rw-r--r-- | src/lib/strconv/atof_test.go | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/src/lib/strconv/atof_test.go b/src/lib/strconv/atof_test.go new file mode 100644 index 000000000..cf4603f81 --- /dev/null +++ b/src/lib/strconv/atof_test.go @@ -0,0 +1,133 @@ +// Copyright 2009 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 +import ( + "fmt"; + "os"; + "strconv"; + "testing" +) + +type Test struct { + in string; + out string; + err *os.Error; +} + +var tests = []Test { + Test{ "", "0", os.EINVAL }, + Test{ "1", "1", nil }, + Test{ "+1", "1", nil }, + Test{ "1x", "0", os.EINVAL }, + Test{ "1.1.", "0", os.EINVAL }, + Test{ "1e23", "1e+23", nil }, + Test{ "100000000000000000000000", "1e+23", nil }, + Test{ "1e-100", "1e-100", nil }, + Test{ "123456700", "1.234567e+08", nil }, + Test{ "99999999999999974834176", "9.999999999999997e+22", nil }, + Test{ "100000000000000000000001", "1.0000000000000001e+23", nil }, + Test{ "100000000000000008388608", "1.0000000000000001e+23", nil }, + Test{ "100000000000000016777215", "1.0000000000000001e+23", nil }, + Test{ "100000000000000016777216", "1.0000000000000003e+23", nil }, + Test{ "-1", "-1", nil }, + Test{ "-0", "0", nil }, + Test{ "1e-20", "1e-20", nil }, + Test{ "625e-3", "0.625", nil }, + + // largest float64 + Test{ "1.7976931348623157e308", "1.7976931348623157e+308", nil }, + Test{ "-1.7976931348623157e308", "-1.7976931348623157e+308", nil }, + // next float64 - too large + Test{ "1.7976931348623159e308", "+Inf", os.ERANGE }, + Test{ "-1.7976931348623159e308", "-Inf", os.ERANGE }, + // the border is ...158079 + // borderline - okay + Test{ "1.7976931348623158e308", "1.7976931348623157e+308", nil }, + Test{ "-1.7976931348623158e308", "-1.7976931348623157e+308", nil }, + // borderline - too large + Test{ "1.797693134862315808e308", "+Inf", os.ERANGE }, + Test{ "-1.797693134862315808e308", "-Inf", os.ERANGE }, + + // a little too large + Test{ "1e308", "1e+308", nil }, + Test{ "2e308", "+Inf", os.ERANGE }, + Test{ "1e309", "+Inf", os.ERANGE }, + + // way too large + Test{ "1e310", "+Inf", os.ERANGE }, + Test{ "-1e310", "-Inf", os.ERANGE }, + Test{ "1e400", "+Inf", os.ERANGE }, + Test{ "-1e400", "-Inf", os.ERANGE }, + Test{ "1e400000", "+Inf", os.ERANGE }, + Test{ "-1e400000", "-Inf", os.ERANGE }, + + // denormalized + Test{ "1e-305", "1e-305", nil }, + Test{ "1e-306", "1e-306", nil }, + Test{ "1e-307", "1e-307", nil }, + Test{ "1e-308", "1e-308", nil }, + Test{ "1e-309", "1e-309", nil }, + Test{ "1e-310", "1e-310", nil }, + Test{ "1e-322", "1e-322", nil }, + // smallest denormal + Test{ "5e-324", "5e-324", nil }, + // too small + Test{ "4e-324", "0", nil }, + // way too small + Test{ "1e-350", "0", nil }, + Test{ "1e-400000", "0", nil }, + + // try to overflow exponent + Test{ "1e-4294967296", "0", nil }, + Test{ "1e+4294967296", "+Inf", os.ERANGE }, + Test{ "1e-18446744073709551616", "0", nil }, + Test{ "1e+18446744073709551616", "+Inf", os.ERANGE }, + + // Parse errors + Test{ "1e", "0", os.EINVAL }, + Test{ "1e-", "0", os.EINVAL }, + Test{ ".e-1", "0", os.EINVAL }, +} + +func XTestAtof(t *testing.T, opt bool) { + oldopt := strconv.optimize; + strconv.optimize = opt; + for i := 0; i < len(tests); i++ { + test := &tests[i]; + out, err := strconv.atof64(test.in); + outs := strconv.ftoa64(out, 'g', -1); + if outs != test.out || err != test.err { + t.Errorf("strconv.atof64(%v) = %v, %v want %v, %v\n", + test.in, out, err, test.out, test.err); + } + + if float64(float32(out)) == out { + out32, err := strconv.atof32(test.in); + outs := strconv.ftoa32(out32, 'g', -1); + if outs != test.out || err != test.err { + t.Errorf("strconv.atof32(%v) = %v, %v want %v, %v # %v\n", + test.in, out32, err, test.out, test.err, out); + } + } + + if floatsize == 64 || float64(float32(out)) == out { + outf, err := strconv.atof(test.in); + outs := strconv.ftoa(outf, 'g', -1); + if outs != test.out || err != test.err { + t.Errorf("strconv.ftoa(%v) = %v, %v want %v, %v # %v\n", + test.in, outf, err, test.out, test.err, out); + } + } + } + strconv.optimize = oldopt; +} + +export func TestAtof(t *testing.T) { + XTestAtof(t, true); +} + +export func TestAtofSlow(t *testing.T) { + XTestAtof(t, false); +} |
