3 // Copyright 2010 The Go Authors. All rights reserved.
4 // Use of this source code is governed by a BSD-style
5 // license that can be found in the LICENSE file.
16 type ErrorTest struct {
24 i8, j8, k8 int8 = 0, 0, 1
25 i16, j16, k16 int16 = 0, 0, 1
26 i32, j32, k32 int32 = 0, 0, 1
27 i64, j64, k64 int64 = 0, 0, 1
29 u, v, w uint = 0, 0, 1
30 u8, v8, w8 uint8 = 0, 0, 1
31 u16, v16, w16 uint16 = 0, 0, 1
32 u32, v32, w32 uint32 = 0, 0, 1
33 u64, v64, w64 uint64 = 0, 0, 1
34 up, vp, wp uintptr = 0, 0, 1
36 f, g, h float64 = 0, 0, 1
37 f32, g32, h32 float32 = 0, 0, 1
38 f64, g64, h64, inf, negInf, nan float64 = 0, 0, 1, math.Inf(1), math.Inf(-1), math.NaN()
40 c, d, e complex128 = 0 + 0i, 0 + 0i, 1 + 1i
41 c64, d64, e64 complex64 = 0 + 0i, 0 + 0i, 1 + 1i
42 c128, d128, e128 complex128 = 0 + 0i, 0 + 0i, 1 + 1i
45 // Fool gccgo into thinking that these variables can change.
105 // We could assign to _ but the compiler optimizes it too easily.
106 func use(v interface{}) {
110 // Verify error/no error for all types.
111 var errorTests = []ErrorTest{
112 // All integer divide by zero should error.
113 ErrorTest{"int 0/0", func() { use(i / j) }, "divide"},
114 ErrorTest{"int8 0/0", func() { use(i8 / j8) }, "divide"},
115 ErrorTest{"int16 0/0", func() { use(i16 / j16) }, "divide"},
116 ErrorTest{"int32 0/0", func() { use(i32 / j32) }, "divide"},
117 ErrorTest{"int64 0/0", func() { use(i64 / j64) }, "divide"},
119 ErrorTest{"int 1/0", func() { use(k / j) }, "divide"},
120 ErrorTest{"int8 1/0", func() { use(k8 / j8) }, "divide"},
121 ErrorTest{"int16 1/0", func() { use(k16 / j16) }, "divide"},
122 ErrorTest{"int32 1/0", func() { use(k32 / j32) }, "divide"},
123 ErrorTest{"int64 1/0", func() { use(k64 / j64) }, "divide"},
125 ErrorTest{"uint 0/0", func() { use(u / v) }, "divide"},
126 ErrorTest{"uint8 0/0", func() { use(u8 / v8) }, "divide"},
127 ErrorTest{"uint16 0/0", func() { use(u16 / v16) }, "divide"},
128 ErrorTest{"uint32 0/0", func() { use(u32 / v32) }, "divide"},
129 ErrorTest{"uint64 0/0", func() { use(u64 / v64) }, "divide"},
130 ErrorTest{"uintptr 0/0", func() { use(up / vp) }, "divide"},
132 ErrorTest{"uint 1/0", func() { use(w / v) }, "divide"},
133 ErrorTest{"uint8 1/0", func() { use(w8 / v8) }, "divide"},
134 ErrorTest{"uint16 1/0", func() { use(w16 / v16) }, "divide"},
135 ErrorTest{"uint32 1/0", func() { use(w32 / v32) }, "divide"},
136 ErrorTest{"uint64 1/0", func() { use(w64 / v64) }, "divide"},
137 ErrorTest{"uintptr 1/0", func() { use(wp / vp) }, "divide"},
139 // All float64ing divide by zero should not error.
140 ErrorTest{"float64 0/0", func() { use(f / g) }, ""},
141 ErrorTest{"float32 0/0", func() { use(f32 / g32) }, ""},
142 ErrorTest{"float64 0/0", func() { use(f64 / g64) }, ""},
144 ErrorTest{"float64 1/0", func() { use(h / g) }, ""},
145 ErrorTest{"float32 1/0", func() { use(h32 / g32) }, ""},
146 ErrorTest{"float64 1/0", func() { use(h64 / g64) }, ""},
147 ErrorTest{"float64 inf/0", func() { use(inf / g64) }, ""},
148 ErrorTest{"float64 -inf/0", func() { use(negInf / g64) }, ""},
149 ErrorTest{"float64 nan/0", func() { use(nan / g64) }, ""},
151 // All complex divide by zero should not error.
152 ErrorTest{"complex 0/0", func() { use(c / d) }, ""},
153 ErrorTest{"complex64 0/0", func() { use(c64 / d64) }, ""},
154 ErrorTest{"complex128 0/0", func() { use(c128 / d128) }, ""},
156 ErrorTest{"complex 1/0", func() { use(e / d) }, ""},
157 ErrorTest{"complex64 1/0", func() { use(e64 / d64) }, ""},
158 ErrorTest{"complex128 1/0", func() { use(e128 / d128) }, ""},
161 func error_(fn func()) (error string) {
163 if e := recover(); e != nil {
164 error = e.(runtime.Error).Error()
171 type FloatTest struct {
176 var float64Tests = []FloatTest{
177 FloatTest{0, 0, nan},
178 FloatTest{nan, 0, nan},
179 FloatTest{inf, 0, inf},
180 FloatTest{negInf, 0, negInf},
183 func alike(a, b float64) bool {
185 case math.IsNaN(a) && math.IsNaN(b):
188 return math.Signbit(a) == math.Signbit(b)
195 for _, t := range errorTests {
201 case t.err == "" && err == "":
203 case t.err != "" && err == "":
208 fmt.Printf("%s: expected %q; got no error\n", t.name, t.err)
209 case t.err == "" && err != "":
214 fmt.Printf("%s: expected no error; got %q\n", t.name, err)
215 case t.err != "" && err != "":
216 if strings.Index(err, t.err) < 0 {
221 fmt.Printf("%s: expected %q; got %q\n", t.name, t.err, err)
227 // At this point we know we don't error on the values we're testing
228 for _, t := range float64Tests {
230 if !alike(x, t.out) {
235 fmt.Printf("%v/%v: expected %g error; got %g\n", t.f, t.g, t.out, x)