How to use Error method of test Package

Best Go-testdeep code snippet using test.Error

format_test.go

Source:format_test.go Github

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...34 for i, tt := range tests {35 testFormatRegexp(t, i, tt.error, tt.format, tt.want)36 }37}38func TestFormatErrorf(t *testing.T) {39 tests := []struct {40 error41 format string42 want string43 }{{44 Errorf("%s", "error"),45 "%s",46 "error",47 }, {48 Errorf("%s", "error"),49 "%v",50 "error",51 }, {52 Errorf("%s", "error"),53 "%+v",54 "error\n" +55 "github.com/pkg/errors.TestFormatErrorf\n" +56 "\t.+/github.com/pkg/errors/format_test.go:56",57 }}58 for i, tt := range tests {59 testFormatRegexp(t, i, tt.error, tt.format, tt.want)60 }61}62func TestFormatWrap(t *testing.T) {63 tests := []struct {64 error65 format string66 want string67 }{{68 Wrap(New("error"), "error2"),69 "%s",70 "error2: error",71 }, {72 Wrap(New("error"), "error2"),73 "%v",74 "error2: error",75 }, {76 Wrap(New("error"), "error2"),77 "%+v",78 "error\n" +79 "github.com/pkg/errors.TestFormatWrap\n" +80 "\t.+/github.com/pkg/errors/format_test.go:82",81 }, {82 Wrap(io.EOF, "error"),83 "%s",84 "error: EOF",85 }, {86 Wrap(io.EOF, "error"),87 "%v",88 "error: EOF",89 }, {90 Wrap(io.EOF, "error"),91 "%+v",92 "EOF\n" +93 "error\n" +94 "github.com/pkg/errors.TestFormatWrap\n" +95 "\t.+/github.com/pkg/errors/format_test.go:96",96 }, {97 Wrap(Wrap(io.EOF, "error1"), "error2"),98 "%+v",99 "EOF\n" +100 "error1\n" +101 "github.com/pkg/errors.TestFormatWrap\n" +102 "\t.+/github.com/pkg/errors/format_test.go:103\n",103 }, {104 Wrap(New("error with space"), "context"),105 "%q",106 `"context: error with space"`,107 }}108 for i, tt := range tests {109 testFormatRegexp(t, i, tt.error, tt.format, tt.want)110 }111}112func TestFormatWrapf(t *testing.T) {113 tests := []struct {114 error115 format string116 want string117 }{{118 Wrapf(io.EOF, "error%d", 2),119 "%s",120 "error2: EOF",121 }, {122 Wrapf(io.EOF, "error%d", 2),123 "%v",124 "error2: EOF",125 }, {126 Wrapf(io.EOF, "error%d", 2),127 "%+v",128 "EOF\n" +129 "error2\n" +130 "github.com/pkg/errors.TestFormatWrapf\n" +131 "\t.+/github.com/pkg/errors/format_test.go:134",132 }, {133 Wrapf(New("error"), "error%d", 2),134 "%s",135 "error2: error",136 }, {137 Wrapf(New("error"), "error%d", 2),138 "%v",139 "error2: error",140 }, {141 Wrapf(New("error"), "error%d", 2),142 "%+v",143 "error\n" +144 "github.com/pkg/errors.TestFormatWrapf\n" +145 "\t.+/github.com/pkg/errors/format_test.go:149",146 }}147 for i, tt := range tests {148 testFormatRegexp(t, i, tt.error, tt.format, tt.want)149 }150}151func TestFormatWithStack(t *testing.T) {152 tests := []struct {153 error154 format string155 want []string156 }{{157 WithStack(io.EOF),158 "%s",159 []string{"EOF"},160 }, {161 WithStack(io.EOF),162 "%v",163 []string{"EOF"},164 }, {165 WithStack(io.EOF),166 "%+v",167 []string{"EOF",168 "github.com/pkg/errors.TestFormatWithStack\n" +169 "\t.+/github.com/pkg/errors/format_test.go:175"},170 }, {171 WithStack(New("error")),172 "%s",173 []string{"error"},174 }, {175 WithStack(New("error")),176 "%v",177 []string{"error"},178 }, {179 WithStack(New("error")),180 "%+v",181 []string{"error",182 "github.com/pkg/errors.TestFormatWithStack\n" +183 "\t.+/github.com/pkg/errors/format_test.go:189",184 "github.com/pkg/errors.TestFormatWithStack\n" +185 "\t.+/github.com/pkg/errors/format_test.go:189"},186 }, {187 WithStack(WithStack(io.EOF)),188 "%+v",189 []string{"EOF",190 "github.com/pkg/errors.TestFormatWithStack\n" +191 "\t.+/github.com/pkg/errors/format_test.go:197",192 "github.com/pkg/errors.TestFormatWithStack\n" +193 "\t.+/github.com/pkg/errors/format_test.go:197"},194 }, {195 WithStack(WithStack(Wrapf(io.EOF, "message"))),196 "%+v",197 []string{"EOF",198 "message",199 "github.com/pkg/errors.TestFormatWithStack\n" +200 "\t.+/github.com/pkg/errors/format_test.go:205",201 "github.com/pkg/errors.TestFormatWithStack\n" +202 "\t.+/github.com/pkg/errors/format_test.go:205",203 "github.com/pkg/errors.TestFormatWithStack\n" +204 "\t.+/github.com/pkg/errors/format_test.go:205"},205 }, {206 WithStack(Errorf("error%d", 1)),207 "%+v",208 []string{"error1",209 "github.com/pkg/errors.TestFormatWithStack\n" +210 "\t.+/github.com/pkg/errors/format_test.go:216",211 "github.com/pkg/errors.TestFormatWithStack\n" +212 "\t.+/github.com/pkg/errors/format_test.go:216"},213 }}214 for i, tt := range tests {215 testFormatCompleteCompare(t, i, tt.error, tt.format, tt.want, true)216 }217}218func TestFormatWithMessage(t *testing.T) {219 tests := []struct {220 error221 format string222 want []string223 }{{224 WithMessage(New("error"), "error2"),225 "%s",226 []string{"error2: error"},227 }, {228 WithMessage(New("error"), "error2"),229 "%v",230 []string{"error2: error"},231 }, {232 WithMessage(New("error"), "error2"),233 "%+v",234 []string{235 "error",236 "github.com/pkg/errors.TestFormatWithMessage\n" +237 "\t.+/github.com/pkg/errors/format_test.go:244",238 "error2"},239 }, {240 WithMessage(io.EOF, "addition1"),241 "%s",242 []string{"addition1: EOF"},243 }, {244 WithMessage(io.EOF, "addition1"),245 "%v",246 []string{"addition1: EOF"},247 }, {248 WithMessage(io.EOF, "addition1"),249 "%+v",250 []string{"EOF", "addition1"},251 }, {252 WithMessage(WithMessage(io.EOF, "addition1"), "addition2"),253 "%v",254 []string{"addition2: addition1: EOF"},255 }, {256 WithMessage(WithMessage(io.EOF, "addition1"), "addition2"),257 "%+v",258 []string{"EOF", "addition1", "addition2"},259 }, {260 Wrap(WithMessage(io.EOF, "error1"), "error2"),261 "%+v",262 []string{"EOF", "error1", "error2",263 "github.com/pkg/errors.TestFormatWithMessage\n" +264 "\t.+/github.com/pkg/errors/format_test.go:272"},265 }, {266 WithMessage(Errorf("error%d", 1), "error2"),267 "%+v",268 []string{"error1",269 "github.com/pkg/errors.TestFormatWithMessage\n" +270 "\t.+/github.com/pkg/errors/format_test.go:278",271 "error2"},272 }, {273 WithMessage(WithStack(io.EOF), "error"),274 "%+v",275 []string{276 "EOF",277 "github.com/pkg/errors.TestFormatWithMessage\n" +278 "\t.+/github.com/pkg/errors/format_test.go:285",279 "error"},280 }, {281 WithMessage(Wrap(WithStack(io.EOF), "inside-error"), "outside-error"),282 "%+v",283 []string{284 "EOF",285 "github.com/pkg/errors.TestFormatWithMessage\n" +286 "\t.+/github.com/pkg/errors/format_test.go:293",287 "inside-error",288 "github.com/pkg/errors.TestFormatWithMessage\n" +289 "\t.+/github.com/pkg/errors/format_test.go:293",290 "outside-error"},291 }}292 for i, tt := range tests {293 testFormatCompleteCompare(t, i, tt.error, tt.format, tt.want, true)294 }295}296func TestFormatGeneric(t *testing.T) {297 starts := []struct {298 err error299 want []string300 }{301 {New("new-error"), []string{302 "new-error",303 "github.com/pkg/errors.TestFormatGeneric\n" +304 "\t.+/github.com/pkg/errors/format_test.go:315"},305 }, {Errorf("errorf-error"), []string{306 "errorf-error",307 "github.com/pkg/errors.TestFormatGeneric\n" +308 "\t.+/github.com/pkg/errors/format_test.go:319"},309 }, {errors.New("errors-new-error"), []string{310 "errors-new-error"},311 },312 }313 wrappers := []wrapper{314 {315 func(err error) error { return WithMessage(err, "with-message") },316 []string{"with-message"},317 }, {318 func(err error) error { return WithStack(err) },319 []string{320 "github.com/pkg/errors.(func·002|TestFormatGeneric.func2)\n\t" +321 ".+/github.com/pkg/errors/format_test.go:333",322 },323 }, {324 func(err error) error { return Wrap(err, "wrap-error") },325 []string{326 "wrap-error",327 "github.com/pkg/errors.(func·003|TestFormatGeneric.func3)\n\t" +328 ".+/github.com/pkg/errors/format_test.go:339",329 },330 }, {331 func(err error) error { return Wrapf(err, "wrapf-error%d", 1) },332 []string{333 "wrapf-error1",334 "github.com/pkg/errors.(func·004|TestFormatGeneric.func4)\n\t" +335 ".+/github.com/pkg/errors/format_test.go:346",336 },337 },338 }339 for s := range starts {340 err := starts[s].err341 want := starts[s].want342 testFormatCompleteCompare(t, s, err, "%+v", want, false)343 testGenericRecursive(t, err, want, wrappers, 3)344 }345}346func wrappedNew(message string) error { // This function will be mid-stack inlined in go 1.12+347 return New(message)348}349func TestFormatWrappedNew(t *testing.T) {350 tests := []struct {351 error352 format string353 want string354 }{{355 wrappedNew("error"),356 "%+v",357 "error\n" +358 "github.com/pkg/errors.wrappedNew\n" +359 "\t.+/github.com/pkg/errors/format_test.go:364\n" +360 "github.com/pkg/errors.TestFormatWrappedNew\n" +361 "\t.+/github.com/pkg/errors/format_test.go:373",362 }}363 for i, tt := range tests {364 testFormatRegexp(t, i, tt.error, tt.format, tt.want)365 }366}367func testFormatRegexp(t *testing.T, n int, arg interface{}, format, want string) {368 t.Helper()369 got := fmt.Sprintf(format, arg)370 gotLines := strings.SplitN(got, "\n", -1)371 wantLines := strings.SplitN(want, "\n", -1)372 if len(wantLines) > len(gotLines) {373 t.Errorf("test %d: wantLines(%d) > gotLines(%d):\n got: %q\nwant: %q", n+1, len(wantLines), len(gotLines), got, want)374 return375 }376 for i, w := range wantLines {377 match, err := regexp.MatchString(w, gotLines[i])378 if err != nil {379 t.Fatal(err)380 }381 if !match {382 t.Errorf("test %d: line %d: fmt.Sprintf(%q, err):\n got: %q\nwant: %q", n+1, i+1, format, got, want)383 }384 }385}386var stackLineR = regexp.MustCompile(`\.`)387// parseBlocks parses input into a slice, where:388// - incase entry contains a newline, its a stacktrace389// - incase entry contains no newline, its a solo line.390//391// Detecting stack boundaries only works incase the WithStack-calls are392// to be found on the same line, thats why it is optionally here.393//394// Example use:395//396// for _, e := range blocks {...

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quick_test.go

Source:quick_test.go Github

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...82func fUintAlias(a TestUintAlias) TestUintAlias { return a }83func fUintptr(a uintptr) uintptr { return a }84type TestUintptrAlias uintptr85func fUintptrAlias(a TestUintptrAlias) TestUintptrAlias { return a }86func reportError(property string, err error, t *testing.T) {87 if err != nil {88 t.Errorf("%s: %s", property, err)89 }90}91func TestCheckEqual(t *testing.T) {92 reportError("fArray", CheckEqual(fArray, fArray, nil), t)93 reportError("fArrayAlias", CheckEqual(fArrayAlias, fArrayAlias, nil), t)94 reportError("fBool", CheckEqual(fBool, fBool, nil), t)95 reportError("fBoolAlias", CheckEqual(fBoolAlias, fBoolAlias, nil), t)96 reportError("fFloat32", CheckEqual(fFloat32, fFloat32, nil), t)97 reportError("fFloat32Alias", CheckEqual(fFloat32Alias, fFloat32Alias, nil), t)98 reportError("fFloat64", CheckEqual(fFloat64, fFloat64, nil), t)99 reportError("fFloat64Alias", CheckEqual(fFloat64Alias, fFloat64Alias, nil), t)100 reportError("fComplex64", CheckEqual(fComplex64, fComplex64, nil), t)101 reportError("fComplex64Alias", CheckEqual(fComplex64Alias, fComplex64Alias, nil), t)102 reportError("fComplex128", CheckEqual(fComplex128, fComplex128, nil), t)103 reportError("fComplex128Alias", CheckEqual(fComplex128Alias, fComplex128Alias, nil), t)104 reportError("fInt16", CheckEqual(fInt16, fInt16, nil), t)105 reportError("fInt16Alias", CheckEqual(fInt16Alias, fInt16Alias, nil), t)106 reportError("fInt32", CheckEqual(fInt32, fInt32, nil), t)107 reportError("fInt32Alias", CheckEqual(fInt32Alias, fInt32Alias, nil), t)108 reportError("fInt64", CheckEqual(fInt64, fInt64, nil), t)109 reportError("fInt64Alias", CheckEqual(fInt64Alias, fInt64Alias, nil), t)110 reportError("fInt8", CheckEqual(fInt8, fInt8, nil), t)111 reportError("fInt8Alias", CheckEqual(fInt8Alias, fInt8Alias, nil), t)112 reportError("fInt", CheckEqual(fInt, fInt, nil), t)113 reportError("fIntAlias", CheckEqual(fIntAlias, fIntAlias, nil), t)114 reportError("fInt32", CheckEqual(fInt32, fInt32, nil), t)115 reportError("fInt32Alias", CheckEqual(fInt32Alias, fInt32Alias, nil), t)116 reportError("fMap", CheckEqual(fMap, fMap, nil), t)117 reportError("fMapAlias", CheckEqual(fMapAlias, fMapAlias, nil), t)118 reportError("fPtr", CheckEqual(fPtr, fPtr, nil), t)119 reportError("fPtrAlias", CheckEqual(fPtrAlias, fPtrAlias, nil), t)120 reportError("fSlice", CheckEqual(fSlice, fSlice, nil), t)121 reportError("fSliceAlias", CheckEqual(fSliceAlias, fSliceAlias, nil), t)122 reportError("fString", CheckEqual(fString, fString, nil), t)123 reportError("fStringAlias", CheckEqual(fStringAlias, fStringAlias, nil), t)124 reportError("fStruct", CheckEqual(fStruct, fStruct, nil), t)125 reportError("fStructAlias", CheckEqual(fStructAlias, fStructAlias, nil), t)126 reportError("fUint16", CheckEqual(fUint16, fUint16, nil), t)127 reportError("fUint16Alias", CheckEqual(fUint16Alias, fUint16Alias, nil), t)128 reportError("fUint32", CheckEqual(fUint32, fUint32, nil), t)129 reportError("fUint32Alias", CheckEqual(fUint32Alias, fUint32Alias, nil), t)130 reportError("fUint64", CheckEqual(fUint64, fUint64, nil), t)131 reportError("fUint64Alias", CheckEqual(fUint64Alias, fUint64Alias, nil), t)132 reportError("fUint8", CheckEqual(fUint8, fUint8, nil), t)133 reportError("fUint8Alias", CheckEqual(fUint8Alias, fUint8Alias, nil), t)134 reportError("fUint", CheckEqual(fUint, fUint, nil), t)135 reportError("fUintAlias", CheckEqual(fUintAlias, fUintAlias, nil), t)136 reportError("fUintptr", CheckEqual(fUintptr, fUintptr, nil), t)137 reportError("fUintptrAlias", CheckEqual(fUintptrAlias, fUintptrAlias, nil), t)138}139// This tests that ArbitraryValue is working by checking that all the arbitrary140// values of type MyStruct have x = 42.141type myStruct struct {142 x int143}144func (m myStruct) Generate(r *rand.Rand, _ int) reflect.Value {145 return reflect.ValueOf(myStruct{x: 42})146}147func myStructProperty(in myStruct) bool { return in.x == 42 }148func TestCheckProperty(t *testing.T) {149 reportError("myStructProperty", Check(myStructProperty, nil), t)150}151func TestFailure(t *testing.T) {152 f := func(x int) bool { return false }153 err := Check(f, nil)154 if err == nil {155 t.Errorf("Check didn't return an error")156 }157 if _, ok := err.(*CheckError); !ok {158 t.Errorf("Error was not a CheckError: %s", err)159 }160 err = CheckEqual(fUint, fUint32, nil)161 if err == nil {162 t.Errorf("#1 CheckEqual didn't return an error")163 }164 if _, ok := err.(SetupError); !ok {165 t.Errorf("#1 Error was not a SetupError: %s", err)166 }167 err = CheckEqual(func(x, y int) {}, func(x int) {}, nil)168 if err == nil {169 t.Errorf("#2 CheckEqual didn't return an error")170 }171 if _, ok := err.(SetupError); !ok {172 t.Errorf("#2 Error was not a SetupError: %s", err)173 }174 err = CheckEqual(func(x int) int { return 0 }, func(x int) int32 { return 0 }, nil)175 if err == nil {176 t.Errorf("#3 CheckEqual didn't return an error")177 }178 if _, ok := err.(SetupError); !ok {179 t.Errorf("#3 Error was not a SetupError: %s", err)180 }181}182// The following test didn't terminate because nil pointers were not183// generated.184// Issue 8818.185func TestNilPointers(t *testing.T) {186 type Recursive struct {187 Next *Recursive188 }189 f := func(rec Recursive) bool {190 return true191 }192 Check(f, nil)193}...

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zerodivide.go

Source:zerodivide.go Github

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...9 "math"10 "runtime"11 "strings"12)13type ErrorTest struct {14 name string15 fn func()16 err string17}18var (19 i, j, k int = 0, 0, 120 i8, j8, k8 int8 = 0, 0, 121 i16, j16, k16 int16 = 0, 0, 122 i32, j32, k32 int32 = 0, 0, 123 i64, j64, k64 int64 = 0, 0, 124 u, v, w uint = 0, 0, 125 u8, v8, w8 uint8 = 0, 0, 126 u16, v16, w16 uint16 = 0, 0, 127 u32, v32, w32 uint32 = 0, 0, 128 u64, v64, w64 uint64 = 0, 0, 129 up, vp, wp uintptr = 0, 0, 130 f, g, h float64 = 0, 0, 131 f32, g32, h32 float32 = 0, 0, 132 f64, g64, h64, inf, negInf, nan float64 = 0, 0, 1, math.Inf(1), math.Inf(-1), math.NaN()33 c, d, e complex128 = 0 + 0i, 0 + 0i, 1 + 1i34 c64, d64, e64 complex64 = 0 + 0i, 0 + 0i, 1 + 1i35 c128, d128, e128 complex128 = 0 + 0i, 0 + 0i, 1 + 1i36)37// Fool gccgo into thinking that these variables can change.38func NotCalled() {39 i++40 j++41 k++42 i8++43 j8++44 k8++45 i16++46 j16++47 k16++48 i32++49 j32++50 k32++51 i64++52 j64++53 k64++54 u++55 v++56 w++57 u8++58 v8++59 w8++60 u16++61 v16++62 w16++63 u32++64 v32++65 w32++66 u64++67 v64++68 w64++69 up++70 vp++71 wp++72 f += 173 g += 174 h += 175 f32 += 176 g32 += 177 h32 += 178 f64 += 179 g64 += 180 h64 += 181 c += 1 + 1i82 d += 1 + 1i83 e += 1 + 1i84 c64 += 1 + 1i85 d64 += 1 + 1i86 e64 += 1 + 1i87 c128 += 1 + 1i88 d128 += 1 + 1i89 e128 += 1 + 1i90}91var tmp interface{}92// We could assign to _ but the compiler optimizes it too easily.93func use(v interface{}) {94 tmp = v95}96// Verify error/no error for all types.97var errorTests = []ErrorTest{98 // All integer divide by zero should error.99 ErrorTest{"int 0/0", func() { use(i / j) }, "divide"},100 ErrorTest{"int8 0/0", func() { use(i8 / j8) }, "divide"},101 ErrorTest{"int16 0/0", func() { use(i16 / j16) }, "divide"},102 ErrorTest{"int32 0/0", func() { use(i32 / j32) }, "divide"},103 ErrorTest{"int64 0/0", func() { use(i64 / j64) }, "divide"},104 ErrorTest{"int 1/0", func() { use(k / j) }, "divide"},105 ErrorTest{"int8 1/0", func() { use(k8 / j8) }, "divide"},106 ErrorTest{"int16 1/0", func() { use(k16 / j16) }, "divide"},107 ErrorTest{"int32 1/0", func() { use(k32 / j32) }, "divide"},108 ErrorTest{"int64 1/0", func() { use(k64 / j64) }, "divide"},109 ErrorTest{"uint 0/0", func() { use(u / v) }, "divide"},110 ErrorTest{"uint8 0/0", func() { use(u8 / v8) }, "divide"},111 ErrorTest{"uint16 0/0", func() { use(u16 / v16) }, "divide"},112 ErrorTest{"uint32 0/0", func() { use(u32 / v32) }, "divide"},113 ErrorTest{"uint64 0/0", func() { use(u64 / v64) }, "divide"},114 ErrorTest{"uintptr 0/0", func() { use(up / vp) }, "divide"},115 ErrorTest{"uint 1/0", func() { use(w / v) }, "divide"},116 ErrorTest{"uint8 1/0", func() { use(w8 / v8) }, "divide"},117 ErrorTest{"uint16 1/0", func() { use(w16 / v16) }, "divide"},118 ErrorTest{"uint32 1/0", func() { use(w32 / v32) }, "divide"},119 ErrorTest{"uint64 1/0", func() { use(w64 / v64) }, "divide"},120 ErrorTest{"uintptr 1/0", func() { use(wp / vp) }, "divide"},121 // All float64ing divide by zero should not error.122 ErrorTest{"float64 0/0", func() { use(f / g) }, ""},123 ErrorTest{"float32 0/0", func() { use(f32 / g32) }, ""},124 ErrorTest{"float64 0/0", func() { use(f64 / g64) }, ""},125 ErrorTest{"float64 1/0", func() { use(h / g) }, ""},126 ErrorTest{"float32 1/0", func() { use(h32 / g32) }, ""},127 ErrorTest{"float64 1/0", func() { use(h64 / g64) }, ""},128 ErrorTest{"float64 inf/0", func() { use(inf / g64) }, ""},129 ErrorTest{"float64 -inf/0", func() { use(negInf / g64) }, ""},130 ErrorTest{"float64 nan/0", func() { use(nan / g64) }, ""},131 // All complex divide by zero should not error.132 ErrorTest{"complex 0/0", func() { use(c / d) }, ""},133 ErrorTest{"complex64 0/0", func() { use(c64 / d64) }, ""},134 ErrorTest{"complex128 0/0", func() { use(c128 / d128) }, ""},135 ErrorTest{"complex 1/0", func() { use(e / d) }, ""},136 ErrorTest{"complex64 1/0", func() { use(e64 / d64) }, ""},137 ErrorTest{"complex128 1/0", func() { use(e128 / d128) }, ""},138}139func error_(fn func()) (error string) {140 defer func() {141 if e := recover(); e != nil {142 error = e.(runtime.Error).Error()143 }144 }()145 fn()146 return ""147}148type FloatTest struct {149 f, g float64150 out float64151}152var float64Tests = []FloatTest{153 FloatTest{0, 0, nan},154 FloatTest{nan, 0, nan},155 FloatTest{inf, 0, inf},156 FloatTest{negInf, 0, negInf},...

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1import (2func TestError(t *testing.T) {3 t.Error("This is an error message")4}5--- FAIL: TestError (0.00s)6import (7func TestErrorf(t *testing.T) {8 t.Errorf("%s", fmt.Sprintf("This is an error message"))9}10--- FAIL: TestErrorf (0.00s)11import (12func TestFailNow(t *testing.T) {13 t.FailNow()14}15--- FAIL: TestFailNow (0.00s)16import (17func TestFail(t *testing.T) {18 t.Fail()19}20--- FAIL: TestFail (0.00s)21import (22func TestLog(t *testing.T) {23 t.Log("This is a

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1import "fmt"2func main() {3 t := test{}4 t.Error("Hello, playground")5}6import "fmt"7func main() {8 t := test{}9 t.Error("Hello, playground")10}11import "fmt"12func main() {13 t := test{}14 t.Error("Hello, playground")15}16import "fmt"17func main() {18 t := test{}19 t.Error("Hello, playground")20}21import "fmt"22func main() {23 t := test{}24 t.Error("Hello, playground")25}26import "fmt"27func main() {28 t := test{}29 t.Error("Hello, playground")30}31import "fmt"32func main() {33 t := test{}34 t.Error("Hello, playground")35}36import "fmt"37func main() {38 t := test{}39 t.Error("Hello, playground")40}41import "fmt"42func main() {43 t := test{}44 t.Error("Hello, playground")45}46import "fmt"47func main() {48 t := test{}49 t.Error("Hello, playground")50}51import "fmt"52func main() {53 t := test{}54 t.Error("Hello, playground")55}56import "fmt"57func main() {58 t := test{}59 t.Error("Hello, playground")60}

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1import (2func main() {3 t.Set(10)4 fmt.Println(t.Get())5 fmt.Println(t.Error())6}7import (8func main() {9 t.Set(10)10 fmt.Println(t.Get())11 fmt.Println(t.Error())12}

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Error

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1import "fmt"2import "errors"3func main() {4 err := errors.New("error occurred")5 fmt.Println(err)6}7import "fmt"8import "errors"9type MyError struct {10}11func (e *MyError) Error() string {12}13func main() {14 err := &MyError{"error occurred"}15 fmt.Println(err)16}17import "fmt"18import "errors"19type MyError struct {20}21func (e *MyError) Error() string {22}23func main() {24 err := &MyError{"error occurred"}25 fmt.Println(err.Error())26}27import "fmt"28import "errors"29type MyError struct {30}31func (e *MyError) Error() string {32}33func main() {34 err := &MyError{"error occurred"}35 fmt.Println(err.Error())36}37func (e *MyError) String() string {38 return fmt.Sprintf("Error: %s", e.Msg)39}40func main() {41 err := &MyError{"error occurred"}42 fmt.Println(err)43}44import "fmt"45import "errors"46type MyError struct {47}48func (e *MyError) Error() string {49}50func main() {51 err := &MyError{"error occurred"}52 fmt.Println(err.Error())53}54func (e *MyError) String() string {55 return fmt.Sprintf("Error: %s", e.Msg)56}57func main() {58 err := &MyError{"error occurred"}59 fmt.Println(err)60}61func (e *MyError) Format(s fmt.State, verb rune) {62 switch verb {63 if s.Flag('+') {64 fmt.Fprintf(s, "Error: %s", e.Msg)65 }66 fmt.Fprintf(s, e.Msg)67 fmt.Fprintf(s, "%

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1func main() {2 t := test{message: "Hello World"}3 t.Error()4}5import (6func main() {7 t := test{message: "Hello World"}8 fmt.Println(t.message)9}

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Error

Using AI Code Generation

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1import (2func main() {3 t := test.Test{}4 t.Set(10)5 fmt.Println(t.Error())6}

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Error

Using AI Code Generation

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1import "fmt"2import "testing"3func main() {4 t := testing.T{}5 fmt.Println(t.Error())6}

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Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.

LambdaTest Learning Hubs:

YouTube

You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.

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