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How to use Catch method of td Package

Best Go-testdeep code snippet using td.Catch

td_catch.go

Source:td_catch.go

...9	"github.com/maxatome/go-testdeep/internal/ctxerr"10	"github.com/maxatome/go-testdeep/internal/types"11	"github.com/maxatome/go-testdeep/internal/util"12)13type tdCatch struct {14	tdSmugglerBase15	target reflect.Value16}17var _ TestDeep = &tdCatch{}18// summary(Catch): catches data on the fly before comparing it19// input(Catch): all20// Catch is a smuggler operator. It allows to copy data in target on21// the fly before comparing it as usual against expectedValue.22//23// target must be a non-nil pointer and data should be assignable to24// its pointed type. If BeLax config flag is true or called under [Lax]25// (and so [JSON]) operator, data should be convertible to its pointer26// type.27//28//	var id int6429//	if td.Cmp(t, CreateRecord("test"),30//	  td.JSON(`{"id": $1, "name": "test"}`, td.Catch(&id, td.NotZero()))) {31//	  t.Logf("Created record ID is %d", id)32//	}33//34// It is really useful when used with [JSON] operator and/or [tdhttp] helper.35//36//	var id int6437//	ta := tdhttp.NewTestAPI(t, api.Handler).38//	  PostJSON("/item", `{"name":"foo"}`).39//	  CmpStatus(http.StatusCreated).40//	  CmpJSONBody(td.JSON(`{"id": $1, "name": "foo"}`, td.Catch(&id, td.Gt(0))))41//	if !ta.Failed() {42//	  t.Logf("Created record ID is %d", id)43//	}44//45// If you need to only catch data without comparing it, use [Ignore]46// operator as expectedValue as in:47//48//	var id int6449//	if td.Cmp(t, CreateRecord("test"),50//	  td.JSON(`{"id": $1, "name": "test"}`, td.Catch(&id, td.Ignore()))) {51//	  t.Logf("Created record ID is %d", id)52//	}53//54// TypeBehind method returns the [reflect.Type] of expectedValue,55// except if expectedValue is a [TestDeep] operator. In this case, it56// delegates TypeBehind() to the operator, but if nil is returned by57// this call, the dereferenced [reflect.Type] of target is returned.58//59// [tdhttp]: https://pkg.go.dev/github.com/maxatome/go-testdeep/helpers/tdhttp60func Catch(target, expectedValue any) TestDeep {61	vt := reflect.ValueOf(target)62	c := tdCatch{63		tdSmugglerBase: newSmugglerBase(expectedValue),64		target:         vt,65	}66	if vt.Kind() != reflect.Ptr || vt.IsNil() || !vt.Elem().CanSet() {67		c.err = ctxerr.OpBadUsage("Catch", "(NON_NIL_PTR, EXPECTED_VALUE)", target, 1, true)68		return &c69	}70	if !c.isTestDeeper {71		c.expectedValue = reflect.ValueOf(expectedValue)72	}73	return &c74}75func (c *tdCatch) Match(ctx ctxerr.Context, got reflect.Value) *ctxerr.Error {76	if c.err != nil {77		return ctx.CollectError(c.err)78	}79	if targetType := c.target.Elem().Type(); !got.Type().AssignableTo(targetType) {80		if !ctx.BeLax || !types.IsConvertible(got, targetType) {81			if ctx.BooleanError {82				return ctxerr.BooleanError83			}84			return ctx.CollectError(ctxerr.TypeMismatch(got.Type(), c.target.Elem().Type()))85		}86		c.target.Elem().Set(got.Convert(targetType))87	} else {88		c.target.Elem().Set(got)89	}90	return deepValueEqual(ctx, got, c.expectedValue)91}92func (c *tdCatch) String() string {93	if c.err != nil {94		return c.stringError()95	}96	if c.isTestDeeper {97		return c.expectedValue.Interface().(TestDeep).String()98	}99	return util.ToString(c.expectedValue)100}101func (c *tdCatch) TypeBehind() reflect.Type {102	if c.err != nil {103		return nil104	}105	if c.isTestDeeper {106		if typ := c.expectedValue.Interface().(TestDeep).TypeBehind(); typ != nil {107			return typ108		}109		// Operator unknown type behind, fallback on target dereferenced type110		return c.target.Type().Elem()111	}112	if c.expectedValue.IsValid() {113		return c.expectedValue.Type()114	}115	return nil...

td_catch_test.go

Source:td_catch_test.go

...8	"testing"9	"github.com/maxatome/go-testdeep/internal/test"10	"github.com/maxatome/go-testdeep/td"11)12func TestCatch(t *testing.T) {13	var num int14	checkOK(t, 12, td.Catch(&num, 12))15	test.EqualInt(t, num, 12)16	var num64 int6417	checkError(t, 12, td.Catch(&num64, 12),18		expectedError{19			Message:  mustBe("type mismatch"),20			Got:      mustBe("int"),21			Expected: mustBe("int64"),22		})23	checkOK(t, 12, td.Lax(td.Catch(&num64, 12)))24	test.EqualInt(t, int(num64), 12)25	// Lax not needed for interfaces26	var val any27	if checkOK(t, 12, td.Catch(&val, 12)) {28		if n, ok := val.(int); ok {29			test.EqualInt(t, n, 12)30		} else {31			t.Errorf("val is not an int but a %T", val)32		}33	}34	//35	// Bad usages36	checkError(t, "never tested",37		td.Catch(12, 28),38		expectedError{39			Message: mustBe("bad usage of Catch operator"),40			Path:    mustBe("DATA"),41			Summary: mustBe("usage: Catch(NON_NIL_PTR, EXPECTED_VALUE), but received int as 1st parameter"),42		})43	checkError(t, "never tested",44		td.Catch(nil, 28),45		expectedError{46			Message: mustBe("bad usage of Catch operator"),47			Path:    mustBe("DATA"),48			Summary: mustBe("usage: Catch(NON_NIL_PTR, EXPECTED_VALUE), but received nil as 1st parameter"),49		})50	checkError(t, "never tested",51		td.Catch((*int)(nil), 28),52		expectedError{53			Message: mustBe("bad usage of Catch operator"),54			Path:    mustBe("DATA"),55			Summary: mustBe("usage: Catch(NON_NIL_PTR, EXPECTED_VALUE), but received *int (ptr) as 1st parameter"),56		})57	//58	// String59	test.EqualStr(t, td.Catch(&num, 12).String(), "12")60	test.EqualStr(t,61		td.Catch(&num, td.Gt(4)).String(),62		td.Gt(4).String())63	test.EqualStr(t, td.Catch(&num, nil).String(), "nil")64	// Erroneous op65	test.EqualStr(t, td.Catch(nil, 28).String(), "Catch(<ERROR>)")66}67func TestCatchTypeBehind(t *testing.T) {68	var num int69	equalTypes(t, td.Catch(&num, 8), 0)70	equalTypes(t, td.Catch(&num, td.Gt(4)), 0)71	equalTypes(t, td.Catch(&num, td.Ignore()), 0) // fallback on *target72	equalTypes(t, td.Catch(&num, nil), nil)73	// Erroneous op74	equalTypes(t, td.Catch(nil, 28), nil)75}...

api_list_test.go

Source:api_list_test.go

...35					 "long_url": "$longUrl",36					 "expires_on": "$expiresOn",37					 "created_at": "$createdAt"38				 }`,39				td.Tag("slug", td.Catch(&slug, td.Re("[A-Za-z0-9]{8}"))),40				td.Tag("shortUrl", td.Catch(&shortUrl, td.Ignore())),41				td.Tag("longUrl", td.Catch(&longUrl, "https://www.cloudflare.com")),42				td.Tag("expiresOn", td.Nil()),43				td.Tag("createdAt", td.Smuggle(parseDateTime, td.Catch(&createdAt, td.Ignore()))),44			),45		)46	testAPI.Get("/api/v1/shorturls").47		CmpStatus(http.StatusOK).48		CmpJSONBody(49			td.JSON(50				`[51				   {52						 "short_url": "$shortUrl",53						 "slug": "$slug",54						 "long_url": "$longUrl",55						 "expires_on": "$expiresOn",56						 "created_at": "$createdAt"57					 }...

Catch

Using AI Code Generation

1import (2func main() {3	xlFile, err := xlsx.OpenFile(excelFileName)4	if err != nil {5		log.Fatal(err)6	}7	for _, sheet := range xlFile.Sheets {8		for _, row := range sheet.Rows {9			for _, cell := range row.Cells {10				text, _ := cell.FormattedValue()11				fmt.Printf("%s\n", text)12			}13		}14	}15}

Catch

Using AI Code Generation

1import (2func main() {3	request := gorequest.New()4		End()5	if errs != nil {6		fmt.Println(errs)7	}8	time.Sleep(100 * time.Millisecond)9	if err != nil {10		fmt.Println(err)11	}12	defer res.Body.Close()13	body, err1 := ioutil.ReadAll(res.Body)14	if err1 != nil {15		fmt.Println(err1)16	}17	fmt.Println(string(body))18}

Catch

Using AI Code Generation

1import (2func main() {3 defer func() {4 if r := recover(); r != nil {5 fmt.Println("Recovered in f", r)6 }7 }()

Catch

Using AI Code Generation

1import (2func main() {3	xlFile, err := xlsx.OpenFile(excelFileName)4	if err != nil {5		fmt.Println(err)6		os.Exit(1)7	}8	value, err := cell.String()9	if err != nil {10		log.Fatal(err)11	}12	fmt.Println(value)13	fmt.Println(cell.Value)14	floatValue, err := cell.Float()15	if err != nil {16		log.Fatal(err)17	}18	fmt.Println(floatValue)19	intValue, err := cell.Int()20	if err != nil {21		log.Fatal(err)22	}23	fmt.Println(intValue)24	fmt.Println(formula)25	style := cell.GetStyle()26	fmt.Println(style)27	numberFormat := cell.GetNumberFormat()28	fmt.Println(numberFormat)29	fmt.Println(hyperlink)30	fmt.Println(comment)31	fmt.Println(richText)32	cellType := cell.Type()33	fmt.Println(cellType)34	hidden := cell.IsHidden()35	fmt.Println(hidden)36	merged := cell.IsMerged()37	fmt.Println(merged)38	fmt.Println(merge)39	row = cell.GetRow()40	fmt.Println(row)41	column := cell.GetColumn()42	fmt.Println(column)

Catch

Using AI Code Generation

1import (2func main() {3	defer func() {4		if r := recover(); r != nil {5			fmt.Println("Recover")6			fmt.Println("Recovered in f", r)7		}8	}()9	defer func() {10		if r := recover(); r != nil {11			fmt.Println("Recover")12			fmt.Println("Recovered in g", r)13		}14	}()15	defer func() {16		if r := recover(); r != nil {17			fmt.Println("Recover")18			fmt.Println("Recovered in h", r)19		}20	}()21	fmt.Println("Start")22	f()23	fmt.Println("End")24}25func f() {26	fmt.Println("f:Start")27	g()28	fmt.Println("f:End")29}30func g() {31	fmt.Println("g:Start")32	h()33	fmt.Println("g:End")34}35func h() {36	fmt.Println("h:Start")37	panic("Panic")38	fmt.Println("h:End")39}

Catch

Using AI Code Generation

1import (2func main() {3	resp, err := http.Get(url)4	if err != nil {5		fmt.Println("Error:", err)6		os.Exit(1)7	}8	robots, err := ioutil.ReadAll(resp.Body)9	resp.Body.Close()10	if err != nil {11		fmt.Println("Error:", err)12		os.Exit(1)13	}14	fmt.Printf("%s", robots)15	fmt.Println("Time:", time.Now())16}

Catch

Using AI Code Generation

1import (2func main() {3	if err != nil {4		fmt.Println(err)5	}6	defer resp.Body.Close()7	body, err := ioutil.ReadAll(resp.Body)8	if err != nil {9		fmt.Println(err)10	}11	re := regexp.MustCompile(`(?s)<div class="cb-col cb-col-25 cb-mtch-blk">(.+?)</div>`)12	match := re.FindAllString(string(body), -1)13	for _, v := range match {14		re1 := regexp.MustCompile(`(?s)<a href="(.+?)">(.+?)</a>`)15		match1 := re1.FindAllStringSubmatch(v, -1)16		for _, v1 := range match1 {17			fmt.Println(v1[2])18		}19	}20}

Catch

Using AI Code Generation

1import (2func (td *td) Catch() {3	fmt.Println("Caught")4}5type td struct {6}7func main() {8	td.Catch()9	fmt.Println("td type is ", reflect.TypeOf(td).Name())10	Catch()11	fmt.Println("Catch type is ", reflect.TypeOf(Catch).Name())12	Catch()13	fmt.Println("Catch type is ", reflect.TypeOf(Catch).Name())14	Catch()15	fmt.Println("Catch type is ", reflect.TypeOf(Catch).Name())16}17func Catch() {18	fmt.Println("Caught")19}20import (21func (td *td) Catch() {22	fmt.Println("Caught")23}24type td struct {25}26func main() {27	td.Catch()28	fmt.Println("td type is ", reflect.TypeOf(td).Name())29	Catch()30	fmt.Println("Catch type is ", reflect.TypeOf(Catch).Name())31	Catch()32	fmt.Println("Catch type is ", reflect.TypeOf(Catch).Name())33	Catch()34	fmt.Println("Catch type is ", reflect.TypeOf(Catch).Name())35}36func Catch() {37	fmt.Println("Caught")38}39import (

Catch

Using AI Code Generation

1import "fmt"2func main() {3 catch := td.Catch(func() {4 td.Throw(td.Exception("Exception"))5 })6 fmt.Println(catch)7}

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