How to use TestFirst method of td_test Package

Best Go-testdeep code snippet using td_test.TestFirst

td_grep_test.go

Source:td_grep_test.go

...232	test.EqualStr(t, td.Grep(td.Gt(0), []int{}).String(), "Grep(> 0)")233	// Erroneous op234	test.EqualStr(t, td.Grep(42, []int{}).String(), "Grep(<ERROR>)")235}236func TestFirst(t *testing.T) {237	t.Run("basic", func(t *testing.T) {238		got := [...]int{-3, -2, -1, 0, 1, 2, 3}239		sgot := got[:]240		testCases := []struct {241			name string242			got  any243		}{244			{"slice", sgot},245			{"array", got},246			{"*slice", &sgot},247			{"*array", &got},248		}249		for _, tc := range testCases {250			t.Run(tc.name, func(t *testing.T) {251				checkOK(t, tc.got, td.First(td.Gt(0), 1))252				checkOK(t, tc.got, td.First(td.Not(td.Between(-3, 2)), 3))253				checkOK(t, tc.got, td.First(254					func(x int) bool { return (x & 1) == 0 },255					-2))256				checkOK(t, tc.got, td.First(257					func(x int64) bool { return (x & 1) != 0 },258					-3),259					"int64 filter vs int items")260				checkOK(t, tc.got, td.First(261					func(x any) bool { return (x.(int) & 1) == 0 },262					-2),263					"any filter vs int items")264				checkError(t, tc.got,265					td.First(td.Gt(666), "never reached"),266					expectedError{267						Message:  mustBe("item not found"),268						Path:     mustBe("DATA"),269						Got:      mustContain(`]int) (len=7 `),270						Expected: mustBe("First(> 666)"),271					})272			})273		}274	})275	t.Run("struct", func(t *testing.T) {276		type person struct {277			ID   int64278			Name string279		}280		got := [...]person{281			{ID: 1, Name: "Joe"},282			{ID: 2, Name: "Bob"},283			{ID: 3, Name: "Alice"},284			{ID: 4, Name: "Brian"},285			{ID: 5, Name: "Britt"},286		}287		sgot := got[:]288		testCases := []struct {289			name string290			got  any291		}{292			{"slice", sgot},293			{"array", got},294			{"*slice", &sgot},295			{"*array", &got},296		}297		for _, tc := range testCases {298			t.Run(tc.name, func(t *testing.T) {299				checkOK(t, tc.got, td.First(300					td.JSONPointer("/Name", td.HasPrefix("Br")),301					person{ID: 4, Name: "Brian"}))302				checkOK(t, tc.got, td.First(303					func(p person) bool { return p.ID < 3 },304					person{ID: 1, Name: "Joe"}))305			})306		}307	})308	t.Run("interfaces", func(t *testing.T) {309		got := [...]any{-3, -2, -1, 0, 1, 2, 3}310		sgot := got[:]311		testCases := []struct {312			name string313			got  any314		}{315			{"slice", sgot},316			{"array", got},317			{"*slice", &sgot},318			{"*array", &got},319		}320		for _, tc := range testCases {321			t.Run(tc.name, func(t *testing.T) {322				checkOK(t, tc.got, td.First(td.Gt(0), 1))323				checkOK(t, tc.got, td.First(td.Not(td.Between(-3, 2)), 3))324				checkOK(t, tc.got, td.First(325					func(x int) bool { return (x & 1) == 0 },326					-2))327				checkOK(t, tc.got, td.First(328					func(x int64) bool { return (x & 1) != 0 },329					-3),330					"int64 filter vs any/int items")331				checkOK(t, tc.got, td.First(332					func(x any) bool { return (x.(int) & 1) == 0 },333					-2),334					"any filter vs any/int items")335			})336		}337	})338	t.Run("interfaces error", func(t *testing.T) {339		got := [...]any{123, "foo"}340		sgot := got[:]341		testCases := []struct {342			name string343			got  any344		}{345			{"slice", sgot},346			{"array", got},347			{"*slice", &sgot},348			{"*array", &got},349		}350		for _, tc := range testCases {351			t.Run(tc.name, func(t *testing.T) {352				checkError(t, tc.got,353					td.First(func(x int) bool { return false }, "never reached"),354					expectedError{355						Message:  mustBe("incompatible parameter type"),356						Path:     mustBe("DATA[1]"),357						Got:      mustBe("string"),358						Expected: mustBe("int"),359					})360			})361		}362	})363	t.Run("nil slice", func(t *testing.T) {364		var got []int365		testCases := []struct {366			name string367			got  any368		}{369			{"slice", got},370			{"*slice", &got},371		}372		for _, tc := range testCases {373			t.Run(tc.name, func(t *testing.T) {374				checkError(t, tc.got,375					td.First(td.Gt(666), "never reached"),376					expectedError{377						Message:  mustBe("item not found"),378						Path:     mustBe("DATA"),379						Got:      mustBe("([]int) <nil>"),380						Expected: mustBe("First(> 666)"),381					})382			})383		}384	})385	t.Run("nil pointer", func(t *testing.T) {386		checkError(t, (*[]int)(nil), td.First(td.Ignore(), 33),387			expectedError{388				Message:  mustBe("nil pointer"),389				Path:     mustBe("DATA"),390				Got:      mustBe("nil *slice (*[]int type)"),391				Expected: mustBe("non-nil *slice OR *array"),392			})393	})394	t.Run("JSON", func(t *testing.T) {395		got := map[string]any{396			"values": []int{1, 2, 3, 4},397		}398		checkOK(t, got, td.JSON(`{"values": First(Gt(2), 3)}`))399	})400	t.Run("errors", func(t *testing.T) {401		for _, filter := range []any{nil, 33} {402			checkError(t, "never tested",403				td.First(filter, 42),404				expectedError{405					Message: mustBe("bad usage of First operator"),406					Path:    mustBe("DATA"),407					Summary: mustBe("usage: First(FILTER_FUNC|FILTER_TESTDEEP_OPERATOR, TESTDEEP_OPERATOR|EXPECTED_VALUE), FILTER_FUNC must be a function or FILTER_TESTDEEP_OPERATOR a TestDeep operator"),408				},409				"filter:", filter)410		}411		for _, filter := range []any{412			func() bool { return true },413			func(a, b int) bool { return true },414			func(a ...int) bool { return true },415		} {416			checkError(t, "never tested",417				td.First(filter, 42),418				expectedError{419					Message: mustBe("bad usage of First operator"),420					Path:    mustBe("DATA"),421					Summary: mustBe("usage: First(FILTER_FUNC|FILTER_TESTDEEP_OPERATOR, TESTDEEP_OPERATOR|EXPECTED_VALUE), FILTER_FUNC must take only one non-variadic argument"),422				},423				"filter:", filter)424		}425		for _, filter := range []any{426			func(a int) {},427			func(a int) int { return 0 },428			func(a int) (bool, bool) { return true, true },429		} {430			checkError(t, "never tested",431				td.First(filter, 42),432				expectedError{433					Message: mustBe("bad usage of First operator"),434					Path:    mustBe("DATA"),435					Summary: mustBe("usage: First(FILTER_FUNC|FILTER_TESTDEEP_OPERATOR, TESTDEEP_OPERATOR|EXPECTED_VALUE), FILTER_FUNC must return bool"),436				},437				"filter:", filter)438		}439		checkError(t, &struct{}{}, td.First(td.Ignore(), 33),440			expectedError{441				Message:  mustBe("bad kind"),442				Path:     mustBe("DATA"),443				Got:      mustBe("*struct (*struct {} type)"),444				Expected: mustBe("slice OR array OR *slice OR *array"),445			})446		checkError(t, nil, td.First(td.Ignore(), 33),447			expectedError{448				Message:  mustBe("bad kind"),449				Path:     mustBe("DATA"),450				Got:      mustBe("nil"),451				Expected: mustBe("slice OR array OR *slice OR *array"),452			})453	})454}455func TestFirstString(t *testing.T) {456	test.EqualStr(t,457		td.First(func(n int) bool { return true }, 33).String(),458		"First(func(int) bool)")459	test.EqualStr(t, td.First(td.Gt(0), 33).String(), "First(> 0)")460	// Erroneous op461	test.EqualStr(t, td.First(42, 33).String(), "First(<ERROR>)")462}463func TestFirstTypeBehind(t *testing.T) {464	equalTypes(t, td.First(func(n int) bool { return true }, 33), []int{})465	equalTypes(t, td.First(td.Gt("x"), "x"), []string{})466	// Erroneous op467	equalTypes(t, td.First(42, 33), nil)468}469func TestLast(t *testing.T) {470	t.Run("basic", func(t *testing.T) {471		got := [...]int{-3, -2, -1, 0, 1, 2, 3}472		sgot := got[:]473		testCases := []struct {474			name string475			got  any476		}{477			{"slice", sgot},...

TestFirst

Using AI Code Generation

1import (2func main() {3    fmt.Println(td.TestFirst())4}5import (6func main() {7    fmt.Println(td.TestFirst())8}9import (10func main() {11    fmt.Println(td.TestFirst())12}13import (14func main() {15    fmt.Println(td.TestFirst())16}17import (18func main() {19    fmt.Println(td.TestFirst())20}21import (22func main() {23    fmt.Println(td.TestFirst())24}25import (26func main() {27    fmt.Println(td.TestFirst())28}29import (30func main() {31    fmt.Println(td.TestFirst())32}33import (34func main() {35    fmt.Println(td.TestFirst())36}37import (38func main() {39    fmt.Println(td.TestFirst())40}41import (42func main() {43    fmt.Println(td.TestFirst())44}

TestFirst

Using AI Code Generation

1import "github.com/td_test"2func main() {3td_test.TestFirst()4}5import "github.com/td_test"6func main() {7td_test.TestSecond()8}9import "github.com/td_test"10func main() {11td_test.TestThird()12}13import "github.com/td_test"14func main() {15td_test.TestFourth()16}17import "github.com/td_test"18func main() {19td_test.TestFifth()20}21import "github.com/td_test"22func main() {23td_test.TestSixth()24}25import "github.com/td_test"26func main() {27td_test.TestSeventh()28}29import "github.com/td_test"30func main() {31td_test.TestEighth()32}33import "github.com/td_test"34func main() {35td_test.TestNinth()36}37import "github.com/td_test"38func main() {39td_test.TestTenth()40}41import "github.com/td_test"42func main() {43td_test.TestEleventh()44}45import "github.com/td_test"46func main() {47td_test.TestTwelfth()48}

TestFirst

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello World")4    test.TestFirst()5}6import "fmt"7func TestFirst() {8    fmt.Println("TestFirst")9}

TestFirst

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello, playground")4    td.TestFirst(&t)5}6import (7func main() {8    fmt.Println("Hello, playground")9    td.TestFirst(&t)10}11import (12func main() {13    fmt.Println("Hello, playground")14    td.TestFirst(&t)15}16import (17func main() {18    fmt.Println("Hello, playground")19    td.TestFirst(&t)20}21import (22func main() {23    fmt.Println("Hello, playground")24    td.TestFirst(&t)25}26import (27func main() {28    fmt.Println("Hello, playground")29    td.TestFirst(&t)30}31import (32func main() {33    fmt.Println("Hello, playground")34    td.TestFirst(&t)35}36import (37func main() {38    fmt.Println("Hello, playground")39    td.TestFirst(&

TestFirst

Using AI Code Generation

1import (2func main() {3	fmt.Println("Hello, playground")4	result = td_test.TestFirst(10, 20)5	fmt.Println("result is ", result)6}

TestFirst

Using AI Code Generation

1import (2func main() {3  fmt.Println("Hello, world.")4  td_test.TestFirst()5}6import (7func main() {8  fmt.Println("Hello, world.")9  td_test.TestFirst()10}11import (12func main() {13  fmt.Println("Hello, world.")14  td_test.TestFirst()15}16import (17func main() {18  fmt.Println("Hello, world.")19  td_test.TestFirst()20}21import (22func main() {23  fmt.Println("Hello, world.")24  td_test.TestFirst()25}26import (27func main() {28  fmt.Println("Hello, world.")29  td_test.TestFirst()30}31import (32func main() {33  fmt.Println("Hello, world.")34  td_test.TestFirst()35}36import (37func main() {38  fmt.Println("Hello, world.")39  td_test.TestFirst()40}41import (42func main() {43  fmt.Println("Hello, world.")44  td_test.TestFirst()45}

TestFirst

Using AI Code Generation

1import (2func main() {3    fmt.Println(testdata.TestFirst())4}5import (6func TestSecond() string {7}8func TestThird() string {9    return testdata.TestFirst()10}11import (12func main() {13    fmt.Println(testdata2.TestSecond())14    fmt.Println(testdata2.TestThird())15}16import (17func TestFourth() string {18}19func TestFifth() string {20    return testdata.TestFirst()21}22import (23func main() {24    fmt.Println(subpackage.TestFourth())25    fmt.Println(subpackage.TestFifth())26}

TestFirst

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello World")4    test.TestFirst()5}6Go: How to use the init() function?7func init() {8}9import (10func init() {11    fmt.Println("init() function called")12}13func main() {14    fmt.Println("main() function called")15}16init() function called17main() function called18defer function_name()19import (20func main() {21    defer fmt.Println("World")22    fmt.Println("Hello")23}24Go: How to use the recover() function?25recover()26import (27func main() {28    defer func() {29        str := recover()30        fmt.Println(str)31    }()32    panic("PANIC")33}34Go: How to use the panic() function?35panic("Error Message")36import (37func main() {38    panic("PANIC")39    fmt.Println("Hello World")40}41main.main()42switch variable_name {43}

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