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How to use TestLast method of td_test Package

Best Go-testdeep code snippet using td_test.TestLast

td_grep_test.go

Source:td_grep_test.go

...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},478			{"array", got},479			{"*slice", &sgot},480			{"*array", &got},481		}482		for _, tc := range testCases {483			t.Run(tc.name, func(t *testing.T) {484				checkOK(t, tc.got, td.Last(td.Lt(0), -1))485				checkOK(t, tc.got, td.Last(td.Not(td.Between(1, 3)), 0))486				checkOK(t, tc.got, td.Last(487					func(x int) bool { return (x & 1) == 0 },488					2))489				checkOK(t, tc.got, td.Last(490					func(x int64) bool { return (x & 1) != 0 },491					3),492					"int64 filter vs int items")493				checkOK(t, tc.got, td.Last(494					func(x any) bool { return (x.(int) & 1) == 0 },495					2),496					"any filter vs int items")497				checkError(t, tc.got,498					td.Last(td.Gt(666), "never reached"),499					expectedError{500						Message:  mustBe("item not found"),501						Path:     mustBe("DATA"),502						Got:      mustContain(`]int) (len=7 `),503						Expected: mustBe("Last(> 666)"),504					})505			})506		}507	})508	t.Run("struct", func(t *testing.T) {509		type person struct {510			ID   int64511			Name string512		}513		got := [...]person{514			{ID: 1, Name: "Joe"},515			{ID: 2, Name: "Bob"},516			{ID: 3, Name: "Alice"},517			{ID: 4, Name: "Brian"},518			{ID: 5, Name: "Britt"},519		}520		sgot := got[:]521		testCases := []struct {522			name string523			got  any524		}{525			{"slice", sgot},526			{"array", got},527			{"*slice", &sgot},528			{"*array", &got},529		}530		for _, tc := range testCases {531			t.Run(tc.name, func(t *testing.T) {532				checkOK(t, tc.got, td.Last(533					td.JSONPointer("/Name", td.HasPrefix("Br")),534					person{ID: 5, Name: "Britt"}))535				checkOK(t, tc.got, td.Last(536					func(p person) bool { return p.ID < 3 },537					person{ID: 2, Name: "Bob"}))538			})539		}540	})541	t.Run("interfaces", func(t *testing.T) {542		got := [...]any{-3, -2, -1, 0, 1, 2, 3}543		sgot := got[:]544		testCases := []struct {545			name string546			got  any547		}{548			{"slice", sgot},549			{"array", got},550			{"*slice", &sgot},551			{"*array", &got},552		}553		for _, tc := range testCases {554			t.Run(tc.name, func(t *testing.T) {555				checkOK(t, tc.got, td.Last(td.Lt(0), -1))556				checkOK(t, tc.got, td.Last(td.Not(td.Between(1, 3)), 0))557				checkOK(t, tc.got, td.Last(558					func(x int) bool { return (x & 1) == 0 },559					2))560				checkOK(t, tc.got, td.Last(561					func(x int64) bool { return (x & 1) != 0 },562					3),563					"int64 filter vs any/int items")564				checkOK(t, tc.got, td.Last(565					func(x any) bool { return (x.(int) & 1) == 0 },566					2),567					"any filter vs any/int items")568			})569		}570	})571	t.Run("interfaces error", func(t *testing.T) {572		got := [...]any{123, "foo", 456}573		sgot := got[:]574		testCases := []struct {575			name string576			got  any577		}{578			{"slice", sgot},579			{"array", got},580			{"*slice", &sgot},581			{"*array", &got},582		}583		for _, tc := range testCases {584			t.Run(tc.name, func(t *testing.T) {585				checkError(t, tc.got,586					td.Last(func(x int) bool { return false }, "never reached"),587					expectedError{588						Message:  mustBe("incompatible parameter type"),589						Path:     mustBe("DATA[1]"),590						Got:      mustBe("string"),591						Expected: mustBe("int"),592					})593			})594		}595	})596	t.Run("nil slice", func(t *testing.T) {597		var got []int598		testCases := []struct {599			name string600			got  any601		}{602			{"slice", got},603			{"*slice", &got},604		}605		for _, tc := range testCases {606			t.Run(tc.name, func(t *testing.T) {607				checkError(t, tc.got,608					td.Last(td.Gt(666), "never reached"),609					expectedError{610						Message:  mustBe("item not found"),611						Path:     mustBe("DATA"),612						Got:      mustBe("([]int) <nil>"),613						Expected: mustBe("Last(> 666)"),614					})615			})616		}617	})618	t.Run("nil pointer", func(t *testing.T) {619		checkError(t, (*[]int)(nil), td.Last(td.Ignore(), 33),620			expectedError{621				Message:  mustBe("nil pointer"),622				Path:     mustBe("DATA"),623				Got:      mustBe("nil *slice (*[]int type)"),624				Expected: mustBe("non-nil *slice OR *array"),625			})626	})627	t.Run("JSON", func(t *testing.T) {628		got := map[string]any{629			"values": []int{1, 2, 3, 4},630		}631		checkOK(t, got, td.JSON(`{"values": Last(Lt(3), 2)}`))632	})633	t.Run("errors", func(t *testing.T) {634		for _, filter := range []any{nil, 33} {635			checkError(t, "never tested",636				td.Last(filter, 42),637				expectedError{638					Message: mustBe("bad usage of Last operator"),639					Path:    mustBe("DATA"),640					Summary: mustBe("usage: Last(FILTER_FUNC|FILTER_TESTDEEP_OPERATOR, TESTDEEP_OPERATOR|EXPECTED_VALUE), FILTER_FUNC must be a function or FILTER_TESTDEEP_OPERATOR a TestDeep operator"),641				},642				"filter:", filter)643		}644		for _, filter := range []any{645			func() bool { return true },646			func(a, b int) bool { return true },647			func(a ...int) bool { return true },648		} {649			checkError(t, "never tested",650				td.Last(filter, 42),651				expectedError{652					Message: mustBe("bad usage of Last operator"),653					Path:    mustBe("DATA"),654					Summary: mustBe("usage: Last(FILTER_FUNC|FILTER_TESTDEEP_OPERATOR, TESTDEEP_OPERATOR|EXPECTED_VALUE), FILTER_FUNC must take only one non-variadic argument"),655				},656				"filter:", filter)657		}658		for _, filter := range []any{659			func(a int) {},660			func(a int) int { return 0 },661			func(a int) (bool, bool) { return true, true },662		} {663			checkError(t, "never tested",664				td.Last(filter, 42),665				expectedError{666					Message: mustBe("bad usage of Last operator"),667					Path:    mustBe("DATA"),668					Summary: mustBe("usage: Last(FILTER_FUNC|FILTER_TESTDEEP_OPERATOR, TESTDEEP_OPERATOR|EXPECTED_VALUE), FILTER_FUNC must return bool"),669				},670				"filter:", filter)671		}672		checkError(t, &struct{}{}, td.Last(td.Ignore(), 33),673			expectedError{674				Message:  mustBe("bad kind"),675				Path:     mustBe("DATA"),676				Got:      mustBe("*struct (*struct {} type)"),677				Expected: mustBe("slice OR array OR *slice OR *array"),678			})679		checkError(t, nil, td.Last(td.Ignore(), 33),680			expectedError{681				Message:  mustBe("bad kind"),682				Path:     mustBe("DATA"),683				Got:      mustBe("nil"),684				Expected: mustBe("slice OR array OR *slice OR *array"),685			})686	})687}688func TestLastString(t *testing.T) {689	test.EqualStr(t,690		td.Last(func(n int) bool { return true }, 33).String(),691		"Last(func(int) bool)")692	test.EqualStr(t, td.Last(td.Gt(0), 33).String(), "Last(> 0)")693	// Erroneous op694	test.EqualStr(t, td.Last(42, 33).String(), "Last(<ERROR>)")695}696func TestLastTypeBehind(t *testing.T) {697	equalTypes(t, td.Last(func(n int) bool { return true }, 33), []int{})698	equalTypes(t, td.Last(td.Gt("x"), "x"), []string{})699	// Erroneous op700	equalTypes(t, td.Last(42, 33), nil)701}...

TestLast

Using AI Code Generation

1import (2func main() {3	t.TestLast()4	fmt.Println("Hello World")5}6import (7func main() {8	t.TestFirst()9	fmt.Println("Hello World")10}11import "fmt"12type TD_test struct {13}14func (t *TD_test) TestFirst() {15	fmt.Println("TestFirst")16}17func (t *TD_test) TestLast() {18	fmt.Println("TestLast")19}

TestLast

Using AI Code Generation

1import "fmt"2import "test"3func main() {4    a.Add(1)5    a.Add(2)6    a.Add(3)7    fmt.Println(a.TestLast())8}9type Test struct {10}11func (t *Test) Add(i int) {12    t.data = append(t.data, i)13}14func (t *Test) TestLast() int {15    return t.data[len(t.data)-1]16}

TestLast

Using AI Code Generation

1import (2func main() {3    fmt.Println(testdata.TestLast())4}5import (6func main() {7    td := testdata.TestData{First: "First", Last: "Last"}8    fmt.Println(td.TestFirst())9}10import (11func main() {12    td := testdata.TestData{First: "First", Last: "Last"}13    fmt.Println(td.TestFirst())14    fmt.Println(td.TestLast())15}16import (17func main() {18    td := testdata.TestData{First: "First", Last: "Last"}19    fmt.Println(td.TestFirst())20    fmt.Println(td.TestLast())21    fmt.Println(td.TestFirstLast())22}23import (24func main() {25    td := testdata.TestData{First: "First", Last: "Last"}26    fmt.Println(td.TestFirst())27    fmt.Println(td

TestLast

Using AI Code Generation

1import (2func main() {3  fmt.Println(td_test.TestLast())4}5import (6func main() {7  fmt.Println(td_test.TestLast())8  fmt.Println(td_test2.TestLast())9}10import (11func main() {12  fmt.Println(td_test.TestLast())13}14import (15func main() {16  fmt.Println(td_test.TestLast())17}

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