// SPDX-License-Identifier: Apache-2.0

package <package>

import (
	"errors"
	"testing"

	"github.com/google/go-cmp/cmp"
)

func Test<FunctionName>(t *testing.T) {
	t.Parallel()

	// In-Got-Want
	type in struct {
		/* input fields */
	}

	type want struct {
		/* expected output fields */
		err error
	}

	// Table-Driven Testing
	tests := []struct {
		name string
		in   in
		want want
	}{
		{
			name: "case-description-1",
			in: in{
				/* input values */
			},
			want: want{
				/* expected output */
				err: nil,
			},
		},
		{
			name: "case-description-2",
			in: in{
				/* input values */
			},
			want: want{
				/* expected output */
				err: nil, // or specific error
			},
		},
		// add more cases as needed
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			// Arrange
			// additional setup as needed

			// Act
			got, err := <Function>(tt.in.<input>)

			// Assert
			if !errors.Is(err, tt.want.err) {
				t.Errorf("<Function>() error = %v, want err %v", err, tt.want.err)
			}
			if !cmp.Equal(got, tt.want.<value>) {
				t.Errorf("<Function>(%+v) = %v, want %v", tt.in, got, tt.want.<value>)
			}
		})
	}
}

// testFixture holds common test state and provides setup/teardown.
type testFixture struct {
	t      *testing.T
	// Add common fields for test state
	object *<Type>
}

// newTestFixture creates and initializes a test fixture.
func newTestFixture(t *testing.T) *testFixture {
	t.Helper()

	// Setup
	return &testFixture{
		t:      t,
		object: New<Type>(),
	}
}

// teardown cleans up resources after test completion.
func (f *testFixture) teardown() {
	f.t.Helper()

	// Teardown
	if f.object != nil {
		f.object.Close()
	}
}

func Test<FunctionName>WithFixture(t *testing.T) {
	t.Parallel()

	// Arrange
	f := newTestFixture(t)
	defer f.teardown()

	input := <input_value>

	// Act
	got, err := f.object.<Function>(input)

	// Assert
	if err != nil {
		t.Errorf("<Function>() unexpected error: %v", err)
	}
	if !cmp.Equal(got, <expected>) {
		t.Errorf("<Function>() = %v, want %v", got, <expected>)
	}
}

func Test<FunctionName>Error(t *testing.T) {
	t.Parallel()

	// In-Got-Want
	type in struct {
		/* invalid input fields */
	}

	type want struct {
		err error
	}

	// Table-Driven Testing
	tests := []struct {
		name string
		in   in
		want want
	}{
		{
			name: "nil-input-returns-error",
			in: in{
				/* nil or invalid input */
			},
			want: want{
				err: resource.Err<ErrorName>,
			},
		},
		{
			name: "invalid-value-returns-error",
			in: in{
				/* invalid value */
			},
			want: want{
				err: resource.Err<ErrorName>,
			},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			// Arrange
			// setup if needed

			// Act
			_, err := <Function>(tt.in.<input>)

			// Assert
			if !errors.Is(err, tt.want.err) {
				t.Errorf("<Function>() error = %v, want err %v", err, tt.want.err)
			}
		})
	}
}

func Test<FunctionName>BoundaryValues(t *testing.T) {
	t.Parallel()

	// In-Got-Want
	type in struct {
		input <input_type>
	}

	type want struct {
		value <output_type>
		err   error
	}

	// Table-Driven Testing
	tests := []struct {
		name string
		in   in
		want want
	}{
		{
			name: "minimum-value",
			in:   in{input: <MIN_VALUE>},
			want: want{value: /* expected */, err: nil},
		},
		{
			name: "maximum-value",
			in:   in{input: <MAX_VALUE>},
			want: want{value: /* expected */, err: nil},
		},
		{
			name: "zero-value",
			in:   in{input: 0},
			want: want{value: /* expected */, err: nil},
		},
		{
			name: "negative-value",
			in:   in{input: -1},
			want: want{value: /* expected */, err: nil},
		},
		{
			name: "overflow-value",
			in:   in{input: math.MaxFloat64},
			want: want{value: 0, err: resource.ErrOverflow},
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			// Arrange
			// setup if needed

			// Act
			got, err := <Function>(tt.in.input)

			// Assert
			if !errors.Is(err, tt.want.err) {
				t.Errorf("<Function>() error = %v, want err %v", err, tt.want.err)
			}
			if !cmp.Equal(got, tt.want.value) {
				t.Errorf("<Function>(%v) = %v, want %v", tt.in.input, got, tt.want.value)
			}
		})
	}
}

import (
	"encoding/json"
	"os"
	"path/filepath"
	"testing"

	"github.com/google/go-cmp/cmp"
)

// testCase represents a single test case loaded from JSON.
type testCase struct {
	Name string `json:"name"`
	In   struct {
		Input <input_type> `json:"input"`
	} `json:"in"`
	Want struct {
		Expected <output_type> `json:"expected"`
	} `json:"want"`
}

// testData represents the JSON test data structure.
type testData struct {
	Tests []testCase `json:"tests"`
}

func Test<FunctionName>DataDriven(t *testing.T) {
	t.Parallel()

	// Load test data from JSON file
	testdataPath := filepath.Join("testdata", "<function>_test.json")
	data, err := os.ReadFile(testdataPath)
	if err != nil {
		t.Fatalf("failed to read test data: %v", err)
	}

	var td testData
	if err := json.Unmarshal(data, &td); err != nil {
		t.Fatalf("failed to parse test data: %v", err)
	}

	for _, tc := range td.Tests {
		t.Run(tc.Name, func(t *testing.T) {
			// Arrange
			input := tc.In.Input
			expected := tc.Want.Expected

			// Act
			got, err := <Function>(input)

			// Assert
			if err != nil {
				t.Errorf("<Function>() unexpected error: %v", err)
			}
			if !cmp.Equal(got, expected) {
				t.Errorf("<Function>(%v) = %v, want %v", input, got, expected)
			}
		})
	}
}