// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0

package internal

import (
	"bytes"
	"fmt"
	"go/parser"
	"go/token"
	"os"
	"path/filepath"
	"testing"

	"github.com/spf13/cobra"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"go.opentelemetry.io/collector/component"
)

func TestNewCommand(t *testing.T) {
	cmd, err := NewCommand()
	require.NoError(t, err)

	assert.NotNil(t, cmd)
	assert.IsType(t, &cobra.Command{}, cmd)
	assert.Equal(t, "mdatagen", cmd.Use)
	assert.True(t, cmd.SilenceUsage)
}

func TestRunContents(t *testing.T) {
	tests := []struct {
		yml                  string
		wantMetricsGenerated bool
		// TODO: we should add one more flag for logs builder
		wantEventsGenerated             bool
		wantMetricsContext              bool
		wantLogsGenerated               bool
		wantConfigGenerated             bool
		wantTelemetryGenerated          bool
		wantResourceAttributesGenerated bool
		wantReadmeGenerated             bool
		wantStatusGenerated             bool
		wantComponentTestGenerated      bool
		wantGoleakIgnore                bool
		wantGoleakSkip                  bool
		wantGoleakSetup                 bool
		wantGoleakTeardown              bool
		wantErr                         bool
		wantOrderErr                    bool
		wantAttributes                  []string
	}{
		{
			yml:     "invalid.yaml",
			wantErr: true,
		},
		{
			yml:          "unsorted_rattr.yaml",
			wantOrderErr: true,
		},
		{
			yml:                        "basic_connector.yaml",
			wantErr:                    false,
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "basic_receiver.yaml",
			wantErr:                    false,
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
			wantLogsGenerated:          true,
		},
		{
			yml:                 "basic_pkg.yaml",
			wantErr:             false,
			wantStatusGenerated: false,
			wantReadmeGenerated: true,
		},
		{
			yml:                        "metrics_and_type.yaml",
			wantMetricsGenerated:       true,
			wantConfigGenerated:        true,
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                             "resource_attributes_only.yaml",
			wantConfigGenerated:             true,
			wantStatusGenerated:             true,
			wantResourceAttributesGenerated: true,
			wantReadmeGenerated:             true,
			wantComponentTestGenerated:      true,
			wantLogsGenerated:               true,
		},
		{
			yml:                        "status_only.yaml",
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "with_tests_receiver.yaml",
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
			wantLogsGenerated:          true,
		},
		{
			yml:                        "with_tests_exporter.yaml",
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "with_tests_processor.yaml",
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "with_tests_extension.yaml",
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "with_tests_connector.yaml",
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "with_goleak_ignores.yaml",
			wantStatusGenerated:        true,
			wantGoleakIgnore:           true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "with_goleak_skip.yaml",
			wantStatusGenerated:        true,
			wantGoleakSkip:             true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "with_goleak_setup.yaml",
			wantStatusGenerated:        true,
			wantGoleakSetup:            true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "with_goleak_teardown.yaml",
			wantStatusGenerated:        true,
			wantGoleakTeardown:         true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "with_telemetry.yaml",
			wantStatusGenerated:        true,
			wantTelemetryGenerated:     true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
			wantAttributes:             []string{"name"},
			wantLogsGenerated:          true,
		},
		{
			yml:                        "invalid_telemetry_missing_value_type_for_histogram.yaml",
			wantErr:                    true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "async_metric.yaml",
			wantMetricsGenerated:       true,
			wantConfigGenerated:        true,
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "custom_generated_package_name.yaml",
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
			wantLogsGenerated:          true,
		},
		{
			yml:                        "with_optional_attribute.yaml",
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantMetricsGenerated:       true,
			wantLogsGenerated:          true,
			wantConfigGenerated:        true,
			wantComponentTestGenerated: true,
		},
		{
			yml:                        "events/basic_event.yaml",
			wantStatusGenerated:        true,
			wantReadmeGenerated:        true,
			wantComponentTestGenerated: true,
			wantConfigGenerated:        true,
			wantEventsGenerated:        true,
			wantLogsGenerated:          true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.yml, func(t *testing.T) {
			tmpdir := filepath.Join(t.TempDir(), "shortname")
			err := os.MkdirAll(tmpdir, 0o750)
			require.NoError(t, err)
			ymlContent, err := os.ReadFile(filepath.Join("testdata", tt.yml))
			require.NoError(t, err)
			metadataFile := filepath.Join(tmpdir, "metadata.yaml")
			require.NoError(t, os.WriteFile(metadataFile, ymlContent, 0o600))
			require.NoError(t, os.WriteFile(filepath.Join(tmpdir, "empty.go"), []byte("package shortname"), 0o600))
			require.NoError(t, os.WriteFile(filepath.Join(tmpdir, "go.mod"), []byte("module shortname"), 0o600))
			require.NoError(t, os.WriteFile(filepath.Join(tmpdir, "README.md"), []byte(`
<!-- status autogenerated section -->
foo
<!-- end autogenerated section -->`), 0o600))
			md, err := LoadMetadata(metadataFile)
			if tt.wantErr {
				require.Error(t, err)
				return
			}
			require.NoError(t, err)
			generatedPackageDir := filepath.Join("internal", md.GeneratedPackageName)
			require.NoError(t, os.MkdirAll(filepath.Join(tmpdir, generatedPackageDir), 0o700))
			require.NoError(t, os.WriteFile(filepath.Join(tmpdir, generatedPackageDir, "generated_status.go"), []byte("status"), 0o600))
			require.NoError(t, os.WriteFile(filepath.Join(tmpdir, generatedPackageDir, "generated_telemetry_test.go"), []byte("test"), 0o600))
			require.NoError(t, os.WriteFile(filepath.Join(tmpdir, generatedPackageDir, "generated_component_test.go"), []byte("test"), 0o600))

			err = run(metadataFile)
			if tt.wantOrderErr {
				require.Error(t, err)
				require.Contains(t, err.Error(), "metadata.yaml ordering check failed")
				return
			}
			require.NoError(t, err)

			var contents []byte
			if tt.wantMetricsGenerated {
				require.FileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_metrics.go"))
				require.FileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_metrics_test.go"))
				require.FileExists(t, filepath.Join(tmpdir, "documentation.md"))
				if len(tt.wantAttributes) > 0 {
					contents, err = os.ReadFile(filepath.Join(tmpdir, "documentation.md")) //nolint:gosec
					require.NoError(t, err)
					for _, attr := range tt.wantAttributes {
						require.Contains(t, string(contents), attr)
					}
				}
				contents, err = os.ReadFile(filepath.Join(tmpdir, generatedPackageDir, "generated_metrics.go")) //nolint:gosec
				require.NoError(t, err)
				if tt.wantMetricsContext {
					require.Contains(t, string(contents), "\"context\"")
				} else {
					require.NotContains(t, string(contents), "\"context\"")
				}
			} else {
				require.NoFileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_metrics.go"))
				require.NoFileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_metrics_test.go"))
			}

			if tt.wantLogsGenerated {
				require.FileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_logs.go"))
				require.FileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_logs_test.go"))
			} else {
				require.NoFileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_logs.go"))
				require.NoFileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_logs_test.go"))
			}

			if tt.wantConfigGenerated {
				require.FileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_config.go"))
				require.FileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_config_test.go"))
			} else {
				require.NoFileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_config.go"))
				require.NoFileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_config_test.go"))
			}

			if tt.wantTelemetryGenerated {
				require.FileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_telemetry.go"))
				require.FileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_telemetry_test.go"))
				require.FileExists(t, filepath.Join(tmpdir, "documentation.md"))
				contents, err = os.ReadFile(filepath.Join(tmpdir, generatedPackageDir, "generated_telemetry.go")) //nolint:gosec
				require.NoError(t, err)
				if tt.wantMetricsContext {
					require.Contains(t, string(contents), "\"context\"")
				} else {
					require.NotContains(t, string(contents), "\"context\"")
				}
			} else {
				require.NoFileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_telemetry.go"))
			}

			if !tt.wantMetricsGenerated && !tt.wantTelemetryGenerated && !tt.wantResourceAttributesGenerated && !tt.wantEventsGenerated {
				require.NoFileExists(t, filepath.Join(tmpdir, "documentation.md"))
			}

			if tt.wantStatusGenerated {
				require.FileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_status.go"))
			} else {
				require.NoFileExists(t, filepath.Join(tmpdir, generatedPackageDir, "generated_status.go"))
			}

			contents, err = os.ReadFile(filepath.Join(tmpdir, "README.md")) //nolint:gosec
			require.NoError(t, err)
			if tt.wantReadmeGenerated {
				require.NotContains(t, string(contents), "foo")
			} else {
				require.Contains(t, string(contents), "foo")
			}

			if tt.wantComponentTestGenerated {
				require.FileExists(t, filepath.Join(tmpdir, "generated_component_test.go"))
				contents, err = os.ReadFile(filepath.Join(tmpdir, "generated_component_test.go")) //nolint:gosec
				require.NoError(t, err)
				require.Contains(t, string(contents), "func Test")
				_, err = parser.ParseFile(token.NewFileSet(), "", contents, parser.DeclarationErrors)
				require.NoError(t, err)
			} else {
				require.NoFileExists(t, filepath.Join(tmpdir, "generated_component_test.go"))
			}

			require.FileExists(t, filepath.Join(tmpdir, "generated_package_test.go"))
			contents, err = os.ReadFile(filepath.Join(tmpdir, "generated_package_test.go")) //nolint:gosec
			require.NoError(t, err)
			require.Contains(t, string(contents), "func TestMain")
			_, err = parser.ParseFile(token.NewFileSet(), "", contents, parser.DeclarationErrors)
			require.NoError(t, err)

			if tt.wantGoleakSkip {
				require.Contains(t, string(contents), "skipping goleak test")
			} else {
				require.NotContains(t, string(contents), "skipping goleak test")
			}

			if tt.wantGoleakIgnore {
				require.Contains(t, string(contents), "IgnoreTopFunction")
				require.Contains(t, string(contents), "IgnoreAnyFunction")
			} else {
				require.NotContains(t, string(contents), "IgnoreTopFunction")
				require.NotContains(t, string(contents), "IgnoreAnyFunction")
			}

			if tt.wantGoleakSetup {
				require.Contains(t, string(contents), "setupFunc")
			} else {
				require.NotContains(t, string(contents), "setupFunc")
			}

			if tt.wantGoleakTeardown {
				require.Contains(t, string(contents), "teardownFunc")
			} else {
				require.NotContains(t, string(contents), "teardownFunc")
			}
		})
	}
}

func TestRun(t *testing.T) {
	type args struct {
		ymlPath string
	}
	tests := []struct {
		name    string
		args    args
		wantErr bool
	}{
		{
			name:    "no argument",
			args:    args{""},
			wantErr: true,
		},
		{
			name:    "no such file",
			args:    args{"/no/such/file"},
			wantErr: true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			err := run(tt.args.ymlPath)
			if !tt.wantErr {
				require.NoError(t, err, "run()")
			} else {
				require.Error(t, err)
			}
		})
	}
}

func TestInlineReplace(t *testing.T) {
	tests := []struct {
		name           string
		markdown       string
		outputFile     string
		componentClass string
		warnings       []string
		stability      map[component.StabilityLevel][]string
		deprecation    map[string]DeprecationInfo
		distros        []string
		codeowners     *Codeowners
		githubProject  string
	}{
		{
			name: "readme with empty status",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile:     "readme_with_status.md",
			componentClass: "receiver",
			distros:        []string{"contrib"},
			githubProject:  "open-telemetry/opentelemetry-collector",
		},
		{
			name: "readme with status for extension",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile:     "readme_with_status_extension.md",
			componentClass: "extension",
			distros:        []string{"contrib"},
		},
		{
			name: "readme with status for converter",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile:     "readme_with_status_converter.md",
			componentClass: "converter",
			distros:        []string{"contrib"},
		},
		{
			name: "readme with status for provider",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile:     "readme_with_status_provider.md",
			componentClass: "provider",
			distros:        []string{"contrib"},
		},
		{
			name: "readme with status with codeowners and seeking new",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile:     "readme_with_status_codeowners_and_seeking_new.md",
			componentClass: "receiver",
			distros:        []string{"contrib"},
			codeowners: &Codeowners{
				Active:     []string{"foo"},
				SeekingNew: true,
			},
		},
		{
			name: "readme with status with codeowners and emeritus",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile:     "readme_with_status_codeowners_and_emeritus.md",
			componentClass: "receiver",
			distros:        []string{"contrib"},
			codeowners: &Codeowners{
				Active:   []string{"foo"},
				Emeritus: []string{"bar"},
			},
		},
		{
			name: "readme with status with codeowners",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile:     "readme_with_status_codeowners.md",
			componentClass: "receiver",
			distros:        []string{"contrib"},
			codeowners: &Codeowners{
				Active: []string{"open-telemetry/collector-approvers"},
			},
		},
		{
			name: "readme with status table",
			markdown: `# Some component

<!-- status autogenerated section -->
| Status                   |           |
| ------------------------ |-----------|
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile:     "readme_with_status.md",
			componentClass: "receiver",
			distros:        []string{"contrib"},
			githubProject:  "open-telemetry/opentelemetry-collector",
		},
		{
			name: "readme with no status",
			markdown: `# Some component

Some info about a component
`,
			outputFile: "readme_without_status.md",
			distros:    []string{"contrib"},
		},
		{
			name: "component with warnings",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
### warnings
Some warning there.
`,
			outputFile: "readme_with_warnings.md",
			warnings:   []string{"warning1"},
			distros:    []string{"contrib"},
		},
		{
			name: "readme with multiple signals",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile: "readme_with_multiple_signals.md",
			stability: map[component.StabilityLevel][]string{
				component.StabilityLevelBeta:  {"metrics"},
				component.StabilityLevelAlpha: {"logs"},
			},
			distros: []string{"contrib"},
		},
		{
			name: "readme with multiple signals and deprecation",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile: "readme_with_multiple_signals_and_deprecation.md",
			stability: map[component.StabilityLevel][]string{
				component.StabilityLevelBeta:       {"metrics"},
				component.StabilityLevelAlpha:      {"logs"},
				component.StabilityLevelDeprecated: {"traces"},
			},
			deprecation: DeprecationMap{
				"traces": DeprecationInfo{
					Date:      "2025-02-05",
					Migration: "no migration needed",
				},
			},
			distros: []string{"contrib"},
		},
		{
			name: "readme with cmd class",
			markdown: `# Some component

<!-- status autogenerated section -->
<!-- end autogenerated section -->

Some info about a component
`,
			outputFile: "readme_with_cmd_class.md",
			stability: map[component.StabilityLevel][]string{
				component.StabilityLevelBeta:  {"metrics"},
				component.StabilityLevelAlpha: {"logs"},
			},
			componentClass: "cmd",
			distros:        []string{},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			stability := map[component.StabilityLevel][]string{component.StabilityLevelBeta: {"metrics"}}
			if len(tt.stability) > 0 {
				stability = tt.stability
			}
			md := Metadata{
				GithubProject:   tt.githubProject,
				Type:            "foo",
				ShortFolderName: "foo",
				Status: &Status{
					DisableCodeCov: true,
					Stability:      stability,
					Distributions:  tt.distros,
					Class:          tt.componentClass,
					Warnings:       tt.warnings,
					Codeowners:     tt.codeowners,
					Deprecation:    tt.deprecation,
				},
			}
			tmpdir := t.TempDir()

			readmeFile := filepath.Join(tmpdir, "README.md")
			require.NoError(t, os.WriteFile(readmeFile, []byte(tt.markdown), 0o600))

			err := inlineReplace("templates/readme.md.tmpl", readmeFile, md, statusStart, statusEnd, "metadata")
			require.NoError(t, err)

			require.FileExists(t, filepath.Join(tmpdir, "README.md"))
			got, err := os.ReadFile(filepath.Join(tmpdir, "README.md")) //nolint:gosec
			require.NoError(t, err)
			got = bytes.ReplaceAll(got, []byte("\r\n"), []byte("\n"))
			expected, err := os.ReadFile(filepath.Join("testdata", tt.outputFile))
			require.NoError(t, err)
			expected = bytes.ReplaceAll(expected, []byte("\r\n"), []byte("\n"))
			fmt.Println(string(got))
			fmt.Println(string(expected))
			require.Equal(t, string(expected), string(got))
		})
	}
}

func TestGenerateStatusMetadata(t *testing.T) {
	tests := []struct {
		name     string
		output   string
		md       Metadata
		expected string
	}{
		{
			name: "foo component with beta status",
			md: Metadata{
				Type: "foo",
				Status: &Status{
					Stability: map[component.StabilityLevel][]string{
						component.StabilityLevelBeta: {"metrics"},
					},
					Distributions: []string{"contrib"},
					Class:         "receiver",
				},
			},
			expected: `// Code generated by mdatagen. DO NOT EDIT.

package metadata

import (
	"go.opentelemetry.io/collector/component"
)

var (
	Type      = component.MustNewType("foo")
	ScopeName = ""
)

const (
	MetricsStability = component.StabilityLevelBeta
)
`,
		},
		{
			name: "foo component with alpha status",
			md: Metadata{
				Type: "foo",
				Status: &Status{
					Stability: map[component.StabilityLevel][]string{
						component.StabilityLevelAlpha: {"metrics"},
					},
					Distributions: []string{"contrib"},
					Class:         "receiver",
				},
			},
			expected: `// Code generated by mdatagen. DO NOT EDIT.

package metadata

import (
	"go.opentelemetry.io/collector/component"
)

var (
	Type      = component.MustNewType("foo")
	ScopeName = ""
)

const (
	MetricsStability = component.StabilityLevelAlpha
)
`,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			tmpdir := t.TempDir()
			err := generateFile("templates/status.go.tmpl",
				filepath.Join(tmpdir, "generated_status.go"), tt.md, "metadata")
			require.NoError(t, err)
			actual, err := os.ReadFile(filepath.Join(tmpdir, "generated_status.go")) //nolint:gosec
			require.NoError(t, err)
			require.Equal(t, tt.expected, string(actual))
		})
	}
}

func TestGenerateTelemetryMetadata(t *testing.T) {
	tests := []struct {
		name     string
		output   string
		md       Metadata
		expected string
	}{
		{
			name: "foo component with beta status",
			md: Metadata{
				Type: "foo",
				Status: &Status{
					Stability: map[component.StabilityLevel][]string{
						component.StabilityLevelBeta: {"metrics"},
					},
					Distributions: []string{"contrib"},
					Class:         "receiver",
				},
			},
			expected: `// Code generated by mdatagen. DO NOT EDIT.

package metadata

import (
	"go.opentelemetry.io/otel/metric"
	"go.opentelemetry.io/otel/trace"

	"go.opentelemetry.io/collector/component"
)

func Meter(settings component.TelemetrySettings) metric.Meter {
	return settings.MeterProvider.Meter("")
}

func Tracer(settings component.TelemetrySettings) trace.Tracer {
	return settings.TracerProvider.Tracer("")
}
`,
		},
		{
			name: "foo component with alpha status",
			md: Metadata{
				Type: "foo",
				Status: &Status{
					Stability: map[component.StabilityLevel][]string{
						component.StabilityLevelAlpha: {"metrics"},
					},
					Distributions: []string{"contrib"},
					Class:         "receiver",
				},
			},
			expected: `// Code generated by mdatagen. DO NOT EDIT.

package metadata

import (
	"go.opentelemetry.io/otel/metric"
	"go.opentelemetry.io/otel/trace"

	"go.opentelemetry.io/collector/component"
)

func Meter(settings component.TelemetrySettings) metric.Meter {
	return settings.MeterProvider.Meter("")
}

func Tracer(settings component.TelemetrySettings) trace.Tracer {
	return settings.TracerProvider.Tracer("")
}
`,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			tmpdir := t.TempDir()
			err := generateFile("templates/telemetry.go.tmpl",
				filepath.Join(tmpdir, "generated_telemetry.go"), tt.md, "metadata")
			require.NoError(t, err)
			actual, err := os.ReadFile(filepath.Join(tmpdir, "generated_telemetry.go")) //nolint:gosec
			require.NoError(t, err)
			require.Equal(t, tt.expected, string(actual))
		})
	}
}
