Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

migrations/global_agent/migration_test.go

@@ -0,0 +1,104 @@
+package global_agent_test
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/influxdata/telegraf/config"
+	_ "github.com/influxdata/telegraf/migrations/global_agent" // register migration
+)
+
+func TestNoMigration(t *testing.T) {
+	fn := filepath.Join("testcases", "default.conf")
+
+	// Read the input data
+	input, remote, err := config.LoadConfigFile(fn)
+	require.NoError(t, err)
+	require.False(t, remote)
+	require.NotEmpty(t, input)
+
+	// Expect the output to be equal to the input
+	expectedBuffer, err := os.ReadFile(fn)
+	require.NoError(t, err)
+	expected := config.NewConfig()
+	require.NoError(t, expected.LoadConfigData(expectedBuffer, config.EmptySourcePath))
+	require.NotNil(t, expected.Agent)
+
+	// Migrate
+	output, n, err := config.ApplyMigrations(input)
+	require.NoError(t, err)
+	require.NotEmpty(t, output)
+	require.Zero(t, n)
+
+	actual := config.NewConfig()
+	require.NoError(t, actual.LoadConfigData(output, config.EmptySourcePath))
+	require.NotNil(t, actual.Agent)
+
+	// Test the output
+	require.EqualValues(t, expected.Agent, actual.Agent, string(output))
+	require.Equal(t, string(expectedBuffer), string(output))
+}
+
+func TestLogTargetEventlogCollision(t *testing.T) {
+	fn := filepath.Join("testcases", "logtarget_eventlog_collision.conf")
+
+	// Read the input data
+	input, remote, err := config.LoadConfigFile(fn)
+	require.NoError(t, err)
+	require.False(t, remote)
+	require.NotEmpty(t, input)
+
+	// Migrate
+	_, n, err := config.ApplyMigrations(input)
+	require.ErrorContains(t, err, "contradicting setting for 'logtarget' and 'logformat'")
+	require.Zero(t, n)
+}
+
+func TestCases(t *testing.T) {
+	// Get all directories in testdata
+	folders, err := os.ReadDir("testcases")
+	require.NoError(t, err)
+
+	for _, f := range folders {
+		// Only handle folders
+		if !f.IsDir() {
+			continue
+		}
+
+		t.Run(f.Name(), func(t *testing.T) {
+			testcasePath := filepath.Join("testcases", f.Name())
+			inputFile := filepath.Join(testcasePath, "telegraf.conf")
+			expectedFile := filepath.Join(testcasePath, "expected.conf")
+
+			// Read the expected output
+			expected := config.NewConfig()
+			require.NoError(t, expected.LoadConfig(expectedFile))
+			require.NotNil(t, expected.Agent)
+
+			// Read the input data
+			input, remote, err := config.LoadConfigFile(inputFile)
+			require.NoError(t, err)
+			require.False(t, remote)
+			require.NotEmpty(t, input)
+
+			// Migrate
+			output, n, err := config.ApplyMigrations(input)
+			require.NoError(t, err)
+			require.NotEmpty(t, output)
+			require.Positive(t, n, "expected migration application but none applied")
+			actual := config.NewConfig()
+			require.NoError(t, actual.LoadConfigData(output, config.EmptySourcePath))
+			require.NotNil(t, actual.Agent)
+
+			// Test the output
+			require.EqualValues(t, expected.Agent, actual.Agent, string(output))
+
+			expectedBuffer, err := os.ReadFile(expectedFile)
+			require.NoError(t, err)
+			require.Equal(t, string(expectedBuffer), string(output))
+		})
+	}
+}