chore: make 'cargo test' in the opentelemetry-sdk dir work

opentelemetry-sdk/src/logs/batch_log_processor.rs

@@ -104,7 +104,9 @@ type LogsData = Box<(SdkLogRecord, InstrumentationScope)>;
 ///
 /// ### Using a BatchLogProcessor:
 ///
-/// ```rust
+/// ```
+/// # #[cfg(feature = "testing")]
+/// # {
 /// use opentelemetry_sdk::logs::{BatchLogProcessor, BatchConfigBuilder, SdkLoggerProvider};
 /// use opentelemetry::global;
 /// use std::time::Duration;
@@ -124,7 +126,8 @@ type LogsData = Box<(SdkLogRecord, InstrumentationScope)>;
 /// let provider = SdkLoggerProvider::builder()
 ///     .with_log_processor(processor)
 ///     .build();
-///
+/// # }
+/// ```
 pub struct BatchLogProcessor {
     logs_sender: SyncSender<LogsData>, // Data channel to store log records and instrumentation scopes
     message_sender: SyncSender<BatchMessage>, // Control channel to store control messages for the worker thread

opentelemetry-sdk/src/logs/simple_log_processor.rs

@@ -47,7 +47,9 @@ use std::time::Duration;
 ///
 /// ### Using a SimpleLogProcessor
 ///
-/// ```rust
+/// ```
+/// # #[cfg(feature = "testing")]
+/// # {
 /// use opentelemetry_sdk::logs::{SimpleLogProcessor, SdkLoggerProvider, LogExporter};
 /// use opentelemetry::global;
 /// use opentelemetry_sdk::logs::InMemoryLogExporter;
@@ -56,7 +58,7 @@ use std::time::Duration;
 /// let provider = SdkLoggerProvider::builder()
 ///     .with_simple_exporter(exporter)
 ///     .build();
-///
+/// # }
 /// ```
 ///
 #[derive(Debug)]

opentelemetry-sdk/src/metrics/instrument.rs

@@ -134,6 +134,8 @@ impl Instrument {
 /// # Example
 ///
 /// ```
+/// # #[cfg(feature = "spec_unstable_metrics_views")]
+/// # {
 /// use opentelemetry_sdk::metrics::{Aggregation, Stream};
 /// use opentelemetry::Key;
 ///
@@ -143,6 +145,7 @@ impl Instrument {
 ///     .with_cardinality_limit(100)
 ///     .build()
 ///     .unwrap();
+/// # }
 /// ```
 #[derive(Default, Debug)]
 pub struct StreamBuilder {

opentelemetry-sdk/src/trace/span_processor.rs

@@ -194,7 +194,9 @@ impl<T: SpanExporter> SpanProcessor for SimpleSpanProcessor<T> {
 /// with a custom configuration. Note that a dedicated thread is used internally
 /// to manage the export process.
 ///
-/// ```rust
+/// ```
+/// # #[cfg(all(feature = "testing", feature = "experimental_async_runtime"))]
+/// # {
 /// use opentelemetry::global;
 /// use opentelemetry_sdk::{
 ///     trace::{BatchSpanProcessor, BatchConfigBuilder, SdkTracerProvider},
@@ -234,6 +236,7 @@ impl<T: SpanExporter> SpanProcessor for SimpleSpanProcessor<T> {
 ///     // Step 5: Ensure all spans are flushed before exiting.
 ///     provider.shutdown();
 /// }
+/// # }
 /// ```
 use std::sync::mpsc::sync_channel;
 use std::sync::mpsc::Receiver;