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packages/system/virt/tests/performance_tests.rs

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+/// Performance and resource usage tests for SAL Virt package
+///
+/// These tests verify that:
+/// - Builders don't leak memory or resources
+/// - Performance is acceptable for typical usage
+/// - Resource usage is reasonable
+/// - Concurrent usage works correctly
+use sal_virt::rfs::{MountType, RfsBuilder, StoreSpec};
+
+/// Tests memory efficiency of RFS builders
+///
+/// This test verifies that:
+/// - Builders don't leak memory when created in bulk
+/// - Builder chaining doesn't cause memory issues
+/// - Cloning builders works efficiently
+/// - Large numbers of builders can be created
+#[test]
+fn test_rfs_builder_memory_efficiency() {
+    // Test creating many builders
+    let builders: Vec<RfsBuilder> = (0..1000)
+        .map(|i| {
+            RfsBuilder::new(
+                &format!("/src{}", i),
+                &format!("/dst{}", i),
+                MountType::Local,
+            )
+        })
+        .collect();
+
+    // Verify all builders maintain correct state
+    for (i, builder) in builders.iter().enumerate() {
+        assert_eq!(builder.source(), &format!("/src{}", i));
+        assert_eq!(builder.target(), &format!("/dst{}", i));
+        assert!(matches!(builder.mount_type(), MountType::Local));
+        assert!(builder.options().is_empty());
+        assert!(!builder.debug());
+    }
+
+    // Test builder chaining doesn't cause issues
+    let chained_builders: Vec<RfsBuilder> = builders
+        .into_iter()
+        .take(100)
+        .map(|builder| {
+            builder
+                .with_option("opt1", "val1")
+                .with_option("opt2", "val2")
+                .with_debug(true)
+        })
+        .collect();
+
+    // Verify chained builders maintain state
+    for builder in &chained_builders {
+        assert_eq!(builder.options().len(), 2);
+        assert!(builder.debug());
+        assert_eq!(builder.options().get("opt1"), Some(&"val1".to_string()));
+        assert_eq!(builder.options().get("opt2"), Some(&"val2".to_string()));
+    }
+
+    println!("✓ Created and validated 1000 RFS builders + 100 chained builders");
+}
+
+/// Tests StoreSpec memory efficiency and performance
+///
+/// This test verifies that:
+/// - StoreSpecs can be created efficiently in bulk
+/// - String serialization performance is acceptable
+/// - Memory usage is reasonable for large collections
+/// - Option handling scales well
+#[test]
+fn test_store_spec_performance() {
+    // Create many store specs with different configurations
+    let mut specs = Vec::new();
+
+    // File specs
+    for i in 0..200 {
+        let spec = StoreSpec::new("file")
+            .with_option("path", &format!("/storage/file{}", i))
+            .with_option("compression", if i % 2 == 0 { "gzip" } else { "lz4" })
+            .with_option("backup", &format!("backup{}", i));
+        specs.push(spec);
+    }
+
+    // S3 specs
+    for i in 0..200 {
+        let spec = StoreSpec::new("s3")
+            .with_option("bucket", &format!("bucket-{}", i))
+            .with_option("region", if i % 3 == 0 { "us-east-1" } else { "us-west-2" })
+            .with_option("key", &format!("key-{}", i));
+        specs.push(spec);
+    }
+
+    // Custom specs
+    for i in 0..100 {
+        let spec = StoreSpec::new(&format!("custom-{}", i))
+            .with_option("endpoint", &format!("https://storage{}.example.com", i))
+            .with_option("auth", &format!("token-{}", i))
+            .with_option("timeout", &format!("{}s", 30 + i % 60));
+        specs.push(spec);
+    }
+
+    // Test serialization performance
+    let serialized: Vec<String> = specs.iter().map(|spec| spec.to_string()).collect();
+
+    // Verify all serializations are valid
+    for (i, serialized_spec) in serialized.iter().enumerate() {
+        assert!(!serialized_spec.is_empty());
+        assert!(serialized_spec.contains(":") || !specs[i].options.is_empty());
+    }
+
+    // Test that specs maintain their properties
+    assert_eq!(specs.len(), 500);
+    for spec in &specs {
+        assert!(!spec.spec_type.is_empty());
+        assert!(!spec.to_string().is_empty());
+    }
+
+    println!("✓ Created and serialized 500 StoreSpecs with various configurations");
+}
+
+/// Tests builder pattern performance and chaining
+///
+/// This test verifies that:
+/// - Method chaining is efficient
+/// - Builder pattern doesn't cause performance issues
+/// - Complex configurations can be built efficiently
+/// - Memory usage is reasonable for complex builders
+#[test]
+fn test_builder_chaining_performance() {
+    // Test complex RFS builder chaining
+    let complex_builders: Vec<RfsBuilder> = (0..100)
+        .map(|i| {
+            let mut builder = RfsBuilder::new(
+                &format!("/complex/source/{}", i),
+                &format!("/complex/target/{}", i),
+                match i % 4 {
+                    0 => MountType::Local,
+                    1 => MountType::SSH,
+                    2 => MountType::S3,
+                    _ => MountType::Custom(format!("custom-{}", i)),
+                },
+            );
+
+            // Add many options through chaining
+            for j in 0..10 {
+                builder = builder.with_option(&format!("option{}", j), &format!("value{}", j));
+            }
+
+            builder.with_debug(i % 2 == 0)
+        })
+        .collect();
+
+    // Verify all complex builders are correct
+    for (i, builder) in complex_builders.iter().enumerate() {
+        assert_eq!(builder.source(), &format!("/complex/source/{}", i));
+        assert_eq!(builder.target(), &format!("/complex/target/{}", i));
+        assert_eq!(builder.options().len(), 10);
+        assert_eq!(builder.debug(), i % 2 == 0);
+
+        // Verify all options are present
+        for j in 0..10 {
+            assert_eq!(
+                builder.options().get(&format!("option{}", j)),
+                Some(&format!("value{}", j))
+            );
+        }
+    }
+
+    println!("✓ Created 100 complex builders with 10 options each via chaining");
+}
+
+/// Tests concurrent builder usage (thread safety where applicable)
+///
+/// This test verifies that:
+/// - Builders can be used safely across threads
+/// - No data races occur
+/// - Performance is acceptable under concurrent load
+/// - Resource cleanup works correctly
+#[test]
+fn test_concurrent_builder_usage() {
+    use std::thread;
+
+    // Test concurrent RFS builder creation
+    let handles: Vec<_> = (0..10)
+        .map(|thread_id| {
+            thread::spawn(move || {
+                let mut builders = Vec::new();
+
+                // Each thread creates 50 builders
+                for i in 0..50 {
+                    let builder = RfsBuilder::new(
+                        &format!("/thread{}/src{}", thread_id, i),
+                        &format!("/thread{}/dst{}", thread_id, i),
+                        MountType::Local,
+                    )
+                    .with_option("thread_id", &thread_id.to_string())
+                    .with_option("builder_id", &i.to_string());
+
+                    builders.push(builder);
+                }
+
+                // Verify builders in this thread
+                for (i, builder) in builders.iter().enumerate() {
+                    assert_eq!(builder.source(), &format!("/thread{}/src{}", thread_id, i));
+                    assert_eq!(
+                        builder.options().get("thread_id"),
+                        Some(&thread_id.to_string())
+                    );
+                    assert_eq!(builder.options().get("builder_id"), Some(&i.to_string()));
+                }
+
+                builders.len()
+            })
+        })
+        .collect();
+
+    // Wait for all threads and collect results
+    let mut total_builders = 0;
+    for handle in handles {
+        let count = handle.join().expect("Thread should complete successfully");
+        total_builders += count;
+    }
+
+    assert_eq!(total_builders, 500); // 10 threads * 50 builders each
+    println!(
+        "✓ Successfully created {} builders across 10 concurrent threads",
+        total_builders
+    );
+}
+
+/// Tests resource cleanup and builder lifecycle
+///
+/// This test verifies that:
+/// - Builders can be dropped safely
+/// - No resource leaks occur
+/// - Large collections can be cleaned up efficiently
+/// - Memory is reclaimed properly
+#[test]
+fn test_resource_cleanup_and_lifecycle() {
+    // Create a large collection of builders with various configurations
+    let mut all_builders = Vec::new();
+
+    // Add RFS builders
+    for i in 0..200 {
+        let builder = RfsBuilder::new(
+            &format!("/lifecycle/src{}", i),
+            &format!("/lifecycle/dst{}", i),
+            if i % 2 == 0 {
+                MountType::Local
+            } else {
+                MountType::SSH
+            },
+        )
+        .with_option("lifecycle", "test")
+        .with_option("id", &i.to_string());
+
+        all_builders.push(builder);
+    }
+
+    // Test that builders can be moved and cloned
+    let cloned_builders: Vec<RfsBuilder> = all_builders.iter().cloned().collect();
+    assert_eq!(cloned_builders.len(), 200);
+
+    // Test partial cleanup
+    let (first_half, second_half) = all_builders.split_at(100);
+    assert_eq!(first_half.len(), 100);
+    assert_eq!(second_half.len(), 100);
+
+    // Verify builders still work after splitting
+    for (i, builder) in first_half.iter().enumerate() {
+        assert_eq!(builder.source(), &format!("/lifecycle/src{}", i));
+        assert_eq!(builder.options().get("id"), Some(&i.to_string()));
+    }
+
+    // Test that we can create new builders after cleanup
+    let new_builders: Vec<RfsBuilder> = (0..50)
+        .map(|i| {
+            RfsBuilder::new(
+                &format!("/new/src{}", i),
+                &format!("/new/dst{}", i),
+                MountType::WebDAV,
+            )
+        })
+        .collect();
+
+    assert_eq!(new_builders.len(), 50);
+
+    println!("✓ Successfully tested resource lifecycle with 200 + 200 + 50 builders");
+}