Add load tests for expansion analyzers

Co-authored-by: jackfirth <[email protected]>

Author: Copilot

test/analyzer-load-test.rkt

@@ -0,0 +1,165 @@
+#lang racket/base
+
+(require racket/contract/base
+         racket/string
+         rackunit
+         resyntax/default-recommendations/analyzers/identifier-usage
+         resyntax/default-recommendations/analyzers/variable-mutability
+         resyntax/default-recommendations/analyzers/ignored-result-values
+         resyntax/default-recommendations/analyzers/function-expression-analyzer
+         resyntax/private/analysis
+         resyntax/private/source)
+
+;; Load tests for expansion analyzers to ensure they can handle large files
+;; within reasonable timeouts. These tests are designed to catch severe
+;; performance regressions where analyzers would take minutes or hang on
+;; moderately large files.
+
+(define timeout-ms 30000) ; 30 second timeout for load tests
+
+;; Generate a large test file with many definitions and function calls.
+;; This creates a file with approximately 300+ lines of code with various
+;; constructs that analyzers need to process. The file is large enough to
+;; exercise analyzer performance but small enough to complete in reasonable time.
+(define (generate-large-test-program)
+  (string-join
+   (append
+    (list "#lang racket/base"
+          ""
+          "(require racket/list racket/string)"
+          "")
+    ;; Generate many function definitions
+    (for/list ([i (in-range 25)])
+      (format "(define (func~a x y)
+  (let ([a (+ x y)]
+        [b (* x y)])
+    (if (> a b)
+        (+ a b)
+        (* a b))))" i))
+    (list "")
+    ;; Generate many variable definitions
+    (for/list ([i (in-range 30)])
+      (format "(define var~a ~a)" i i))
+    (list "")
+    ;; Generate many mutable variables with assignments
+    (for/list ([i (in-range 20)])
+      (format "(define mut~a 0)
+(set! mut~a ~a)" i i i))
+    (list "")
+    ;; Generate function calls with various patterns
+    (for/list ([i (in-range 25)])
+      (format "(void (func~a var~a (+ var~a ~a)))"
+              (modulo i 25)
+              (modulo i 30)
+              (modulo (+ i 1) 30)
+              i))
+    (list "")
+    ;; Generate nested expressions with ignored results
+    (for/list ([i (in-range 15)])
+      (format "(begin
+  (+ ~a ~a)
+  (void ~a))" i (+ i 1) i)))
+   "\n"))
+
+(define large-test-source (string-source (generate-large-test-program)))
+
+(test-case "identifier-usage-analyzer load test"
+  ;; This test ensures the identifier-usage-analyzer can analyze a large file
+  ;; within the timeout period.
+  (define start-time (current-inexact-milliseconds))
+  (define analysis
+    (source-analyze large-test-source
+                    #:analyzers (list identifier-usage-analyzer)
+                    #:timeout-ms timeout-ms))
+  (define elapsed-ms (- (current-inexact-milliseconds) start-time))
+  
+  ;; Verify the analysis completed successfully
+  (check-true (source-code-analysis? analysis))
+  
+  ;; Verify it completed within the timeout (with some margin)
+  (check-true (< elapsed-ms timeout-ms)
+              (format "identifier-usage-analyzer took ~a ms, expected < ~a ms"
+                      elapsed-ms
+                      timeout-ms)))
+
+(test-case "variable-mutability-analyzer load test"
+  ;; This test ensures the variable-mutability-analyzer can analyze a large file
+  ;; within the timeout period.
+  (define start-time (current-inexact-milliseconds))
+  (define analysis
+    (source-analyze large-test-source
+                    #:analyzers (list variable-mutability-analyzer)
+                    #:timeout-ms timeout-ms))
+  (define elapsed-ms (- (current-inexact-milliseconds) start-time))
+  
+  ;; Verify the analysis completed successfully
+  (check-true (source-code-analysis? analysis))
+  
+  ;; Verify it completed within the timeout (with some margin)
+  (check-true (< elapsed-ms timeout-ms)
+              (format "variable-mutability-analyzer took ~a ms, expected < ~a ms"
+                      elapsed-ms
+                      timeout-ms)))
+
+(test-case "ignored-result-values-analyzer load test"
+  ;; This test ensures the ignored-result-values-analyzer can analyze a large file
+  ;; within the timeout period.
+  (define start-time (current-inexact-milliseconds))
+  (define analysis
+    (source-analyze large-test-source
+                    #:analyzers (list ignored-result-values-analyzer)
+                    #:timeout-ms timeout-ms))
+  (define elapsed-ms (- (current-inexact-milliseconds) start-time))
+  
+  ;; Verify the analysis completed successfully
+  (check-true (source-code-analysis? analysis))
+  
+  ;; Verify it completed within the timeout (with some margin)
+  (check-true (< elapsed-ms timeout-ms)
+              (format "ignored-result-values-analyzer took ~a ms, expected < ~a ms"
+                      elapsed-ms
+                      timeout-ms)))
+
+(test-case "function-expression-analyzer load test"
+  ;; This test ensures the function-expression-analyzer can analyze a large file
+  ;; within the timeout period.
+  (define start-time (current-inexact-milliseconds))
+  (define analysis
+    (source-analyze large-test-source
+                    #:analyzers (list function-expression-analyzer)
+                    #:timeout-ms timeout-ms))
+  (define elapsed-ms (- (current-inexact-milliseconds) start-time))
+  
+  ;; Verify the analysis completed successfully
+  (check-true (source-code-analysis? analysis))
+  
+  ;; Verify it completed within the timeout (with some margin)
+  (check-true (< elapsed-ms timeout-ms)
+              (format "function-expression-analyzer took ~a ms, expected < ~a ms"
+                      elapsed-ms
+                      timeout-ms)))
+
+(test-case "all analyzers together load test"
+  ;; This test ensures all analyzers can work together on a large file
+  ;; within the timeout period.
+  (define all-analyzers
+    (list identifier-usage-analyzer
+          variable-mutability-analyzer
+          ignored-result-values-analyzer
+          function-expression-analyzer))
+  
+  (define start-time (current-inexact-milliseconds))
+  (define analysis
+    (source-analyze large-test-source
+                    #:analyzers all-analyzers
+                    #:timeout-ms timeout-ms))
+  (define elapsed-ms (- (current-inexact-milliseconds) start-time))
+  
+  ;; Verify the analysis completed successfully
+  (check-true (source-code-analysis? analysis))
+  
+  ;; Verify it completed within the timeout (with some margin)
+  (check-true (< elapsed-ms timeout-ms)
+              (format "all analyzers together took ~a ms, expected < ~a ms"
+                      elapsed-ms
+                      timeout-ms)))