Merge "Only report tryTest errors when not caught" into main am: 739a6c4320 am: a75afa3338

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3382164

Change-Id: I9e79fafaa6923b36d4f7a0491bc97433cda70678
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/staticlibs/tests/unit/src/com/android/net/module/util/CleanupTest.kt b/staticlibs/tests/unit/src/com/android/net/module/util/CleanupTest.kt
index 851d09a..bde55c3 100644
--- a/staticlibs/tests/unit/src/com/android/net/module/util/CleanupTest.kt
+++ b/staticlibs/tests/unit/src/com/android/net/module/util/CleanupTest.kt
@@ -17,14 +17,19 @@
 package com.android.net.module.util
 
 import android.util.Log
+import com.android.testutils.TryTestConfig
 import com.android.testutils.tryTest
+import java.util.function.Consumer
+import kotlin.test.assertEquals
+import kotlin.test.assertFailsWith
+import kotlin.test.assertNull
+import kotlin.test.assertTrue
+import kotlin.test.fail
+import org.junit.After
+import org.junit.Before
 import org.junit.Test
 import org.junit.runner.RunWith
 import org.junit.runners.JUnit4
-import kotlin.test.assertEquals
-import kotlin.test.assertFailsWith
-import kotlin.test.assertTrue
-import kotlin.test.fail
 
 private val TAG = CleanupTest::class.simpleName
 
@@ -34,6 +39,18 @@
     class TestException2 : Exception()
     class TestException3 : Exception()
 
+    private var originalDiagnosticsCollector: Consumer<Throwable>? = null
+
+    @Before
+    fun setUp() {
+        originalDiagnosticsCollector = TryTestConfig.swapDiagnosticsCollector(null)
+    }
+
+    @After
+    fun tearDown() {
+        TryTestConfig.swapDiagnosticsCollector(originalDiagnosticsCollector)
+    }
+
     @Test
     fun testNotThrow() {
         var x = 1
@@ -220,4 +237,74 @@
         assertTrue(thrown.suppressedExceptions[1] is TestException3)
         assert(x == 7)
     }
+
+    @Test
+    fun testNoErrorReportingWhenCaught() {
+        var error: Throwable? = null
+        TryTestConfig.swapDiagnosticsCollector {
+            error = it
+        }
+        var x = 1
+        tryTest {
+            x = 2
+            throw TestException1()
+            x = 3
+        }.catch<TestException1> {
+            x = 4
+        } cleanup {
+            x = 5
+        }
+
+        assertEquals(5, x)
+        assertNull(error)
+    }
+
+    @Test
+    fun testErrorReportingInTry() {
+        var error: Throwable? = null
+        TryTestConfig.swapDiagnosticsCollector {
+            assertNull(error)
+            error = it
+        }
+        var x = 1
+        assertFailsWith<TestException1> {
+            tryTest {
+                x = 2
+                throw TestException1()
+                x = 3
+            } cleanupStep {
+                throw TestException2()
+                x = 4
+            } cleanup {
+                x = 5
+            }
+        }
+
+        assertEquals(5, x)
+        assertTrue(error is TestException1)
+    }
+
+    @Test
+    fun testErrorReportingInCatch() {
+        var error: Throwable? = null
+        TryTestConfig.swapDiagnosticsCollector {
+            assertNull(error)
+            error = it
+        }
+        var x = 1
+        assertFailsWith<TestException2> {
+            tryTest {
+                throw TestException1()
+                x = 2
+            }.catch<TestException1> {
+                throw TestException2()
+                x = 3
+            } cleanup {
+                x = 4
+            }
+        }
+
+        assertEquals(4, x)
+        assertTrue(error is TestException2)
+    }
 }
diff --git a/staticlibs/testutils/devicetests/com/android/testutils/ConnectivityDiagnosticsCollector.kt b/staticlibs/testutils/devicetests/com/android/testutils/ConnectivityDiagnosticsCollector.kt
index 9e63910..e5b8471 100644
--- a/staticlibs/testutils/devicetests/com/android/testutils/ConnectivityDiagnosticsCollector.kt
+++ b/staticlibs/testutils/devicetests/com/android/testutils/ConnectivityDiagnosticsCollector.kt
@@ -114,7 +114,7 @@
     override fun onSetUp() {
         assertNull(instance, "ConnectivityDiagnosticsCollectors were set up multiple times")
         instance = this
-        TryTestConfig.setDiagnosticsCollector { throwable ->
+        TryTestConfig.swapDiagnosticsCollector { throwable ->
             if (runOnFailure(throwable)) {
                 collectTestFailureDiagnostics(throwable)
             }
diff --git a/staticlibs/testutils/hostdevice/com/android/testutils/Cleanup.kt b/staticlibs/testutils/hostdevice/com/android/testutils/Cleanup.kt
index dcd422c..45c69c9 100644
--- a/staticlibs/testutils/hostdevice/com/android/testutils/Cleanup.kt
+++ b/staticlibs/testutils/hostdevice/com/android/testutils/Cleanup.kt
@@ -75,13 +75,21 @@
  */
 
 object TryTestConfig {
-    internal var diagnosticsCollector: Consumer<Throwable>? = null
+    private var diagnosticsCollector: Consumer<Throwable>? = null
 
     /**
      * Set the diagnostics collector to be used in case of failure in [tryTest].
+     *
+     * @return The previous collector.
      */
-    fun setDiagnosticsCollector(collector: Consumer<Throwable>) {
+    fun swapDiagnosticsCollector(collector: Consumer<Throwable>?): Consumer<Throwable>? {
+        val oldCollector = diagnosticsCollector
         diagnosticsCollector = collector
+        return oldCollector
+    }
+
+    fun reportError(e: Throwable) {
+        diagnosticsCollector?.accept(e)
     }
 }
 
@@ -90,14 +98,10 @@
         try {
             Result.success(block())
         } catch (e: Throwable) {
-            TryTestConfig.diagnosticsCollector?.accept(e)
             Result.failure(e)
-        })
+        }, skipErrorReporting = false)
 
-// Some downstream branches have an older kotlin that doesn't know about value classes.
-// TODO : Change this to "value class" when aosp no longer merges into such branches.
-@Suppress("INLINE_CLASS_DEPRECATED")
-inline class TryExpr<T>(val result: Result<T>) {
+class TryExpr<T>(val result: Result<T>, val skipErrorReporting: Boolean) {
     inline infix fun <reified E : Throwable> catch(block: (E) -> T): TryExpr<T> {
         val originalException = result.exceptionOrNull()
         if (originalException !is E) return this
@@ -105,23 +109,32 @@
             Result.success(block(originalException))
         } catch (e: Throwable) {
             Result.failure(e)
-        })
+        }, this.skipErrorReporting)
     }
 
     @CheckReturnValue
     inline infix fun cleanupStep(block: () -> Unit): TryExpr<T> {
+        // Report errors before the cleanup step, but after catch blocks that may suppress it
+        val originalException = result.exceptionOrNull()
+        var nextSkipErrorReporting = skipErrorReporting
+        if (!skipErrorReporting && originalException != null) {
+            TryTestConfig.reportError(originalException)
+            nextSkipErrorReporting = true
+        }
         try {
             block()
         } catch (e: Throwable) {
-            val originalException = result.exceptionOrNull()
-            return TryExpr(if (null == originalException) {
-                Result.failure(e)
+            return if (null == originalException) {
+                if (!skipErrorReporting) {
+                    TryTestConfig.reportError(e)
+                }
+                TryExpr(Result.failure(e), skipErrorReporting = true)
             } else {
                 originalException.addSuppressed(e)
-                Result.failure(originalException)
-            })
+                TryExpr(Result.failure(originalException), true)
+            }
         }
-        return this
+        return TryExpr(result, nextSkipErrorReporting)
     }
 
     inline infix fun cleanup(block: () -> Unit): T = cleanupStep(block).result.getOrThrow()