Add broader Stream API unit tests and VM integration test for edge cases

[shai-almog]

Motivation

• Improve coverage of Stream API edge cases to ensure consistent behavior across the translator/VM and JavaSE, especially for distinct, skip, limit, toArray, empty-stream semantics, encounter order and null handling.
• Add an integration test that compiles a small app, runs it on JavaSE, translates it for the native VM, builds and executes the translated binary, and verifies the outputs match.

Description

• Extended StreamApiTest by adding multiple assertions that exercise distinct(), sorted(), skip(), limit(), toArray(), Stream.empty(), limit(0), skipping past the end, forEach encounter order, empty-stream anyMatch/allMatch/noneMatch semantics, and distinct() with null values, and added the required Consumer import.
• Added StreamApiIntegrationTest (JUnit) under vm/tests which dynamically writes and compiles StreamEdgeApp.java, runs it on the host JVM, runs the translator, uses CMake to build the translated native executable, executes it, and compares the RESULT= line from both runs for equality.
• Added the test resource StreamEdgeApp.java used by the integration test which performs a deterministic series of stream operations and prints a RESULT= checksum.

Testing

• Ran the StreamApiTest unit tests in the hellocodenameone test suite and they completed successfully.
• Executed the new StreamApiIntegrationTest which compiles StreamEdgeApp, runs it on JavaSE, translates and builds a native executable, and compared the RESULT= output from JavaSE and the native run; the integration test passed.

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Codex Task

[github-actions]

✅ Continuous Quality Report

Test & Coverage

• ✅ Tests: 2322 total, 0 failed, 0 skipped
• 📊 Line coverage: 53.23% [HTML preview] [Download]
  • Lowest covered classes
    • com.codename1.ui.Display$EdtException – 0.00%
    • com.codename1.ui.plaf.CSSBorder$LinearGradient – 0.00%
    • com.codename1.util.EasyThread$InQueueRunnable – 0.00%
    • com.codename1.components.FloatingActionButton$ReleaseActionListener – 0.00%
    • com.codename1.io.Oauth2$RefreshTokenActionListener – 0.00%
    • com.codename1.util.EasyThread$RunAndWaitRunnable – 0.00%
    • com.codename1.components.ToastBar$FlushAnimationCallback – 0.00%
    • com.codename1.ui.plaf.CSSBorder$ColorStop – 0.00%
    • com.codename1.ui.ElevationComparator – 0.00%
    • com.codename1.ui.spinner.TimeSpinner3D$MinuteRowFormatter – 0.00%

Static Analysis

• SpotBugs [HTML preview] [Download]
  • ❌ ByteCodeTranslator: 97 findings (High: 2, Normal: 68, Low: 27)
    • Top findings
      • High: com/codename1/tools/translator/BytecodeMethod.java:559 – Method com.codename1.tools.translator.BytecodeMethod.findWritableFields(Set) seems to be useless (rule: UC_USELESS_VOID_METHOD)
      • High: com/codename1/tools/translator/bytecodes/TryCatch.java:75 – Write to static field com.codename1.tools.translator.bytecodes.TryCatch.hasTryCatch from instance method com.codename1.tools.translator.bytecodes.TryCatch.appendInstruction(StringBuilder, List) (rule: ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD)
      • Normal: com/codename1/tools/translator/ByteCodeClass.java:1791 – com.codename1.tools.translator.ByteCodeClass.getBaseClassObject() may expose internal representation by returning ByteCodeClass.baseClassObject (rule: EI_EXPOSE_REP)
      • …and 94 more
  • ❌ android: 412 findings (High: 24, Normal: 196, Low: 192)
    • Top findings
      • High: CodenameOne/src/com/codename1/impl/CodenameOneThread.java:48 – com.codename1.impl.CodenameOneThread.STACK_FRAME_SIZE isn't final but should be (rule: MS_SHOULD_BE_FINAL)
      • High: com/codename1/impl/android/AndroidImplementation.java:1067 – Write to static field com.codename1.impl.android.AndroidImplementation.context from instance method com.codename1.impl.android.AndroidImplementation.setContext(Context) (rule: ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD)
      • High: com/codename1/impl/android/AndroidImplementation.java:1268 – com.codename1.impl.android.AndroidImplementation.isDarkMode() has Boolean return type and returns explicit null (rule: NP_BOOLEAN_RETURN_NULL)
      • …and 409 more
  • ❌ codenameone-maven-plugin: 478 findings (High: 1, Normal: 313, Low: 164)
    • Top findings
      • High: com/codename1/maven/AbstractCN1Mojo.java:807 – com.codename1.maven.AbstractCN1Mojo.OS isn't final but should be (rule: MS_SHOULD_BE_FINAL)
      • Normal: com/codename1/builders/AndroidGradleBuilder.java:1018 – Dead store to googleServicesJson in com.codename1.builders.AndroidGradleBuilder.build(File, BuildRequest) (rule: DLS_DEAD_LOCAL_STORE)
      • Normal: com/codename1/builders/AndroidGradleBuilder.java:1043 – Possible null pointer dereference in com.codename1.builders.AndroidGradleBuilder.build(File, BuildRequest) due to return value of called method (rule: NP_NULL_ON_SOME_PATH_FROM_RETURN_VALUE)
      • …and 475 more
  • ❌ core-unittests: 1 findings (Normal: 1)
    • Top findings
      • Normal: CodenameOne/src/com/codename1/ui/util/MutableResource.java:239 – com.codename1.ui.util.MutableResource.saveL10N(DataOutputStream, Hashtable) makes inefficient use of keySet iterator instead of entrySet iterator (rule: WMI_WRONG_MAP_ITERATOR)
  • ❌ ios: 125 findings (High: 4, Normal: 75, Low: 46)
    • Top findings
      • High: com/codename1/impl/ios/IOSImplementation.java:1223 – com.codename1.impl.ios.IOSImplementation.isDarkMode() has Boolean return type and returns explicit null (rule: NP_BOOLEAN_RETURN_NULL)
      • High: com/codename1/impl/ios/IOSImplementation.java:128 – com.codename1.impl.ios.IOSImplementation.nativeInstance isn't final but should be (rule: MS_SHOULD_BE_FINAL)
      • High: com/codename1/impl/ios/IOSImplementation.java:214 – Write to static field com.codename1.impl.ios.IOSImplementation.instance from instance method com.codename1.impl.ios.IOSImplementation.init(Object) (rule: ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD)
      • …and 122 more
• ✅ PMD: 0 findings (no issues) [Report archive]
• ✅ Checkstyle: 0 findings (no issues) [Report archive]

Generated automatically by the PR CI workflow.

[shai-almog]

Compared 32 screenshots: 32 matched.

Native Android coverage

• 📊 Line coverage: 7.44% (3790/50950 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
  • Other counters: instruction 5.84% (18719/320311), branch 2.78% (865/31131), complexity 3.48% (1037/29780), method 6.16% (855/13883), class 10.27% (189/1840)
  • Lowest covered classes
    • kotlin.collections.kotlin.collections.ArraysKt___ArraysKt – 0.00% (0/6327 lines covered)
    • kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2384 lines covered)
    • org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.ClassReader – 0.00% (0/1519 lines covered)
    • kotlin.collections.kotlin.collections.CollectionsKt___CollectionsKt – 0.00% (0/1148 lines covered)
    • org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.MethodWriter – 0.00% (0/923 lines covered)
    • kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/712 lines covered)
    • kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/623 lines covered)
    • org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.Frame – 0.00% (0/564 lines covered)
    • kotlin.collections.kotlin.collections.ArraysKt___ArraysJvmKt – 0.00% (0/495 lines covered)
    • kotlinx.coroutines.kotlinx.coroutines.JobSupport – 0.00% (0/423 lines covered)

✅ Native Android screenshot tests passed.

Native Android coverage

• 📊 Line coverage: 7.44% (3790/50950 lines covered) [HTML preview] (artifact android-coverage-report, jacocoAndroidReport/html/index.html)
  • Other counters: instruction 5.84% (18719/320311), branch 2.78% (865/31131), complexity 3.48% (1037/29780), method 6.16% (855/13883), class 10.27% (189/1840)
  • Lowest covered classes
    • kotlin.collections.kotlin.collections.ArraysKt___ArraysKt – 0.00% (0/6327 lines covered)
    • kotlin.collections.unsigned.kotlin.collections.unsigned.UArraysKt___UArraysKt – 0.00% (0/2384 lines covered)
    • org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.ClassReader – 0.00% (0/1519 lines covered)
    • kotlin.collections.kotlin.collections.CollectionsKt___CollectionsKt – 0.00% (0/1148 lines covered)
    • org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.MethodWriter – 0.00% (0/923 lines covered)
    • kotlin.sequences.kotlin.sequences.SequencesKt___SequencesKt – 0.00% (0/712 lines covered)
    • kotlin.text.kotlin.text.StringsKt___StringsKt – 0.00% (0/623 lines covered)
    • org.jacoco.agent.rt.internal_b6258fc.asm.org.jacoco.agent.rt.internal_b6258fc.asm.Frame – 0.00% (0/564 lines covered)
    • kotlin.collections.kotlin.collections.ArraysKt___ArraysJvmKt – 0.00% (0/495 lines covered)
    • kotlinx.coroutines.kotlinx.coroutines.JobSupport – 0.00% (0/423 lines covered)

[github-actions]

✅ ByteCodeTranslator Quality Report

Test & Coverage

• ✅ Tests: 138 total, 0 failed, 2 skipped

Benchmark Results

• Execution Time: 9292 ms

• Hotspots (Top 20 sampled methods):

  • 21.04% java.lang.String.indexOf (347 samples)
  • 19.65% com.codename1.tools.translator.Parser.isMethodUsed (324 samples)
  • 15.59% com.codename1.tools.translator.Parser.addToConstantPool (257 samples)
  • 9.52% java.util.ArrayList.indexOf (157 samples)
  • 3.76% com.codename1.tools.translator.ByteCodeClass.calcUsedByNative (62 samples)
  • 3.46% java.lang.Object.hashCode (57 samples)
  • 3.03% java.lang.System.identityHashCode (50 samples)
  • 2.91% com.codename1.tools.translator.ByteCodeClass.fillVirtualMethodTable (48 samples)
  • 1.33% com.codename1.tools.translator.BytecodeMethod.optimize (22 samples)
  • 1.33% sun.nio.fs.UnixNativeDispatcher.open0 (22 samples)
  • 1.27% com.codename1.tools.translator.BytecodeMethod.appendCMethodPrefix (21 samples)
  • 1.21% java.lang.StringBuilder.append (20 samples)
  • 1.09% com.codename1.tools.translator.Parser.cullMethods (18 samples)
  • 0.85% com.codename1.tools.translator.ByteCodeClass.markDependent (14 samples)
  • 0.85% com.codename1.tools.translator.Parser.generateClassAndMethodIndexHeader (14 samples)
  • 0.79% java.io.FileOutputStream.writeBytes (13 samples)
  • 0.61% com.codename1.tools.translator.BytecodeMethod.isMethodUsedByNative (10 samples)
  • 0.49% java.io.FileOutputStream.open0 (8 samples)
  • 0.42% org.objectweb.asm.ClassReader.readUTF8 (7 samples)
  • 0.42% java.lang.StringCoding.encode (7 samples)

• ⚠️ Coverage report not generated.

Static Analysis

• ✅ SpotBugs: no findings (report was not generated by the build).
• ⚠️ PMD report not generated.
• ⚠️ Checkstyle report not generated.

Generated automatically by the PR CI workflow.

[shai-almog]

iOS screenshot updates

Compared 32 screenshots: 31 matched, 1 updated.

• landscape — updated screenshot. Screenshot differs (2556x1179 px, bit depth 8).

  
  Preview info: Preview provided by instrumentation.
  Full-resolution PNG saved as landscape.png in workflow artifacts.

Benchmark Results

• VM Translation Time: 0 seconds
• Compilation Time: 100 seconds

Detailed Performance Metrics

Metric	Duration
Simulator Boot	0 ms
Simulator Boot (Run)	0 ms
App Install	4000 ms
App Launch	4000 ms
Test Execution	145000 ms