JNI: Add calls to get field IDs

Task-number: QTBUG-92952
Change-Id: Ie68ede4b00a411064a29925b28b1f60a84d2d678
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>

2 files changed, 53 insertions, 0 deletions

diff --git a/tests/auto/corelib/kernel/qjnienvironment/testdata/src/org/qtproject/qt/android/testdata/QtJniEnvironmentTestClass.java b/tests/auto/corelib/kernel/qjnienvironment/testdata/src/org/qtproject/qt/android/testdata/QtJniEnvironmentTestClass.java
index 8f36dcc5fd..7bf6a7455a 100644
--- a/tests/auto/corelib/kernel/qjnienvironment/testdata/src/org/qtproject/qt/android/testdata/QtJniEnvironmentTestClass.java
+++ b/tests/auto/corelib/kernel/qjnienvironment/testdata/src/org/qtproject/qt/android/testdata/QtJniEnvironmentTestClass.java
@@ -33,6 +33,11 @@ public class QtJniEnvironmentTestClass
     private static native void callbackFromJava(String message);
     private static native void intCallbackFromJava(int value);
 
+    public final int INT_FIELD = 123;
+    public static final int S_INT_FIELD = 321;
+
+    QtJniEnvironmentTestClass() {}
+
     public static void appendJavaToString(String message)
     {
         callbackFromJava("From Java: " + message);
diff --git a/tests/auto/corelib/kernel/qjnienvironment/tst_qjnienvironment.cpp b/tests/auto/corelib/kernel/qjnienvironment/tst_qjnienvironment.cpp
index 06372ebad2..079de48948 100644
--- a/tests/auto/corelib/kernel/qjnienvironment/tst_qjnienvironment.cpp
+++ b/tests/auto/corelib/kernel/qjnienvironment/tst_qjnienvironment.cpp
@@ -49,6 +49,8 @@ private slots:
     void registerNativeMethodsByJclass();
     void findMethod();
     void findStaticMethod();
+    void findField();
+    void findStaticField();
 };
 
 void tst_QJniEnvironment::jniEnv()
@@ -203,6 +205,52 @@ void tst_QJniEnvironment::findStaticMethod()
     QVERIFY(!env.checkAndClearExceptions());
 }
 
+void tst_QJniEnvironment::findField()
+{
+    QJniEnvironment env;
+    jclass clazz = env.findClass(javaTestClass);
+    QVERIFY(clazz != nullptr);
+
+    // valid field
+    jfieldID validId = env.findField(clazz, "INT_FIELD", "I");
+    QVERIFY(validId != nullptr);
+
+    jmethodID constructorId = env.findMethod(clazz, "<init>", "()V");
+    QVERIFY(constructorId != nullptr);
+    jobject obj = env->NewObject(clazz, constructorId);
+    QVERIFY(!env.checkAndClearExceptions());
+    int value = env->GetIntField(obj, validId);
+    QVERIFY(!env.checkAndClearExceptions());
+    QVERIFY(value == 123);
+
+    // invalid signature
+    jfieldID invalidId = env.findField(clazz, "unknown", "I");
+    QVERIFY(invalidId == nullptr);
+    // check that all exceptions are already cleared
+    QVERIFY(!env.checkAndClearExceptions());
+}
+
+void tst_QJniEnvironment::findStaticField()
+{
+    QJniEnvironment env;
+    jclass clazz = env.findClass(javaTestClass);
+    QVERIFY(clazz != nullptr);
+
+    // valid field
+    jfieldID validId = env.findStaticField(clazz, "S_INT_FIELD", "I");
+    QVERIFY(validId != nullptr);
+
+    int size = env->GetStaticIntField(clazz, validId);
+    QVERIFY(!env.checkAndClearExceptions());
+    QVERIFY(size == 321);
+
+    // invalid signature
+    jfieldID invalidId = env.findStaticField(clazz, "unknown", "I");
+    QVERIFY(invalidId == nullptr);
+    // check that all exceptions are already cleared
+    QVERIFY(!env.checkAndClearExceptions());
+}
+
 QTEST_MAIN(tst_QJniEnvironment)
 
 #include "tst_qjnienvironment.moc"