Copy remaining Truth8.assertThat overloads to the main Truth clas…

…s—except `Path` and `OptionalLong`.

We'll post some migration suggestions as part of the release notes.

This is the biggest remaining part of #746, but some loose ends remain.

RELNOTES=Added most remaining `Truth8.assertThat` overloads to the main `Truth` class.
PiperOrigin-RevId: 603361985

core/src/main/java/com/google/common/truth/Truth.java

@@ -24,6 +24,10 @@
 import java.math.BigDecimal;
 import java.util.Map;
 import java.util.Optional;
+import java.util.OptionalDouble;
+import java.util.OptionalInt;
+import java.util.stream.IntStream;
+import java.util.stream.LongStream;
 import java.util.stream.Stream;
 import org.checkerframework.checker.nullness.qual.Nullable;
 
@@ -251,24 +255,59 @@ public static TableSubject assertThat(@Nullable Table<?, ?, ?> actual) {
     return assert_().that(actual);
   }
 
-  @SuppressWarnings("Java7ApiChecker") // no more dangerous that wherever the user got the Optional
-  @GwtIncompatible // creates ambiguities (Eclipse bug 577808 or similar?)
   /**
    * @since 1.3.0 (present in {@link Truth8} since before 1.0)
    */
+  @SuppressWarnings({
+    "Java7ApiChecker", // no more dangerous than wherever the user got the Optional
+    "NullableOptional", // Truth always accepts nulls, no matter the type
+  })
   public static <T> OptionalSubject assertThat(@Nullable Optional<T> actual) {
     return assert_().that(actual);
   }
 
-  @SuppressWarnings("Java7ApiChecker") // no more dangerous that wherever the user got the Stream
-  @GwtIncompatible // creates ambiguities (Eclipse bug 577808 or similar?)
   /**
    * @since 1.3.0 (present in {@link Truth8} since before 1.0)
    */
+  @SuppressWarnings("Java7ApiChecker") // no more dangerous than wherever the user got the Stream
+  public static OptionalIntSubject assertThat(@Nullable OptionalInt actual) {
+    return assert_().that(actual);
+  }
+
+  /**
+   * @since 1.4.0 (present in {@link Truth8} since before 1.0)
+   */
+  @SuppressWarnings("Java7ApiChecker") // no more dangerous than wherever the user got the Stream
+  public static OptionalDoubleSubject assertThat(@Nullable OptionalDouble actual) {
+    return assert_().that(actual);
+  }
+
+  /**
+   * @since 1.4.0 (present in {@link Truth8} since before 1.0)
+   */
+  @SuppressWarnings("Java7ApiChecker") // no more dangerous than wherever the user got the Stream
   public static <T extends @Nullable Object> StreamSubject assertThat(@Nullable Stream<T> actual) {
     return assert_().that(actual);
   }
 
+  /**
+   * @since 1.4.0 (present in {@link Truth8} since before 1.0)
+   */
+  @SuppressWarnings("Java7ApiChecker") // no more dangerous than wherever the user got the Stream
+  public static IntStreamSubject assertThat(@Nullable IntStream actual) {
+    return assert_().that(actual);
+  }
+
+  /**
+   * @since 1.4.0 (present in {@link Truth8} since before 1.0)
+   */
+  @SuppressWarnings("Java7ApiChecker") // no more dangerous than wherever the user got the Stream
+  public static LongStreamSubject assertThat(@Nullable LongStream actual) {
+    return assert_().that(actual);
+  }
+
+  // TODO(b/64757353): Add support for DoubleStream?
+
   /**
    * An {@code AssertionError} that (a) always supports a cause, even under old versions of Android
    * and (b) omits "java.lang.AssertionError:" from the beginning of its toString() representation.

core/src/test/java/com/google/common/truth/TruthAssertThatTest.java

@@ -26,11 +26,7 @@
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
 import java.nio.file.Path;
-import java.util.OptionalDouble;
-import java.util.OptionalInt;
 import java.util.OptionalLong;
-import java.util.stream.IntStream;
-import java.util.stream.LongStream;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
@@ -52,10 +48,6 @@ public void staticAssertThatMethodsMatchStandardSubjectBuilderInstanceMethods()
         FluentIterable.from(asList(StandardSubjectBuilder.class.getMethods()))
             .filter(input -> input.getName().equals("that"))
             // TODO: b/166630734 - Remove this when we add the assertThat overloads.
-            .filter(input -> input.getParameterTypes()[0] != IntStream.class)
-            .filter(input -> input.getParameterTypes()[0] != LongStream.class)
-            .filter(input -> input.getParameterTypes()[0] != OptionalDouble.class)
-            .filter(input -> input.getParameterTypes()[0] != OptionalInt.class)
             .filter(input -> input.getParameterTypes()[0] != OptionalLong.class)
             .filter(input -> input.getParameterTypes()[0] != Path.class)
             .transform(TruthAssertThatTest::methodToReturnTypeToken)