Migrate usages of Truth8.assertThat to equivalent usages of `Truth.…

…assertThat`.

The `Truth8` methods will be hidden in the future. All callers will use `Truth`.

PiperOrigin-RevId: 604692296

src/test/java/com/google/testing/compile/CompilationTest.java

@@ -23,7 +23,6 @@
 import static org.junit.Assert.fail;
 
 import com.google.common.collect.ImmutableList;
-import com.google.common.truth.Truth8;
 import javax.tools.JavaFileObject;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -75,23 +74,21 @@ public void compilerStatusFailure() {
   public void generatedFilePath() {
     Compiler compiler = compilerWithGenerator();
     Compilation compilation = compiler.compile(source1, source2);
-    Truth8.assertThat(compilation.generatedFile(SOURCE_OUTPUT, "test/generated/Blah.java"))
-        .isPresent();
+    assertThat(compilation.generatedFile(SOURCE_OUTPUT, "test/generated/Blah.java")).isPresent();
   }
 
   @Test
   public void generatedFilePackage() {
     Compiler compiler = compilerWithGenerator();
     Compilation compilation = compiler.compile(source1, source2);
-    Truth8.assertThat(compilation.generatedFile(SOURCE_OUTPUT, "test.generated", "Blah.java"))
-        .isPresent();
+    assertThat(compilation.generatedFile(SOURCE_OUTPUT, "test.generated", "Blah.java")).isPresent();
   }
 
   @Test
   public void generatedSourceFile() {
     Compiler compiler = compilerWithGenerator();
     Compilation compilation = compiler.compile(source1, source2);
-    Truth8.assertThat(compilation.generatedSourceFile("test.generated.Blah")).isPresent();
+    assertThat(compilation.generatedSourceFile("test.generated.Blah")).isPresent();
   }
 
   private static Compiler compilerWithGenerator() {