[infer][eradicate] Fix eradicate tests for field not initialized

Summary:
This test was actually testing: "at least one Field not initialized error is found" where we actualy want to test "exactly one Field not initialized error is found". The case of @Inject was also missing from the tests.

dependencies/java/jsr-330/BUCK

@@ -0,0 +1,7 @@
+prebuilt_jar(
+  name = 'jsr-330',
+  binary_jar = 'javax.inject.jar',
+  visibility = [
+    'PUBLIC',
+  ],
+)

infer/tests/codetoanalyze/java/eradicate/BUCK

@@ -4,6 +4,7 @@ dependencies = [
     '//infer/annotations:annotations',
     '//infer/lib/java/android:android',
     '//dependencies/java/jsr-305:jsr-305',
+    '//dependencies/java/jsr-330:jsr-330',
 ]
 
 java_library(

infer/tests/codetoanalyze/java/eradicate/FieldNotInitialized.java

@@ -11,15 +11,19 @@ package codetoanalyze.java.eradicate;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+import javax.inject.Inject;
 
 public class FieldNotInitialized {
 
-  @Nullable
+  String a;
-  String x;
+
-  String y;
+  @Nullable String b;
-  @Nonnull
+
-  String z; // Means: assume it's initialized to nonnull value somewhere else.
+  @Nonnull String c; // Means: assume it will be initialized to a nonnull value somewhere else.
+
+  @Inject String d; // Means: assume it will be initialized via dependency injection
+
+  //  Eradicate should only report one initialization error
+  FieldNotInitialized() {}
 
-  FieldNotInitialized() {
-  }
 }

infer/tests/endtoend/java/eradicate/FieldNotInitializedTest.java

@@ -10,7 +10,7 @@
 package endtoend.java.eradicate;
 
 import static org.hamcrest.MatcherAssert.assertThat;
-import static utils.matchers.ResultContainsExactly.containsExactly;
+import static utils.matchers.ResultContainsNumberOfErrorsInMethod.containsNumberOfErrors;
 
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -39,16 +39,14 @@ public class FieldNotInitializedTest {
   @Test
   public void matchErrors()
       throws IOException, InterruptedException, InferException {
-    String[] methods = {
-        "<init>",
-    };
     assertThat(
         "Results should contain " + FIELD_NOT_INITIALIZED,
         inferResults,
-        containsExactly(
+        containsNumberOfErrors(
             FIELD_NOT_INITIALIZED,
             SOURCE_FILE,
-            methods));
+            "<init>",
+            1));
   }
 
 }