cleanup the Java divide by zero end-to-end test

Summary:public
This just simplifies the end-to-end tests for Dividde By Zero to make the debugging easier when this test fails.

Reviewed By: cristianoc

Differential Revision: D2966296

fb-gh-sync-id: 5eaa1b5
shipit-source-id: 5eaa1b5

infer/tests/endtoend/java/infer/DivideByZeroTest.java

@@ -10,9 +10,7 @@
 package endtoend.java.infer;
 
 import static org.hamcrest.MatcherAssert.assertThat;
-import static utils.matchers.ResultContainsErrorInMethod.contains;
-import static utils.matchers.ResultContainsLineNumbers.containsLines;
-import static utils.matchers.ResultContainsOnlyTheseErrors.containsOnly;
+import static utils.matchers.ResultContainsExactly.containsExactly;
 
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -24,7 +22,7 @@ import utils.InferResults;
 
 public class DivideByZeroTest {
 
-  public static final String DivideByZero =
+  public static final String SOURCE_FILE =
       "infer/tests/codetoanalyze/java/infer/DivideByZero.java";
 
   public static final String DIVIDE_BY_ZERO = "DIVIDE_BY_ZERO";
@@ -33,74 +31,22 @@ public class DivideByZeroTest {
 
   @BeforeClass
   public static void loadResults() throws InterruptedException, IOException {
-    inferResults = InferResults.loadInferResults(DivideByZeroTest.class, DivideByZero);
+    inferResults = InferResults.loadInferResults(DivideByZeroTest.class, SOURCE_FILE);
   }
 
   @Test
-  public void whenInferRunsOnDivideByZeroLocalThenDivideByZeroErrorFound()
-      throws InterruptedException, IOException, InferException {
-    assertThat(
-        "Results should contain divide by zero error.", inferResults,
-        contains(
-            DIVIDE_BY_ZERO,
-            DivideByZero,
-            "divByZeroLocal"
-        )
-    );
-  }
-
-  @Test
-  public void whenInferRunsOnCallDivideByZeroInterProcThenDivideByZeroErrorFound()
-      throws InterruptedException, IOException, InferException {
-    assertThat(
-        "Results should contain divide by zero error.",
-        inferResults,
-        contains(
-            DIVIDE_BY_ZERO,
-            DivideByZero,
-            "callDivideByZeroInterProc"
-        )
-    );
-  }
-
-  @Test
-  public void whenInferRunsOnDivideByZeroWithStaticFieldThenDivideByZeroErrorFound()
-      throws InterruptedException, IOException, InferException {
-    assertThat(
-        "Results should contain divide by zero error.",
-        inferResults,
-        contains(
-            DIVIDE_BY_ZERO,
-            DivideByZero,
-            "divideByZeroWithStaticField"
-        )
-    );
-  }
-
-  @Test
-  public void whenInferRunsOnDivideByZeroThenTheLineNumbersAreReportedCorr()
-      throws InterruptedException, IOException, InferException {
-    int[] lines = {28};
-    assertThat(
-        "Result should contain correct line numbers.",
-        inferResults,
-        containsLines(lines));
-  }
-
-  @Test
-  public void whenInferRunsOnDivideByZeroThenOnlyTheExpectedErrorsAreFound()
-      throws InterruptedException, IOException, InferException {
-    String[] expectedMethods = {
+  public void matchErrors()
+    throws IOException, InterruptedException, InferException {
+    String[] methods = {
       "divByZeroLocal",
       "callDivideByZeroInterProc",
-        "divideByZeroWithStaticField"
+      "divideByZeroWithStaticField",
     };
-    assertThat(
-        "No unexpected errors should be found", inferResults,
-        containsOnly(
-            DIVIDE_BY_ZERO,
-            DivideByZero,
-            expectedMethods));
+    assertThat("Results should contain " + DIVIDE_BY_ZERO,
+               inferResults,
+               containsExactly(DIVIDE_BY_ZERO,
+                               SOURCE_FILE,
+                               methods));
   }
 
 }