[infer][clang] fix name collision in the C tests

Summary:
There was a name collision between two files which was preventing to run the tests based on Makefile

infer/tests/codetoanalyze/c/errors/arithmetic/divide_by_zero.c

@@ -7,7 +7,7 @@
 * of patent rights can be found in the PATENTS file in the same directory.
  */
 
-int divide_by_zero() {
+int arith_divide_by_zero() {
   int x = 0;
   int y = 5;
   return y / x;

infer/tests/codetoanalyze/c/errors/initialization/initlistexpr.c

@@ -6,7 +6,8 @@
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
  */
-int divide_by_zero() {
+
+int init_divide_by_zero() {
     int t[2][3][2] = {{{1,1},{2,2},{3,3}},{{4,4},{5,5},{1,0}}};
     return t[0][1][0]/t[1][2][1];
 }

infer/tests/endtoend/c/DivideByZeroTest.java

@@ -37,7 +37,7 @@ public class DivideByZeroTest {
   @Test
   public void whenInferRunsOnDivideByZeroThenDivideByZeroIsFound()
       throws InterruptedException, IOException, InferException {
-    String[] procedures = {"divide_by_zero"};
+    String[] procedures = {"arith_divide_by_zero"};
     assertThat(
         "Results should contain divide by zero error",
         inferResults,

infer/tests/endtoend/c/InitListExprTest.java

@@ -10,7 +10,7 @@
 package endtoend.c;
 
 import static org.hamcrest.MatcherAssert.assertThat;
-import static utils.matchers.ResultContainsErrorInMethod.contains;
+import static utils.matchers.ResultContainsExactly.containsExactly;
 
 import com.google.common.collect.ImmutableList;
 
@@ -27,33 +27,31 @@ import utils.InferRunner;
 
 public class InitListExprTest {
 
-  public static final String initlistexpr_file =
+  public static final String SOURCE_FILE =
-      "infer/tests/" +
+      "initialization/initlistexpr.c";
-          "codetoanalyze/c/errors/initialization/initlistexpr.c";
-
-  private static ImmutableList<String> inferCmd;
 
   public static final String DIVIDE_BY_ZERO = "DIVIDE_BY_ZERO";
 
-  @ClassRule
+  private static InferResults inferResults;
-  public static DebuggableTemporaryFolder folder = new DebuggableTemporaryFolder();
 
   @BeforeClass
-  public static void runInfer() throws InterruptedException, IOException {
+  public static void loadResults() throws InterruptedException, IOException {
-    inferCmd = InferRunner.createCInferCommand(folder, initlistexpr_file);
+    inferResults = InferResults.loadCInferResults(InitListExprTest.class, SOURCE_FILE);
   }
 
   @Test
   public void whenInferRunsOnInitListExprThenDivideByZeroIsFound()
       throws InterruptedException, IOException, InferException {
-    InferResults inferResults = InferRunner.runInferC(inferCmd);
+    String[] methods = {
+      "init_divide_by_zero"
+    };
     assertThat(
-        "Results should contain divide by zero error",
+        "Results should contain " + DIVIDE_BY_ZERO,
         inferResults,
-        contains(
+        containsExactly(
             DIVIDE_BY_ZERO,
-            initlistexpr_file,
+            SOURCE_FILE,
-            "divide_by_zero"
+            methods
         )
     );
   }