Clang-format c/cpp files in test directory (#4192)

This clang-formats c/cpp files in test/ directory, and updates
clang-format-diff.sh so that it does not ignore test/ directory anymore.

bigswitch.cpp is excluded from formatting, because there are big
commented-out code blocks, and apparently clang-format messes up
formatting in them. Also to make matters worse, different clang-format
versions do different things on those commented-out code blocks.

1 files changed, 67 insertions, 36 deletions

diff --git a/test/control_flow.cpp b/test/control_flow.cpp
index 504db2646..c2c51b24d 100644
--- a/test/control_flow.cpp
+++ b/test/control_flow.cpp
@@ -1,23 +1,26 @@
-#include <cmath>
 #include <algorithm>
+#include <cmath>
 #include <emscripten.h>
 
 extern "C" {
 
 int EMSCRIPTEN_KEEPALIVE check_if(int x) {
-  if (x < 10) x++;
+  if (x < 10)
+    x++;
   return x;
 }
 
 int EMSCRIPTEN_KEEPALIVE check_loop(int x) {
-  while (x < 100) x *= 2;
+  while (x < 100)
+    x *= 2;
   return x;
 }
 
 int EMSCRIPTEN_KEEPALIVE check_loop_break(int x) {
   while (x < 100) {
     x *= 2;
-    if (x > 30) break;
+    if (x > 30)
+      break;
     x++;
   }
   return x;
@@ -26,7 +29,8 @@ int EMSCRIPTEN_KEEPALIVE check_loop_break(int x) {
 int EMSCRIPTEN_KEEPALIVE check_loop_continue(int x) {
   while (x < 100) {
     x *= 2;
-    if (x > 30) continue;
+    if (x > 30)
+      continue;
     x++;
   }
   return x;
@@ -35,9 +39,11 @@ int EMSCRIPTEN_KEEPALIVE check_loop_continue(int x) {
 int EMSCRIPTEN_KEEPALIVE check_do_loop(int x) {
   do {
     x *= 2;
-    if (x > 1000) break;
+    if (x > 1000)
+      break;
     x--;
-    if (x > 30) continue;
+    if (x > 30)
+      continue;
     x++;
   } while (x < 100);
   return x;
@@ -46,9 +52,11 @@ int EMSCRIPTEN_KEEPALIVE check_do_loop(int x) {
 int EMSCRIPTEN_KEEPALIVE check_do_once(int x) {
   do {
     x *= 2;
-    if (x > 1000) break;
+    if (x > 1000)
+      break;
     x--;
-    if (x > 30) continue;
+    if (x > 30)
+      continue;
     x++;
   } while (0);
   return x;
@@ -57,9 +65,11 @@ int EMSCRIPTEN_KEEPALIVE check_do_once(int x) {
 int EMSCRIPTEN_KEEPALIVE check_while_forever(int x) {
   while (1) {
     x *= 2;
-    if (x > 1000) break;
+    if (x > 1000)
+      break;
     x--;
-    if (x > 30) continue;
+    if (x > 30)
+      continue;
     x++;
   }
   return x;
@@ -67,51 +77,72 @@ int EMSCRIPTEN_KEEPALIVE check_while_forever(int x) {
 
 int EMSCRIPTEN_KEEPALIVE check_switch(int x) {
   switch (x) {
-    case 1: return 10;
-    case 3: return 20;
-    case 5: return 30;
-    case 10: return 40;
-    case 11: return 50;
-    default: return 60;
+    case 1:
+      return 10;
+    case 3:
+      return 20;
+    case 5:
+      return 30;
+    case 10:
+      return 40;
+    case 11:
+      return 50;
+    default:
+      return 60;
   }
   return 70;
 }
 
 int EMSCRIPTEN_KEEPALIVE check_switch_nodefault(int x) {
   switch (x) {
-    case 1: return 10;
-    case 3: return 20;
-    case 5: return 30;
-    case 10: return 40;
-    case 11: return 50;
+    case 1:
+      return 10;
+    case 3:
+      return 20;
+    case 5:
+      return 30;
+    case 10:
+      return 40;
+    case 11:
+      return 50;
   }
   return 70;
 }
 
 int EMSCRIPTEN_KEEPALIVE check_switch_rdefault(int x) {
   switch (x) {
-    default: return -60;
-    case 1: return 10;
-    case 3: return 20;
-    case 5: return 30;
-    case 10: return 40;
-    case 11: return 50;
+    default:
+      return -60;
+    case 1:
+      return 10;
+    case 3:
+      return 20;
+    case 5:
+      return 30;
+    case 10:
+      return 40;
+    case 11:
+      return 50;
   }
   return 70;
 }
 
 int EMSCRIPTEN_KEEPALIVE check_switch_fallthrough(int x) {
   switch (x) {
-    case 1: return 10;
+    case 1:
+      return 10;
     case 2:
-    case 3: x++;
-    case 5: return x;
-    case 10: return 40;
-    case 11: return 50;
-    default: return 60;
+    case 3:
+      x++;
+    case 5:
+      return x;
+    case 10:
+      return 40;
+    case 11:
+      return 50;
+    default:
+      return 60;
   }
   return 70;
 }
-
 }
-