Add tests for .equals and toString

Test: hidl_test
Test: hidl_test_java

Bug: 32834072
Bug: 33459772
Change-Id: Ic1a87529fe5f8c12f7bfbdc2fa668e66922e075f

tests/baz/1.0/IBaz.hal

@@ -21,6 +21,14 @@ import IBazCallback;
 
 interface IBaz extends IBase {
 
+    enum BitField : uint8_t {
+        V0 = 1 << 0,
+        V1 = 1 << 1,
+        V2 = 1 << 2,
+        V3 = 1 << 3,
+        VALL = V0 | V1 | V2 | V3,
+    };
+
     enum SomeOtherEnum : uint8_t {
         bar = 66
     };
@@ -45,6 +53,21 @@ interface IBaz extends IBase {
         vec<T> matrices;
     };
 
+    struct Quux {
+        string first;
+        string last;
+    };
+    struct Everything {
+        int8_t number;
+        int32_t anotherNumber;
+        string s;
+        vec<string> vs;
+        string[2][2] multidimArray;
+        string[3] sArray;
+        Quux anotherStruct;
+        bitfield<BitField> bf;
+    };
+
     @Fragile @NoReally(very="yes", array={"a","b","c"})
     oneway doThis(float param);
 

tests/foo/1.0/IFoo.hal

@@ -38,6 +38,7 @@ interface IFoo {
         V1 = 1 << 1,
         V2 = 1 << 2,
         V3 = 1 << 3,
+        VALL = V0 | V1 | V2 | V3,
     };
 
     struct Fumble {