libkvs/test: Add extra treeobj corner case tests

src/common/libkvs/test/treeobj.c

@@ -88,6 +88,8 @@ void test_valref (void)
     errno = 0;
     ok (treeobj_get_blobref (valref, 0) == NULL && errno == EINVAL,
         "treeobj_get_blobref [0] fails with EINVAL");
+    ok (treeobj_append_blobref (valref, "foo") < 0 && errno == EINVAL,
+        "treeobj_append_blobref returns EINVAL on bad blobref");
     ok (treeobj_append_blobref (valref, blobrefs[0]) == 0,
         "treeobj_append_blobref works");
     ok (treeobj_validate (valref) == 0,
@@ -172,6 +174,13 @@ void test_val (void)
     ok (memcmp (buf, outbuf, outlen) == 0,
         "and returned data same as input");
     free (outbuf);
+    ok (treeobj_decode_val (val, (void **)&outbuf, NULL) == 0,
+        "treeobj_decode_val works w/o len input");
+    free (outbuf);
+    ok (treeobj_decode_val (val, NULL, &outlen) == 0,
+        "treeobj_decode_val works w/o data pointer input");
+    ok (outlen == sizeof (buf),
+        "and returned size same as input");
 
     ok ((val2 = treeobj_create_val (NULL, 0)) != NULL,
         "treeobj_create_val NULL, 0 works");
@@ -239,6 +248,8 @@ void test_dirref (void)
     errno = 0;
     ok (treeobj_get_blobref (dirref, 0) == NULL && errno == EINVAL,
         "treeobj_get_blobref [0] fails with EINVAL");
+    ok (treeobj_append_blobref (dirref, "foo") < 0 && errno == EINVAL,
+        "treeobj_append_blobref returns EINVAL on bad blobref");
     ok (treeobj_append_blobref (dirref, blobrefs[0]) == 0,
         "treeobj_append_blobref works");
     ok (treeobj_validate (dirref) == 0,
@@ -325,6 +336,15 @@ void test_dir (void)
         "treeobj_validate likes populated dir");
 
     errno = 0;
+    ok (treeobj_get_entry (val1, "foo") == NULL && errno == EINVAL,
+        "treeobj_get_entry fails with EINVAL on non-dir treeobj");
+    errno = 0;
+    ok (treeobj_delete_entry (val1, "foo") < 0 && errno == EINVAL,
+        "treeobj_delete_entry fails with EINVAL on non-dir treeobj");
+    errno = 0;
+    ok (treeobj_insert_entry (val1, "foo", val1) < 0 && errno == EINVAL,
+        "treeobj_insert_entry fails with EINVAL on non-dir treeobj");
+    errno = 0;
     ok (treeobj_insert_entry (dir, NULL, val1) < 0 && errno == EINVAL,
         "treeobj_insert_entry fails with EINVAL on NULL key");
     errno = 0;
@@ -449,21 +469,35 @@ void test_symlink (void)
     json_decref (o);
 }
 
-void test_validate (void)
+void test_corner_cases (void)
 {
     json_t *val, *valref, *dir, *symlink;
     json_t *array, *object;
+    char *outbuf;
+    int outlen;
 
     val = treeobj_create_val ("a", 1);
     if (!val)
         BAIL_OUT ("can't continue without test value");
 
+    ok (treeobj_append_blobref (val, blobrefs[0]) < 0 && errno == EINVAL,
+        "treeobj_append_blobref returns EINVAL on bad treeobj");
+
+    ok (treeobj_get_blobref (val, 0) == NULL && errno == EINVAL,
+        "treeobj_get_blobref returns EINVAL on bad treeobj");
+
     /* Modify val to have bad type */
     json_object_set_new (val, "type", json_string ("foo"));
 
     ok (treeobj_validate (val) < 0 && errno == EINVAL,
         "treeobj_validate detects invalid type");
 
+    ok (treeobj_get_count (val) < 0 && errno == EINVAL,
+        "treeobj_get_count detects invalid type");
+
+    ok (treeobj_decode (treeobj_encode (val)) == NULL && errno == EPROTO,
+        "treeobj_decode returns EPROTO on bad treeobj");
+
     json_decref (val);
 
     valref = treeobj_create_valref (NULL);
@@ -492,6 +526,10 @@ void test_validate (void)
     if (!dir)
         BAIL_OUT ("can't continue without test value");
 
+    ok (treeobj_decode_val (dir, (void **)&outbuf, &outlen) < 0
+        && errno == EINVAL,
+        "treeobj_decode_val returns EINVAL on non-val treeobj");
+
     /* Modify valref to have bad blobref */
     object = json_object ();
     json_object_set_new (object, "a", json_string ("foo"));
@@ -532,7 +570,7 @@ int main(int argc, char** argv)
     test_dir ();
     test_copy_dir ();
     test_symlink ();
-    test_validate ();
+    test_corner_cases ();
 
     test_codec ();