Add serd_node_from_syntax() and serd_node_to_syntax()

3 files changed, 157 insertions, 2 deletions

diff --git a/test/meson.build b/test/meson.build
index 4d9d2b43..77a9ba57 100644
--- a/test/meson.build
+++ b/test/meson.build
@@ -12,6 +12,7 @@ unit_tests = [
   'free_null',
   'log',
   'node',
+  'node_syntax',
   'nodes',
   'overflow',
   'read_chunk',
diff --git a/test/test_node.c b/test/test_node.c
index 8de81e08..466655ef 100644
--- a/test/test_node.c
+++ b/test/test_node.c
@@ -429,7 +429,7 @@ test_node_equals(void)
 }
 
 static void
-test_node_from_string(void)
+test_node_from_syntax(void)
 {
   SerdNode* const hello = serd_new_string(SERD_STRING("hello\""));
   assert(serd_node_length(hello) == 6);
@@ -547,7 +547,7 @@ main(void)
   test_base64();
   test_get_base64();
   test_node_equals();
-  test_node_from_string();
+  test_node_from_syntax();
   test_node_from_substring();
   test_simple_node();
   test_literal();
diff --git a/test/test_node_syntax.c b/test/test_node_syntax.c
new file mode 100644
index 00000000..bb394c43
--- /dev/null
+++ b/test/test_node_syntax.c
@@ -0,0 +1,154 @@
+/*
+  Copyright 2020 David Robillard <d@drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#undef NDEBUG
+
+#include "serd/serd.h"
+
+#include <assert.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <string.h>
+
+static bool
+test(const SerdSyntax syntax, SerdNode* const node, const char* const expected)
+{
+  SerdEnv* const  env  = serd_env_new(SERD_STRING("http://example.org/base/"));
+  char* const     str  = serd_node_to_syntax(node, syntax, env);
+  SerdNode* const copy = serd_node_from_syntax(str, syntax, env);
+
+  const bool success = !strcmp(str, expected) && serd_node_equals(copy, node);
+
+  serd_node_free(copy);
+  serd_free(str);
+  serd_node_free(node);
+  serd_env_free(env);
+  return success;
+}
+
+static void
+test_common(const SerdSyntax syntax)
+{
+  static const int data[] = {4, 2};
+
+  static const SerdStringView datatype =
+    SERD_STRING("http://example.org/Datatype");
+
+  SerdNode* const num_type =
+    serd_new_uri(SERD_STRING("http://example.org/Decimal"));
+
+  assert(test(syntax, serd_new_string(SERD_STRING("node")), "\"node\""));
+
+  assert(test(syntax,
+              serd_new_plain_literal(SERD_STRING("hallo"), SERD_STRING("de")),
+              "\"hallo\"@de"));
+
+  assert(test(syntax,
+              serd_new_typed_literal(SERD_STRING("X"), datatype),
+              "\"X\"^^<http://example.org/Datatype>"));
+
+  assert(test(syntax, serd_new_blank(SERD_STRING("blank")), "_:blank"));
+  assert(test(syntax, serd_new_blank(SERD_STRING("b0")), "_:b0"));
+
+  assert(test(syntax,
+              serd_new_uri(SERD_STRING("http://example.org/")),
+              "<http://example.org/>"));
+
+  assert(test(syntax,
+              serd_new_decimal(1.25, num_type),
+              "\"1.25\"^^<http://example.org/Decimal>"));
+
+  assert(test(syntax,
+              serd_new_double(1.25),
+              "\"1.25E0\"^^<http://www.w3.org/2001/XMLSchema#double>"));
+
+  assert(test(syntax,
+              serd_new_float(1.25),
+              "\"1.25E0\"^^<http://www.w3.org/2001/XMLSchema#float>"));
+
+  assert(test(syntax,
+              serd_new_integer(1234, num_type),
+              "\"1234\"^^<http://example.org/Decimal>"));
+
+  assert(
+    test(syntax,
+         serd_new_base64(data, sizeof(data), NULL),
+         "\"BAAAAAIAAAA=\"^^<http://www.w3.org/2001/XMLSchema#base64Binary>"));
+
+  serd_node_free(num_type);
+}
+
+static void
+test_ntriples(void)
+{
+  test_common(SERD_NTRIPLES);
+
+  {
+    // No relative URIs in NTriples, so converting one fails without an env
+    SerdNode* const rel = serd_new_uri(SERD_STRING("rel/uri"));
+    assert(!serd_node_to_syntax(rel, SERD_NTRIPLES, NULL));
+    assert(!serd_node_from_syntax("<rel/uri>", SERD_NTRIPLES, NULL));
+
+    // If a relative URI can be expanded then all's well
+    SerdEnv* const env = serd_env_new(SERD_STRING("http://example.org/base/"));
+    char* const    str = serd_node_to_syntax(rel, SERD_NTRIPLES, env);
+    assert(!strcmp(str, "<http://example.org/base/rel/uri>"));
+
+    SerdNode* const copy = serd_node_from_syntax(str, SERD_NTRIPLES, env);
+    assert(!strcmp(serd_node_string(copy), "http://example.org/base/rel/uri"));
+
+    serd_node_free(copy);
+    serd_env_free(env);
+    serd_free(str);
+    serd_node_free(rel);
+  }
+
+  assert(test(SERD_NTRIPLES,
+              serd_new_decimal(1.25, NULL),
+              "\"1.25\"^^<http://www.w3.org/2001/XMLSchema#decimal>"));
+
+  assert(test(SERD_NTRIPLES,
+              serd_new_integer(1234, NULL),
+              "\"1234\"^^<http://www.w3.org/2001/XMLSchema#integer>"));
+
+  assert(test(SERD_NTRIPLES,
+              serd_new_boolean(true),
+              "\"true\"^^<http://www.w3.org/2001/XMLSchema#boolean>"));
+
+  assert(test(SERD_NTRIPLES,
+              serd_new_boolean(false),
+              "\"false\"^^<http://www.w3.org/2001/XMLSchema#boolean>"));
+}
+
+static void
+test_turtle(void)
+{
+  test_common(SERD_TURTLE);
+  test(SERD_TURTLE, serd_new_uri(SERD_STRING("rel/uri")), "<rel/uri>");
+  assert(test(SERD_TURTLE, serd_new_decimal(1.25, NULL), "1.25"));
+  assert(test(SERD_TURTLE, serd_new_integer(1234, NULL), "1234"));
+  assert(test(SERD_TURTLE, serd_new_boolean(true), "true"));
+  assert(test(SERD_TURTLE, serd_new_boolean(false), "false"));
+}
+
+int
+main(void)
+{
+  test_ntriples();
+  test_turtle();
+
+  return 0;
+}