JSONStream and tests

runtime/vm/json_test.cc

Index: runtime/vm/json_test.cc
diff --git a/runtime/vm/json_test.cc b/runtime/vm/json_test.cc
index 90c9fdfb4363e9b543be6a5cd25d4ee5cd53ec78..030a51947f2eecc15ccfe1aadd1bea03755145dc 100644
--- a/runtime/vm/json_test.cc
+++ b/runtime/vm/json_test.cc
@@ -4,6 +4,7 @@
 
 #include "platform/assert.h"
 #include "platform/json.h"
+#include "vm/json_stream.h"
 #include "vm/unit_test.h"
 
 namespace dart {
@@ -116,4 +117,65 @@ TEST_CASE(JSON_TextBuffer) {
   EXPECT(r.IsStringLiteral("stopIt"));
 }
 
+
+TEST_CASE(JSONStream_Primitives) {
+  TextBuffer tb(256);
+  JSONStream js(&tb);
+
+  js.OpenObject();
+  js.CloseObject();
+
+  EXPECT_STREQ("{}", tb.buf());
+
+  js.Clear();
+  js.OpenArray();
+  js.CloseArray();
+  EXPECT_STREQ("[]", tb.buf());
+
+  js.Clear();
+  js.PrintValueBool(true);
+  EXPECT_STREQ("true", tb.buf());
+
+  js.Clear();
+  js.PrintValueBool(false);
+  EXPECT_STREQ("false", tb.buf());
+
+  js.Clear();
+  js.PrintValue(4);
+  EXPECT_STREQ("4", tb.buf());
+
+  js.Clear();
+  js.PrintValue(1.0);
+  EXPECT_STREQ("1.000000", tb.buf());
+
+  js.Clear();
+  js.PrintValue("hello");
+  EXPECT_STREQ("\"hello\"", tb.buf());
+}
+
+
+TEST_CASE(JSONStream_Array) {
+  TextBuffer tb(256);
+  JSONStream js(&tb);
+  js.Clear();
+  js.OpenArray();
+  js.PrintValueBool(true);
+  js.PrintValueBool(false);
+  js.CloseArray();
+  EXPECT_STREQ("[true,false]", tb.buf());
+}
+
+
+TEST_CASE(JSONStream_Object) {
+  TextBuffer tb(256);
+  JSONStream js(&tb);
+  js.Clear();
+  js.OpenObject();
+  js.PrintProperty("key1", "a");
+  js.PrintProperty("key2", "b");
+  js.CloseObject();
+  EXPECT_STREQ("{\"key1\":\"a\",\"key2\":\"b\"}", tb.buf());
+}
+
+
 }  // namespace dart