Add json encoding test + fix enum not being set on success.

core/encoding/json/marshal.odin

@@ -18,7 +18,7 @@ Marshal_Error :: union {
 
 marshal :: proc(v: any, allocator := context.allocator) -> (data: []byte, err: Marshal_Error) {
 	b := strings.make_builder(allocator)
-	defer if err != nil || data == nil {
+	defer if err != .None {
 		strings.destroy_builder(&b)
 	}
 
@@ -27,7 +27,7 @@ marshal :: proc(v: any, allocator := context.allocator) -> (data: []byte, err: M
 	if len(b.buf) != 0 {
 		data = b.buf[:]
 	}
-	return
+	return data, .None
 }
 
 marshal_to_builder :: proc(b: ^strings.Builder, v: any) -> Marshal_Error {

core/encoding/json/parser.odin

@@ -106,6 +106,7 @@ parse_comma :: proc(p: ^Parser) -> (do_break: bool) {
 }
 
 parse_value :: proc(p: ^Parser) -> (value: Value, err: Error) {
+	err = .None
 	token := p.curr_token
 	#partial switch token.kind {
 	case .Null:
@@ -175,6 +176,7 @@ parse_value :: proc(p: ^Parser) -> (value: Value, err: Error) {
 }
 
 parse_array :: proc(p: ^Parser) -> (value: Value, err: Error) {
+	err = .None
 	expect_token(p, .Open_Bracket) or_return
 
 	array: Array
@@ -266,15 +268,14 @@ parse_object_body :: proc(p: ^Parser, end_token: Token_Kind) -> (obj: Object, er
 			break
 		}
 	}	
-	return
+	return obj, .None
 }
 
 parse_object :: proc(p: ^Parser) -> (value: Value, err: Error) {
 	expect_token(p, .Open_Brace) or_return
 	obj := parse_object_body(p, .Close_Brace) or_return
 	expect_token(p, .Close_Brace) or_return
-	value = obj
+	return obj, .None
-	return
 }
 
 

tests/core/build.bat

@@ -30,4 +30,9 @@ echo ---
 echo ---
 echo Running core:crypto hash tests
 echo ---
-%PATH_TO_ODIN% run crypto %COMMON%
+%PATH_TO_ODIN% run crypto %COMMON%
+
+echo ---
+echo Running core:encoding tests
+echo ---
+%PATH_TO_ODIN% run encoding %COMMON%

tests/core/encoding/test_core_json.odin

@@ -0,0 +1,90 @@
+package test_core_json
+
+import "core:encoding/json"
+import "core:testing"
+import "core:fmt"
+
+TEST_count := 0
+TEST_fail  := 0
+
+when ODIN_TEST {
+    expect  :: testing.expect
+    log     :: testing.log
+} else {
+    expect  :: proc(t: ^testing.T, condition: bool, message: string, loc := #caller_location) {
+        fmt.printf("[%v] ", loc)
+        TEST_count += 1
+        if !condition {
+            TEST_fail += 1
+            fmt.println(message)
+            return
+        }
+        fmt.println(" PASS")
+    }
+    log     :: proc(t: ^testing.T, v: any, loc := #caller_location) {
+        fmt.printf("[%v] ", loc)
+        fmt.printf("log: %v\n", v)
+    }
+}
+
+main :: proc() {
+    t := testing.T{}
+	
+	parse_json(&t)
+	marshal_json(&t)
+
+    fmt.printf("%v/%v tests successful.\n", TEST_count - TEST_fail, TEST_count)
+}
+
+@test
+parse_json :: proc(t: ^testing.T) {
+   
+	json_data := `
+	{
+	  "firstName": "John",
+	  "lastName": "Smith",
+	  "isAlive": true,
+	  "age": 27,
+	  "address": {
+		"streetAddress": "21 2nd Street",
+		"city": "New York",
+		"state": "NY",
+		"postalCode": "10021-3100"
+	  },
+	  "phoneNumbers": [
+		{
+		  "type": "home",
+		  "number": "212 555-1234"
+		},
+		{
+		  "type": "office",
+		  "number": "646 555-4567"
+		}
+	  ],
+	  "children": [],
+	  "spouse": null
+	}
+	`
+   
+	_, err := json.parse(transmute([]u8)json_data)
+
+	expect(t, err == .None, "expected json error to be none")
+}
+
+@test
+marshal_json :: proc(t: ^testing.T) {
+   
+	My_Struct :: struct {
+		a: int,
+		b: int,
+	}
+   
+	my_struct := My_Struct {
+		a = 2,
+		b = 5,
+	}
+   
+	_, err := json.marshal(my_struct)
+	
+	expect(t, err == .None, "expected json error to be none")
+}