Finish implementing new JSON writer

1 files changed, 141 insertions, 0 deletions

diff --git a/json/write_test.go b/json/write_test.go
index 508ccfa..05b228e 100644
--- a/json/write_test.go
+++ b/json/write_test.go
@@ -103,3 +103,144 @@ func TestNavigateTo(t *testing.T) {
 		}
 	}
 }
+
+func TestWrite(t *testing.T) {
+	type testCase struct {
+		values []walk.Value
+		expected string
+	}
+
+	tests := []testCase {
+		{
+			values: []walk.Value {
+				walk.MapValue {{
+					Key: "a",
+					Value: walk.MapValue {{
+						Key: "b",
+						Value: walk.StringValue("c"),
+					}},
+				}},
+			},
+			expected: `{"a":{"b":"c"}}`,
+		},
+		{
+			values: []walk.Value {
+				walk.MapValue {{
+					Key: "a",
+					Value: walk.MapValue {{
+						Key: "b",
+						Value: walk.StringValue("c"),
+					}},
+				}},
+				walk.MapValue {{
+					Key: "a",
+					Value: walk.MapValue {{
+						Key: "d",
+						Value: walk.NullValue{},
+					}},
+				}},
+				walk.MapValue {{
+					Key: "a",
+					Value: walk.MapValue{},
+				}},
+				walk.MapValue {{
+					Key: "a",
+					Value: walk.MapValue {{
+						Key: "e",
+						Value: walk.NumberValue(-4.3),
+					}},
+				}},
+			},
+			expected: `{"a":{"b":"c","d":null,"e":-4.3}}`,
+		},
+		{
+			values: []walk.Value {
+				walk.MapValue {{
+					Key: "a",
+					Value: walk.MapValue{{
+						Key: "aa",
+						Value: walk.StringValue("aav"),
+					}},
+				}},
+				walk.MapValue {{
+					Key: "a",
+					Value: walk.MapValue{},
+				}, {
+					Key: "b",
+					Value: walk.MapValue {{
+						Key: "bb",
+						Value: walk.StringValue("bbv"),
+					}},
+				}, {
+					Key: "c",
+					Value: walk.MapValue{},
+				}},
+				walk.MapValue {{
+					Key: "c",
+					Value: walk.MapValue {{
+						Key: "cc",
+						Value: walk.StringValue("ccv"),
+					}},
+				}},
+			},
+			expected: `{"a":{"aa":"aav"},"b":{"bb":"bbv"},"c":{"cc":"ccv"}}`,
+		},
+		{
+			values: []walk.Value {
+				walk.ArrayValue {{
+					Index: 0,
+					Value: walk.ArrayValue {{
+						Index: 5,
+						Value: walk.NumberValue(100),
+					}},
+				}},
+				walk.ArrayValue {{
+					Index: 0,
+					Value: walk.ArrayValue{},
+				}, {
+					Index: 0,
+					Value: walk.ArrayValue{},
+				}},
+				walk.ArrayValue {{
+					Index: 0,
+					Value: walk.NullValue{},
+				}, {
+					Index: 0,
+					Value: walk.ArrayValue{},
+				}},
+				walk.ArrayValue {{
+					Index: 0,
+					Value: walk.ArrayValue{},
+				}},
+				walk.ArrayValue {{
+					Index: 0,
+					Value: walk.ArrayValue {{
+						Index: 200,
+						Value: walk.NumberValue(200),
+					}},
+				}},
+			},
+			expected: `[[100],[],null,[200]]`,
+		},
+	}
+
+	for i, test := range tests {
+		var writer strings.Builder
+		jsonWriter := &JSONWriter {
+			path: nil,
+			writer: bufio.NewWriter(&writer),
+			state: JSONWriterStateBeforeValue,
+		}
+
+		for _, value := range test.values {
+			jsonWriter.Write(value)
+		}
+		jsonWriter.AssertDone()
+
+		jsonWriter.writer.Flush()
+		res := writer.String()
+		if res != test.expected {
+			t.Errorf(`Test %d: Expected '%s' found '%s'`, i, test.expected, res)
+		}
+	}
+}