feat: add readJson/readJsonSync for fs modules (denoland/deno_std#269)

Original: https://github.com/denoland/deno_std/commit/e4485d722ac978c023f9f6720734264e99e1577f

1 files changed, 91 insertions, 0 deletions

diff --git a/fs/read_json_test.ts b/fs/read_json_test.ts
new file mode 100644
index 000000000..46ce1ec08
--- /dev/null
+++ b/fs/read_json_test.ts
@@ -0,0 +1,91 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { test } from "../testing/mod.ts";
+import {
+  assertEquals,
+  assertThrowsAsync,
+  assertThrows
+} from "../testing/asserts.ts";
+import { readJson, readJsonSync } from "./read_json.ts";
+import * as path from "./path/mod.ts";
+
+const testdataDir = path.resolve("fs", "testdata");
+
+test(async function readJsonFileNotExists() {
+  const emptyJsonFile = path.join(testdataDir, "json_not_exists.json");
+
+  await assertThrowsAsync(async () => {
+    await readJson(emptyJsonFile);
+  });
+});
+
+test(async function readEmptyJsonFile() {
+  const emptyJsonFile = path.join(testdataDir, "json_empty.json");
+
+  await assertThrowsAsync(async () => {
+    await readJson(emptyJsonFile);
+  });
+});
+
+test(async function readInvalidJsonFile() {
+  const invalidJsonFile = path.join(testdataDir, "json_invalid.json");
+
+  await assertThrowsAsync(async () => {
+    await readJson(invalidJsonFile);
+  });
+});
+
+test(async function readValidJsonFile() {
+  const invalidJsonFile = path.join(testdataDir, "json_valid_array.json");
+
+  const json = await readJson(invalidJsonFile);
+
+  assertEquals(json, ["1", "2", "3"]);
+});
+
+test(async function readValidJsonFile() {
+  const invalidJsonFile = path.join(testdataDir, "json_valid_obj.json");
+
+  const json = await readJson(invalidJsonFile);
+
+  assertEquals(json, { key1: "value1", key2: "value2" });
+});
+
+test(function readJsonFileNotExistsSync() {
+  const emptyJsonFile = path.join(testdataDir, "json_not_exists.json");
+
+  assertThrows(() => {
+    readJsonSync(emptyJsonFile);
+  });
+});
+
+test(function readEmptyJsonFileSync() {
+  const emptyJsonFile = path.join(testdataDir, "json_empty.json");
+
+  assertThrows(() => {
+    readJsonSync(emptyJsonFile);
+  });
+});
+
+test(function readInvalidJsonFile() {
+  const invalidJsonFile = path.join(testdataDir, "json_invalid.json");
+
+  assertThrows(() => {
+    readJsonSync(invalidJsonFile);
+  });
+});
+
+test(function readValidJsonFile() {
+  const invalidJsonFile = path.join(testdataDir, "json_valid_array.json");
+
+  const json = readJsonSync(invalidJsonFile);
+
+  assertEquals(json, ["1", "2", "3"]);
+});
+
+test(function readValidJsonFile() {
+  const invalidJsonFile = path.join(testdataDir, "json_valid_obj.json");
+
+  const json = readJsonSync(invalidJsonFile);
+
+  assertEquals(json, { key1: "value1", key2: "value2" });
+});