1 files changed, 109 insertions, 0 deletions
diff --git a/std/fs/read_json_test.ts b/std/fs/read_json_test.ts
new file mode 100644
index 000000000..28f733055
--- /dev/null
+++ b/std/fs/read_json_test.ts
@@ -0,0 +1,109 @@
+// 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(): Promise<void> {
+  const emptyJsonFile = path.join(testdataDir, "json_not_exists.json");
+
+  await assertThrowsAsync(
+    async (): Promise<void> => {
+      await readJson(emptyJsonFile);
+    }
+  );
+});
+
+test(async function readEmptyJsonFile(): Promise<void> {
+  const emptyJsonFile = path.join(testdataDir, "json_empty.json");
+
+  await assertThrowsAsync(
+    async (): Promise<void> => {
+      await readJson(emptyJsonFile);
+    }
+  );
+});
+
+test(async function readInvalidJsonFile(): Promise<void> {
+  const invalidJsonFile = path.join(testdataDir, "json_invalid.json");
+
+  await assertThrowsAsync(
+    async (): Promise<void> => {
+      await readJson(invalidJsonFile);
+    }
+  );
+});
+
+test(async function readValidArrayJsonFile(): Promise<void> {
+  const invalidJsonFile = path.join(testdataDir, "json_valid_array.json");
+
+  const json = await readJson(invalidJsonFile);
+
+  assertEquals(json, ["1", "2", "3"]);
+});
+
+test(async function readValidObjJsonFile(): Promise<void> {
+  const invalidJsonFile = path.join(testdataDir, "json_valid_obj.json");
+
+  const json = await readJson(invalidJsonFile);
+
+  assertEquals(json, { key1: "value1", key2: "value2" });
+});
+
+test(async function readValidObjJsonFileWithRelativePath(): Promise<void> {
+  const json = await readJson("./fs/testdata/json_valid_obj.json");
+
+  assertEquals(json, { key1: "value1", key2: "value2" });
+});
+
+test(function readJsonFileNotExistsSync(): void {
+  const emptyJsonFile = path.join(testdataDir, "json_not_exists.json");
+
+  assertThrows((): void => {
+    readJsonSync(emptyJsonFile);
+  });
+});
+
+test(function readEmptyJsonFileSync(): void {
+  const emptyJsonFile = path.join(testdataDir, "json_empty.json");
+
+  assertThrows((): void => {
+    readJsonSync(emptyJsonFile);
+  });
+});
+
+test(function readInvalidJsonFile(): void {
+  const invalidJsonFile = path.join(testdataDir, "json_invalid.json");
+
+  assertThrows((): void => {
+    readJsonSync(invalidJsonFile);
+  });
+});
+
+test(function readValidArrayJsonFileSync(): void {
+  const invalidJsonFile = path.join(testdataDir, "json_valid_array.json");
+
+  const json = readJsonSync(invalidJsonFile);
+
+  assertEquals(json, ["1", "2", "3"]);
+});
+
+test(function readValidObjJsonFileSync(): void {
+  const invalidJsonFile = path.join(testdataDir, "json_valid_obj.json");
+
+  const json = readJsonSync(invalidJsonFile);
+
+  assertEquals(json, { key1: "value1", key2: "value2" });
+});
+
+test(function readValidObjJsonFileSyncWithRelativePath(): void {
+  const json = readJsonSync("./fs/testdata/json_valid_obj.json");
+
+  assertEquals(json, { key1: "value1", key2: "value2" });
+});