1 files changed, 156 insertions, 0 deletions
diff --git a/std/prettier/main_test.ts b/std/prettier/main_test.ts
index 16c19ed03..a63890741 100644
--- a/std/prettier/main_test.ts
+++ b/std/prettier/main_test.ts
@@ -378,4 +378,160 @@ test(async function testPrettierReadFromStdin(): Promise<void> {
   }
 });
 
+test(async function testPrettierWithAutoConfig(): Promise<void> {
+  const configs = [
+    "config_file_json",
+    "config_file_toml",
+    "config_file_js",
+    "config_file_ts"
+  ];
+
+  for (const configName of configs) {
+    const cwd = join(testdata, configName);
+    const prettierFile = join(Deno.cwd(), "prettier", "main.ts");
+    const { stdout, stderr } = Deno.run({
+      args: [
+        execPath(),
+        "run",
+        "--allow-read",
+        "--allow-env",
+        prettierFile,
+        "../5.ts",
+        "--config",
+        "auto"
+      ],
+      stdout: "piped",
+      stderr: "piped",
+      cwd
+    });
+
+    const output = decoder.decode(await Deno.readAll(stdout));
+    const errMsg = decoder.decode(await Deno.readAll(stderr));
+
+    assertEquals(
+      errMsg
+        .split(EOL)
+        .filter((line: string) => line.indexOf("Compile") !== 0)
+        .join(EOL),
+      ""
+    );
+
+    assertEquals(output, `console.log('0');\n`);
+  }
+});
+
+test(async function testPrettierWithSpecifiedConfig(): Promise<void> {
+  interface Config {
+    dir: string;
+    name: string;
+  }
+  const configs: Config[] = [
+    {
+      dir: "config_file_json",
+      name: ".prettierrc.json"
+    },
+    {
+      dir: "config_file_toml",
+      name: ".prettierrc.toml"
+    },
+    {
+      dir: "config_file_js",
+      name: ".prettierrc.js"
+    },
+    {
+      dir: "config_file_ts",
+      name: ".prettierrc.ts"
+    }
+  ];
+
+  for (const config of configs) {
+    const cwd = join(testdata, config.dir);
+    const prettierFile = join(Deno.cwd(), "prettier", "main.ts");
+    const { stdout, stderr } = Deno.run({
+      args: [
+        execPath(),
+        "run",
+        "--allow-read",
+        "--allow-env",
+        prettierFile,
+        "../5.ts",
+        "--config",
+        config.name
+      ],
+      stdout: "piped",
+      stderr: "piped",
+      cwd
+    });
+
+    const output = decoder.decode(await Deno.readAll(stdout));
+    const errMsg = decoder.decode(await Deno.readAll(stderr));
+
+    assertEquals(
+      errMsg
+        .split(EOL)
+        .filter((line: string) => line.indexOf("Compile") !== 0)
+        .join(EOL),
+      ""
+    );
+
+    assertEquals(output, `console.log('0');\n`);
+  }
+});
+
+test(async function testPrettierWithAutoIgnore(): Promise<void> {
+  // only format typescript file
+  const cwd = join(testdata, "ignore_file");
+  const prettierFile = join(Deno.cwd(), "prettier", "main.ts");
+  const { stdout, stderr } = Deno.run({
+    args: [
+      execPath(),
+      "run",
+      "--allow-read",
+      "--allow-env",
+      prettierFile,
+      "**/*",
+      "--ignore-path",
+      "auto"
+    ],
+    stdout: "piped",
+    stderr: "piped",
+    cwd
+  });
+
+  assertEquals(decoder.decode(await Deno.readAll(stderr)), "");
+
+  assertEquals(
+    decoder.decode(await Deno.readAll(stdout)),
+    `console.log("typescript");\nconsole.log("typescript1");\n`
+  );
+});
+
+test(async function testPrettierWithSpecifiedIgnore(): Promise<void> {
+  // only format javascript file
+  const cwd = join(testdata, "ignore_file");
+  const prettierFile = join(Deno.cwd(), "prettier", "main.ts");
+  const { stdout, stderr } = Deno.run({
+    args: [
+      execPath(),
+      "run",
+      "--allow-read",
+      "--allow-env",
+      prettierFile,
+      "**/*",
+      "--ignore-path",
+      "typescript.prettierignore"
+    ],
+    stdout: "piped",
+    stderr: "piped",
+    cwd
+  });
+
+  assertEquals(decoder.decode(await Deno.readAll(stderr)), "");
+
+  assertEquals(
+    decoder.decode(await Deno.readAll(stdout)),
+    `console.log("javascript");\nconsole.log("javascript1");\n`
+  );
+});
+
 runIfMain(import.meta);