Add tests

2 files changed, 96 insertions, 2 deletions

diff --git a/test/cli/run/bunfig.test.ts b/test/cli/run/bunfig.test.ts
new file mode 100644
index 000000000..2c0a0d1fb
--- /dev/null
+++ b/test/cli/run/bunfig.test.ts
@@ -0,0 +1,88 @@
+import { describe, expect, test } from "bun:test";
+import { bunRun, tempDirWithFiles } from "harness";
+
+describe("config", () => {
+  test("read bun.json", () => {
+    {
+      const dir = tempDirWithFiles("dotenv", {
+        "bun.json": `{"define": { "caterpillar": "'butterfly'" }}`,
+        "index.ts": "console.log(caterpillar);",
+      });
+      const { stdout } = bunRun(`${dir}/index.ts`);
+      // should be "a\n but console.log adds a newline
+      expect(stdout).toBe("butterfly");
+    }
+  });
+
+  test("read bunfig.toml", () => {
+    {
+      const dir = tempDirWithFiles("dotenv", {
+        "bunfig.toml": `[define]\n"caterpillar" = "'butterfly'"`,
+        "index.ts": "console.log(caterpillar);",
+      });
+      const { stdout } = bunRun(`${dir}/index.ts`);
+      // should be "a\n but console.log adds a newline
+      expect(stdout).toBe("butterfly");
+    }
+  });
+
+  test("ignore bunfig.toml if bun.json is found", () => {
+    {
+      const dir = tempDirWithFiles("dotenv", {
+        "bun.json": `{"define": { "caterpillar": "'correct'" }}`,
+        "bunfig.toml": `[define]\n"caterpillar" = "'wrong'"`,
+        "index.ts": "console.log(caterpillar);",
+      });
+      const { stdout } = bunRun(`${dir}/index.ts`);
+      // should be "a\n but console.log adds a newline
+      expect(stdout).toBe("correct");
+    }
+  });
+
+  test("read --config *.json", () => {
+    {
+      const dir = tempDirWithFiles("dotenv", {
+        "bun2.json": `{"define": { "caterpillar": "'butterfly'" }}`,
+        "index.ts": "console.log(caterpillar);",
+      });
+      const { stdout } = bunRun(`${dir}/index.ts`, {}, { flags: ["--config", "bun2.json"] });
+      // should be "a\n but console.log adds a newline
+      expect(stdout).toBe("butterfly");
+    }
+  });
+
+  test("read -c *.json", () => {
+    {
+      const dir = tempDirWithFiles("dotenv", {
+        "bun2.json": `{"define": { "caterpillar": "'butterfly'" }}`,
+        "index.ts": "console.log(caterpillar);",
+      });
+      const { stdout } = bunRun(`${dir}/index.ts`, {}, { flags: ["-c", "bun2.json"] });
+      // should be "a\n but console.log adds a newline
+      expect(stdout).toBe("butterfly");
+    }
+  });
+
+  test("read --config *.toml", () => {
+    {
+      const dir = tempDirWithFiles("dotenv", {
+        "bun2.toml": `[define]\n"caterpillar" = "'butterfly'"`,
+        "index.ts": "console.log(caterpillar);",
+      });
+      const { stdout } = bunRun(`${dir}/index.ts`, {}, { flags: ["--config", "bun2.toml"] });
+      // should be "a\n but console.log adds a newline
+      expect(stdout).toBe("butterfly");
+    }
+  });
+  test("read -c *.toml", () => {
+    {
+      const dir = tempDirWithFiles("dotenv", {
+        "bun2.toml": `[define]\n"caterpillar" = "'butterfly'"`,
+        "index.ts": "console.log(caterpillar);",
+      });
+      const { stdout } = bunRun(`${dir}/index.ts`, {}, { flags: ["-c", "bun2.toml"] });
+      // should be "a\n but console.log adds a newline
+      expect(stdout).toBe("butterfly");
+    }
+  });
+});
diff --git a/test/harness.ts b/test/harness.ts
index 2da12e094..9643aff3d 100644
--- a/test/harness.ts
+++ b/test/harness.ts
@@ -101,9 +101,15 @@ export function tempDirWithFiles(basename: string, files: Record<string, string
   return dir;
 }
 
-export function bunRun(file: string, env?: Record<string, string>) {
+export function bunRun(
+  file: string,
+  env?: Record<string, string>,
+  params?: {
+    flags?: string[];
+  },
+) {
   var path = require("path");
-  const result = Bun.spawnSync([bunExe(), file], {
+  const result = Bun.spawnSync([bunExe(), ...(params?.flags ?? []), file], {
     cwd: path.dirname(file),
     env: {
       ...bunEnv,