fix: json schema (#40)

README.md

@@ -36,7 +36,7 @@ Share this app with one of the following badges.
 
 ### Configuration
 
-The level of rules can be modified using `.github/in-solidarity.yml`. Chec the[sample configuration](https://github.com/jpoehnelt/in-solidarity-bot/blob/main/fixtures/in-solidarity.yml).
+The level of rules can be modified using `.github/in-solidarity.yml`. Check the [sample configuration](https://github.com/jpoehnelt/in-solidarity-bot/blob/main/fixtures/in-solidarity.yml).
 
 ```yaml
 rules:

src/config.test.ts

@@ -21,7 +21,7 @@ import fs from "fs";
 import yaml from "js-yaml";
 
 const fakeContext = ({
-  config: () =>
+  config: async () =>
     yaml.safeLoad(fs.readFileSync("./fixtures/in-solidarity.yml", "utf8")),
 } as unknown) as Context;
 
@@ -35,7 +35,7 @@ test("should override default rules", async () => {
 
 test("should throw for invalid config", async () => {
   const context = ({
-    config: () => {
+    config: async () => {
       return {
         rules: {
           master: {
@@ -48,9 +48,22 @@ test("should throw for invalid config", async () => {
   await expect(getConfig(context)).rejects.toBeInstanceOf(InvalidConfigError);
 });
 
-test("should handle case wehre no repo config", async () => {
+test("should throw for invalid config having level at top", async () => {
   const context = ({
-    config: () => {
+    config: async () => {
+      return {
+        rules: {
+          master: "failure",
+        },
+      };
+    },
+  } as unknown) as Context;
+  await expect(getConfig(context)).rejects.toBeInstanceOf(InvalidConfigError);
+});
+
+test("should handle case where no repo config", async () => {
+  const context = ({
+    config: async () => {
       return;
     },
   } as unknown) as Context;

src/config.ts

@@ -36,6 +36,7 @@ const ajv = new Ajv({ allErrors: true });
 
 const rulesPropertiesSchema = Object.keys(DEFAULT_RULES).reduce((obj, k) => {
   obj[k] = {
+    type: "object",
     additionalProperties: false,
     properties: {
       level: { type: "string", enum: Object.values(Level) },
@@ -45,9 +46,11 @@ const rulesPropertiesSchema = Object.keys(DEFAULT_RULES).reduce((obj, k) => {
 }, {});
 
 const schema = {
+  type: "object",
   additionalProperties: false,
   properties: {
     rules: {
+      type: "object",
       additionalProperties: false,
       properties: rulesPropertiesSchema,
     },
@@ -58,7 +61,6 @@ export const getConfig = async (context: Context): Promise<Configuration> => {
   const validate = ajv.compile(schema);
 
   const repoConfig = await context.config(CONFIG_FILE);
-
   if (repoConfig) {
     if (!validate(repoConfig)) {
       throw new InvalidConfigError(