test: Add unit testing

__tests__/get-latest-version.test.ts

@@ -31,7 +31,11 @@ describe('getLatestVersion()', () => {
       .get(`/api/formula/${Tool.Repo}.json`)
       .reply(200, jsonTestBrew);
 
-    const versionLatest: string = await getLatestVersion(Tool.Org, Tool.Repo, 'brew');
+    const versionLatest: string = await getLatestVersion(
+      Tool.Org,
+      Tool.Repo,
+      'brew'
+    );
     expect(versionLatest).toMatch(Tool.TestVersionLatest);
   });
 
@@ -40,7 +44,11 @@ describe('getLatestVersion()', () => {
       .get(`/repos/${Tool.Org}/${Tool.Repo}/releases/latest`)
       .reply(200, jsonTestGithub);
 
-    const versionLatest: string = await getLatestVersion(Tool.Org, Tool.Repo, 'github');
+    const versionLatest: string = await getLatestVersion(
+      Tool.Org,
+      Tool.Repo,
+      'github'
+    );
     expect(versionLatest).toMatch(Tool.TestVersionLatest);
   });
 
@@ -49,11 +57,9 @@ describe('getLatestVersion()', () => {
       .get(`/api/formula/${Tool.Repo}.json`)
       .reply(404);
 
-    try {
-      const versionLatest: string = await getLatestVersion(Tool.Org, Tool.Repo, 'brew');
-      console.debug(versionLatest);
-    } catch (e) {
-      expect(e).toThrow(FetchError);
-    }
+    // const versionLatest = await getLatestVersion(Tool.Org, Tool.Repo, 'brew');
+    await expect(
+      getLatestVersion(Tool.Org, Tool.Repo, 'brew')
+    ).rejects.toThrowError(FetchError);
   });
 });

src/get-latest-version.ts

@@ -17,7 +17,6 @@ export async function getLatestVersion(
   repo: string,
   api: string
 ): Promise<string> {
-  try {
   const url = getURL(org, repo, api);
   const response = await fetch(url);
   const json = await response.json();
@@ -28,7 +27,4 @@ export async function getLatestVersion(
     latestVersion = json.tag_name;
   }
   return latestVersion;
-  } catch (e) {
-    return e;
-  }
 }