diff --git a/__tests__/installer.test.ts b/__tests__/installer.test.ts
index a3e35ce..98f557d 100644
--- a/__tests__/installer.test.ts
+++ b/__tests__/installer.test.ts
@@ -116,11 +116,27 @@ describe('installer tests', () => {
 
   it('Resolving a normal generic version works', async() => {
     const dotnetInstaller = new installer.DotnetCoreInstaller('3.1.x');
-    let versInfo = await dotnetInstaller.resolveInfos(["win-x64"],new installer.DotNetVersionInfo("3.1.x"));
+    let versInfo = await dotnetInstaller.resolveInfos(["win-x64"],new installer.DotNetVersionInfo('3.1.x'));
 
     expect(versInfo.resolvedVersion.startsWith('3.1.'));
   }, 100000);
 
+  it('Resolving a nonexistent generic version fails', async() => {
+    const dotnetInstaller = new installer.DotnetCoreInstaller('999.1.x');
+    try{
+      await dotnetInstaller.resolveInfos(["win-x64"],new installer.DotNetVersionInfo('999.1.x'));
+      fail();
+    } catch {
+      expect(true);
+    }
+  }, 100000);
+
+  it('Resolving a exact version works', async() => {
+    const dotnetInstaller = new installer.DotnetCoreInstaller('3.1.201');
+    let versInfo = await dotnetInstaller.resolveInfos(["win-x64"],new installer.DotNetVersionInfo('3.1.201'));
+
+    expect(versInfo.resolvedVersion).toBe('3.1.201');
+  }, 100000);
 
   it('Acquires version of dotnet if no matching version is installed', async () => {
     await getDotnet('2.2.205');