Fixing panic in go's ReadOpenEnvironment (#56)

sdk/go/api_esc_extensions.go

@@ -101,6 +101,10 @@ func (c *EscClient) ReadOpenEnvironment(ctx context.Context, org, projectName, e
 		return nil, nil, err
 	}
 
+	if env == nil || env.Properties == nil {
+		return nil, nil, nil
+	}
+
 	propertyMap := *env.Properties
 	for k, v := range propertyMap {
 		v.Value = mapValues(v.Value)

sdk/python/test/test_esc_api.py

@@ -44,6 +44,9 @@ def test_environment_end_to_end(self) -> None:
         envs = self.client.list_environments(self.orgName)
         self.assertFindEnv(envs)
 
+        _, _, yaml = self.client.open_and_read_environment(self.orgName, PROJECT_NAME, self.envName)
+        self.assertEqual(yaml, "{}\n")
+
         fooReference = "${foo}"
         yaml = f"""
 imports:

sdk/typescript/test/client.spec.ts

@@ -53,6 +53,10 @@ describe("ESC", async () => {
         assert.notEqual(orgs, undefined);
         assert(orgs?.environments?.some((e) => e.name === name));
 
+        let openEmptyEnv = await client.openAndReadEnvironment(PULUMI_ORG, PROJECT_NAME, name);
+        assert.deepEqual(openEmptyEnv?.environment, {})
+        assert.deepEqual(openEmptyEnv?.values, {})
+
         const envDef: esc.EnvironmentDefinition = {
             imports: [fullyQualifiedName(baseEnvName)],
             values: {