test(unused): Add failing test.

fixtures/no-unused-declaration/unused-types/fixture.ts.fix

@@ -0,0 +1,2 @@
+class Person {}
+

fixtures/no-unused-declaration/unused-types/fixture.ts.lint

@@ -0,0 +1,6 @@
+interface SomeInterface {}
+          ~~~~~~~~~~~~~     [no-unused-declaration]
+type SomeType = {};
+     ~~~~~~~~               [no-unused-declaration]
+
+[no-unused-declaration]: Unused declarations are forbidden

fixtures/no-unused-declaration/unused-types/tsconfig.json

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "module": "commonjs"
+  }
+}

fixtures/no-unused-declaration/unused-types/tslint.json

@@ -0,0 +1,8 @@
+{
+  "defaultSeverity": "error",
+  "jsRules": {},
+  "rules": {
+    "no-unused-declaration": { "severity": "error" }
+  },
+  "rulesDirectory": "../../../build/rules"
+}

fixtures/no-unused-declaration/used-types/fixture.ts.lint

@@ -0,0 +1,7 @@
+interface SomeInterface {}
+type SomeType = {};
+
+declare const a: SomeInterface;
+declare const b: SomeType;
+
+console.log(a, b);

fixtures/no-unused-declaration/used-types/tsconfig.json

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "module": "commonjs"
+  }
+}

fixtures/no-unused-declaration/used-types/tslint.json

@@ -0,0 +1,8 @@
+{
+  "defaultSeverity": "error",
+  "jsRules": {},
+  "rules": {
+    "no-unused-declaration": { "severity": "error" }
+  },
+  "rulesDirectory": "../../../build/rules"
+}

package.json

@@ -47,7 +47,7 @@
     "test": "yarn run lint && yarn run test:build && yarn run test:tslint",
     "test:build": "yarn run test:clean && tsc -p tsconfig.json",
     "test:clean": "rimraf build",
-    "test:debug": "tslint --test fixtures/no-const-enum/local/tslint.json",
+    "test:debug": "tslint --test fixtures/no-unused-declaration/**/tslint.json",
     "test:tslint": "tslint --test fixtures/**/tslint.json"
   },
   "version": "1.5.0"