Compute wrapper cache key

__tests__/cache.test.ts

@@ -0,0 +1,33 @@
+import * as cache from '../src/cache'
+import * as path from 'path'
+
+describe('cache', () => {
+    describe('can extract gradle wrapper slug', () => {
+        it('from wrapper properties file', async () => {
+            const version = cache.extractGradleWrapperSlugFrom(
+                path.resolve(
+                    '__tests__/data/basic/gradle/wrapper/gradle-wrapper.properties'
+                )
+            )
+            expect(version).toBe('6.5-bin')
+        })
+        it('for -bin dist', async () => {
+            const version = cache.extractGradleWrapperSlugFromDistUri(
+                'distributionUrl=https\\://services.gradle.org/distributions/gradle-6.5-bin.zip'
+            )
+            expect(version).toBe('6.5-bin')
+        })
+        it('for -all dist', async () => {
+            const version = cache.extractGradleWrapperSlugFromDistUri(
+                'distributionUrl=https\\://services.gradle.org/distributions/gradle-6.5-all.zip'
+            )
+            expect(version).toBe('6.5-all')
+        })
+        it('for milestone', async () => {
+            const version = cache.extractGradleWrapperSlugFromDistUri(
+                'distributionUrl=https\\://services.gradle.org/distributions/gradle-6.6-milestone-1-all.zip'
+            )
+            expect(version).toBe('6.6-milestone-1-all')
+        })
+    })
+})

__tests__/main.test.ts

@@ -1,3 +0,0 @@
-describe('TODO - Add a test suite', () => {
-    it('TODO - Add a test', async () => {})
-})