Make debugging work

pzich · Dec 29, 2017 · d0ef4ed · d0ef4ed
1 parent 1637393
commit d0ef4ed
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Showing 2 changed files with 49 additions and 2 deletions.
diff --git a/.vscode/launch.json b/.vscode/launch.json
@@ -0,0 +1,21 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            // Note; this config requires node 8.4 or higher
+            "type": "node",
+            "protocol": "inspector",
+            "request": "launch",
+            "name": "debug unit test",
+            "stopOnEntry": false,
+            "program": "${workspaceRoot}/node_modules/jest-cli/bin/jest.js",
+            "args": ["-i", "${file}"],
+            "runtimeArgs": [
+                "--nolazy"
+            ]
+        }
+    ]
+}
diff --git a/__tests__/base.js b/__tests__/base.js
@@ -1,5 +1,31 @@
 import immer from ".."
 
-test("base", () => {
-    expect(true).toBe(true)
+describe("base", () => {
+    let baseState
+
+    beforeEach(() => {
+        baseState = createBaseState()
+    })
+
+    it("should return the original without modifications", () => {
+        const nextState = immer(baseState, () => {})
+        expect(nextState).toBe(baseState)
+    })
+
+    afterEach(() => {
+        expect(baseState).toEqual(createBaseState())
+    })
 })
+
+function createBaseState() {
+    return {
+        anArray: [1, 2, { c: 3 }],
+        aProp: "hi",
+        anObject: {
+            nested: {
+                yummie: true
+            },
+            coffee: false
+        }
+    }
+}