feat: display tree diff on --long

Author: wraithgar

lib/utils/reify-output.js

@@ -43,7 +43,7 @@ const reifyOutput = (npm, arb) => {
 
   if (diff) {
     let diffTable
-    if (npm.config.get('dry-run')) {
+    if (npm.config.get('dry-run') || npm.config.get('long')) {
       diffTable = new Table({
         chars: {
           top: '',

tap-snapshots/test/lib/utils/reify-output.js.test.cjs

@@ -1633,7 +1633,16 @@ exports[`test/lib/utils/reify-output.js TAP packages changed message  > {"added"
 }
 `
 
-exports[`test/lib/utils/reify-output.js TAP prints dedupe difference > diff table 1`] = `
+exports[`test/lib/utils/reify-output.js TAP prints dedupe difference on dry-run > diff table 1`] = `
+
+change  bar  1.0.0 -> 2.1.0
+remove  bar  1.0.0         
+add     foo  1.0.0         
+
+removed 1 package, and changed 1 package in {TIME}
+`
+
+exports[`test/lib/utils/reify-output.js TAP prints dedupe difference on long > diff table 1`] = `
 
 change  bar  1.0.0 -> 2.1.0
 remove  bar  1.0.0         

test/lib/utils/reify-output.js

@@ -381,7 +381,7 @@ t.test('added packages should be looked up within returned tree', async t => {
   })
 })
 
-t.test('prints dedupe difference', async t => {
+t.test('prints dedupe difference on dry-run', async t => {
   const mock = {
     actualTree: {
       name: 'foo',
@@ -408,3 +408,31 @@ t.test('prints dedupe difference', async t => {
 
   t.matchSnapshot(out, 'diff table')
 })
+
+t.test('prints dedupe difference on long', async t => {
+  const mock = {
+    actualTree: {
+      name: 'foo',
+      inventory: {
+        has: () => false,
+      },
+    },
+    diff: {
+      children: [
+        { action: 'ADD', ideal: { name: 'foo', package: { version: '1.0.0' } } },
+        { action: 'REMOVE', actual: { name: 'bar', package: { version: '1.0.0' } } },
+        {
+          action: 'CHANGE',
+          actual: { name: 'bar', package: { version: '1.0.0' } },
+          ideal: { package: { version: '2.1.0' } },
+        },
+      ],
+    },
+  }
+
+  const out = await mockReify(t, mock, {
+    long: true,
+  })
+
+  t.matchSnapshot(out, 'diff table')
+})