From aa81c16a3ef564a0b4aec0e5c349729d050642c1 Mon Sep 17 00:00:00 2001
From: "Lyu, Wei Da" <b00605009@ntu.edu.tw>
Date: Tue, 3 Oct 2023 08:47:11 +0800
Subject: [PATCH] switch to snapshot test

---
 .../features/FoldingRangeProvider.test.ts     | 104 ---------------
 .../features/folding-range/.gitignore         |   1 +
 .../fixtures/await-catch/expectedv2.json      |   4 +
 .../fixtures/await-catch/input.svelte         |   9 ++
 .../await-peding-catch/expectedv2.json        |   4 +
 .../fixtures/await-peding-catch/input.svelte  |  12 ++
 .../await-pending-only/expectedv2.json        |   1 +
 .../fixtures/await-pending-only/input.svelte  |   3 +
 .../await-pending-then-catch/expectedv2.json  |   8 ++
 .../await-pending-then-catch/input.svelte     |  17 +++
 .../await-pending-then/expectedv2.json        |   1 +
 .../fixtures/await-pending-then/input.svelte  |   5 +
 .../fixtures/await-then/expectedv2.json       |   4 +
 .../fixtures/await-then/input.svelte          |   9 ++
 .../fixtures/each-block/expectedv2.json       |   4 +
 .../fixtures/each-block/input.svelte          |   9 ++
 .../fixtures/if-block/expectedv2.json         |   8 ++
 .../fixtures/if-block/input.svelte            |  17 +++
 .../fixtures/parser-error/expectedv2.json     |   5 +
 .../fixtures/parser-error/input.svelte}       |   2 +-
 .../fixtures/script/expectedv2.json           |   4 +
 .../fixtures/script/input.svelte}             |   8 +-
 .../features/folding-range/index.test.ts      | 122 ++++++++++++++++++
 23 files changed, 249 insertions(+), 112 deletions(-)
 delete mode 100644 packages/language-server/test/plugins/typescript/features/FoldingRangeProvider.test.ts
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/.gitignore
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-catch/expectedv2.json
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-catch/input.svelte
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-peding-catch/expectedv2.json
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-peding-catch/input.svelte
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-only/expectedv2.json
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-only/input.svelte
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then-catch/expectedv2.json
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then-catch/input.svelte
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then/expectedv2.json
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then/input.svelte
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-then/expectedv2.json
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-then/input.svelte
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/each-block/expectedv2.json
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/each-block/input.svelte
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/if-block/expectedv2.json
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/if-block/input.svelte
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/parser-error/expectedv2.json
 rename packages/language-server/test/plugins/typescript/{testfiles/folding-range/folding-parser-error.svelte => features/folding-range/fixtures/parser-error/input.svelte} (94%)
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/fixtures/script/expectedv2.json
 rename packages/language-server/test/plugins/typescript/{testfiles/folding-range/folding.svelte => features/folding-range/fixtures/script/input.svelte} (59%)
 create mode 100644 packages/language-server/test/plugins/typescript/features/folding-range/index.test.ts

diff --git a/packages/language-server/test/plugins/typescript/features/FoldingRangeProvider.test.ts b/packages/language-server/test/plugins/typescript/features/FoldingRangeProvider.test.ts
deleted file mode 100644
index f8284e90c..000000000
--- a/packages/language-server/test/plugins/typescript/features/FoldingRangeProvider.test.ts
+++ /dev/null
@@ -1,104 +0,0 @@
-import * as assert from 'assert';
-import * as path from 'path';
-import ts from 'typescript';
-import { FoldingRange, FoldingRangeKind } from 'vscode-languageserver';
-import { Document, DocumentManager } from '../../../../src/lib/documents';
-import { LSConfigManager } from '../../../../src/ls-config';
-import { FoldingRangeProviderImpl } from '../../../../src/plugins/typescript/features/FoldingRangeProvider';
-import { LSAndTSDocResolver } from '../../../../src/plugins/typescript/LSAndTSDocResolver';
-import { __resetCache } from '../../../../src/plugins/typescript/service';
-import { pathToUrl } from '../../../../src/utils';
-import { serviceWarmup } from '../test-utils';
-
-const testDir = path.join(__dirname, '..');
-const foldingTestDir = path.join(testDir, 'testfiles', 'folding-range');
-
-describe('FoldingRangeProvider', function () {
-    serviceWarmup(this, foldingTestDir, pathToUrl(testDir));
-
-    function setup(filename: string) {
-        const docManager = new DocumentManager(
-            (textDocument) => new Document(textDocument.uri, textDocument.text)
-        );
-        const lsConfigManager = new LSConfigManager();
-
-        lsConfigManager.updateClientCapabilities({
-            textDocument: { foldingRange: { lineFoldingOnly: true } }
-        });
-        const lsAndTsDocResolver = new LSAndTSDocResolver(docManager, [testDir], lsConfigManager);
-        const provider = new FoldingRangeProviderImpl(lsAndTsDocResolver, lsConfigManager);
-        const filePath = path.join(foldingTestDir, filename);
-        const document = docManager.openClientDocument(<any>{
-            uri: pathToUrl(filePath),
-            text: ts.sys.readFile(filePath) || ''
-        });
-        return { provider, document };
-    }
-
-    it('provides folding', async () => {
-        const { provider, document } = setup('folding.svelte');
-
-        const foldingRanges = await provider.getFoldingRanges(document);
-
-        assert.deepStrictEqual(foldingRanges, <FoldingRange[]>[
-            {
-                startLine: 1,
-                endLine: 2,
-                startCharacter: undefined,
-                kind: FoldingRangeKind.Imports,
-                endCharacter: undefined
-            },
-            {
-                startLine: 4,
-                endLine: 5,
-                startCharacter: undefined,
-                kind: undefined,
-                endCharacter: undefined
-            },
-            {
-                startLine: 9,
-                endLine: 10,
-                startCharacter: undefined,
-                kind: undefined,
-                endCharacter: undefined
-            },
-            {
-                startLine: 11,
-                endLine: 12,
-                startCharacter: undefined,
-                kind: undefined,
-                endCharacter: undefined
-            }
-        ]);
-    });
-
-    it('provides folding during parser error', async () => {
-        const { provider, document } = setup('folding-parser-error.svelte');
-
-        const foldingRanges = await provider.getFoldingRanges(document);
-
-        assert.deepStrictEqual(foldingRanges, <FoldingRange[]>[
-            {
-                startLine: 1,
-                endLine: 2,
-                startCharacter: undefined,
-                kind: undefined,
-                endCharacter: undefined
-            },
-            {
-                startLine: 6,
-                endLine: 7,
-                startCharacter: undefined,
-                kind: undefined,
-                endCharacter: undefined
-            },
-            {
-                startLine: 8,
-                endLine: 9,
-                startCharacter: undefined,
-                kind: undefined,
-                endCharacter: undefined
-            }
-        ]);
-    });
-});
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/.gitignore b/packages/language-server/test/plugins/typescript/features/folding-range/.gitignore
new file mode 100644
index 000000000..c3bc17626
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/.gitignore
@@ -0,0 +1 @@
+debug.svelte
\ No newline at end of file
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-catch/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-catch/expectedv2.json
new file mode 100644
index 000000000..98bf02d30
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-catch/expectedv2.json
@@ -0,0 +1,4 @@
+[
+    { "startLine": 0, "endLine": 1 },
+    { "startLine": 4, "endLine": 7 }
+]
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-catch/input.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-catch/input.svelte
new file mode 100644
index 000000000..e9e6d5619
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-catch/input.svelte
@@ -0,0 +1,9 @@
+{#await somePromise catch error}
+    <h1>Promise Pending</h1>
+{/await}
+
+{#await somePromise 
+
+catch error}
+    <h1>Promise Pending</h1>
+{/await}
\ No newline at end of file
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-peding-catch/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-peding-catch/expectedv2.json
new file mode 100644
index 000000000..ff07652a2
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-peding-catch/expectedv2.json
@@ -0,0 +1,4 @@
+[
+    { "startLine": 0, "endLine": 1 },
+    { "startLine": 6, "endLine": 7 }
+]
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-peding-catch/input.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-peding-catch/input.svelte
new file mode 100644
index 000000000..2345b706b
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-peding-catch/input.svelte
@@ -0,0 +1,12 @@
+{#await somePromise}
+    <h1>Promise Pending</h1>
+{:catch error}
+    <h1>Promise Errored {error}</h1>
+{/await}
+
+{#await somePromise}
+    <h1>Promise Pending</h1>
+{
+    :catch error}
+    <h1>Promise Errored {error}</h1>
+{/await}
\ No newline at end of file
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-only/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-only/expectedv2.json
new file mode 100644
index 000000000..fe51488c7
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-only/expectedv2.json
@@ -0,0 +1 @@
+[]
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-only/input.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-only/input.svelte
new file mode 100644
index 000000000..cc4ccd6f6
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-only/input.svelte
@@ -0,0 +1,3 @@
+{#await somePromise}
+    <h1>Loading</h1>
+{/await}
\ No newline at end of file
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then-catch/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then-catch/expectedv2.json
new file mode 100644
index 000000000..a621896be
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then-catch/expectedv2.json
@@ -0,0 +1,8 @@
+[
+    { "startLine": 2, "endLine": 3 },
+    { "startLine": 0, "endLine": 1 },
+    { "startLine": 4, "endLine": 5 },
+    { "startLine": 10, "endLine": 12 },
+    { "startLine": 8, "endLine": 9 },
+    { "startLine": 13, "endLine": 15 }
+]
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then-catch/input.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then-catch/input.svelte
new file mode 100644
index 000000000..af0e22c8e
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then-catch/input.svelte
@@ -0,0 +1,17 @@
+{#await somePromise}
+    <h1>Promise Pending</h1>
+{:then value}
+    <h1>Promise Resolved {value}</h1>
+{:catch error}
+    <h1>Promise Errored {error}</h1>
+{/await}
+
+{#await somePromise}
+    <h1>Promise Pending</h1>
+{
+    :then value}
+    <h1>Promise Resolved {value}</h1>
+{
+    :catch error}
+    <h1>Promise Errored {error}</h1>
+{/await}
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then/expectedv2.json
new file mode 100644
index 000000000..ee866a024
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then/expectedv2.json
@@ -0,0 +1 @@
+[{ "startLine": 0, "endLine": 1 }]
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then/input.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then/input.svelte
new file mode 100644
index 000000000..edd46fdb1
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-pending-then/input.svelte
@@ -0,0 +1,5 @@
+{#await somePromise}
+    <h1>Promise Pending</h1>
+{:catch error}
+    <h1>Promise Errored {error}</h1>
+{/await}
\ No newline at end of file
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-then/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-then/expectedv2.json
new file mode 100644
index 000000000..98bf02d30
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-then/expectedv2.json
@@ -0,0 +1,4 @@
+[
+    { "startLine": 0, "endLine": 1 },
+    { "startLine": 4, "endLine": 7 }
+]
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-then/input.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-then/input.svelte
new file mode 100644
index 000000000..9708ebccc
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/await-then/input.svelte
@@ -0,0 +1,9 @@
+{#await somePromise then value}
+    <h1>Promise Pending</h1>
+{/await}
+
+{#await somePromise 
+    
+    then value}
+    <h1>Promise Pending</h1>
+{/await}
\ No newline at end of file
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/each-block/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/each-block/expectedv2.json
new file mode 100644
index 000000000..d94ee7104
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/each-block/expectedv2.json
@@ -0,0 +1,4 @@
+[
+    { "startLine": 0, "endLine": 1 },
+    { "startLine": 4, "endLine": 5 }
+]
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/each-block/input.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/each-block/input.svelte
new file mode 100644
index 000000000..5324264c2
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/each-block/input.svelte
@@ -0,0 +1,9 @@
+{#each items as item}
+    {item}
+{/each}
+
+{#each items as item}
+    {item}
+{:else}
+    no items
+{/each}
\ No newline at end of file
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/if-block/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/if-block/expectedv2.json
new file mode 100644
index 000000000..1a70a9ed7
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/if-block/expectedv2.json
@@ -0,0 +1,8 @@
+[
+    { "startLine": 0, "endLine": 1 },
+    { "startLine": 2, "endLine": 3 },
+    { "startLine": 4, "endLine": 5 },
+    { "startLine": 8, "endLine": 9 },
+    { "startLine": 12, "endLine": 13 },
+    { "startLine": 14, "endLine": 15 }
+]
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/if-block/input.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/if-block/input.svelte
new file mode 100644
index 000000000..0444a9773
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/if-block/input.svelte
@@ -0,0 +1,17 @@
+{#if name1 == "world"}
+    <h1>Hello {name2}</h1>
+{:else if name3 == "person"}
+    <h2>hello {name4}</h2>
+{:else}
+    <h3>hey {name5}</h3>
+{/if}
+
+{#if kenobi}
+    <h2>Hello There</h2>
+{/if}
+
+{#if name1 = 'hi'}
+    <h2>hi</h2>
+{:else}
+    <h3>hello</h3>
+{/if}
\ No newline at end of file
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/parser-error/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/parser-error/expectedv2.json
new file mode 100644
index 000000000..4b0d4a657
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/parser-error/expectedv2.json
@@ -0,0 +1,5 @@
+[
+    { "startLine": 1, "endLine": 2 },
+    { "startLine": 6, "endLine": 7 },
+    { "startLine": 8, "endLine": 9 }
+]
diff --git a/packages/language-server/test/plugins/typescript/testfiles/folding-range/folding-parser-error.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/parser-error/input.svelte
similarity index 94%
rename from packages/language-server/test/plugins/typescript/testfiles/folding-range/folding-parser-error.svelte
rename to packages/language-server/test/plugins/typescript/features/folding-range/fixtures/parser-error/input.svelte
index 93393525d..e2c5abde5 100644
--- a/packages/language-server/test/plugins/typescript/testfiles/folding-range/folding-parser-error.svelte
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/parser-error/input.svelte
@@ -8,4 +8,4 @@
     <div></div>
 {:else}
     <div></div>
-{/if}
+{/if
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/script/expectedv2.json b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/script/expectedv2.json
new file mode 100644
index 000000000..395632733
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/script/expectedv2.json
@@ -0,0 +1,4 @@
+[
+    { "startLine": 1, "endLine": 2, "kind": "imports" },
+    { "startLine": 4, "endLine": 5 }
+]
diff --git a/packages/language-server/test/plugins/typescript/testfiles/folding-range/folding.svelte b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/script/input.svelte
similarity index 59%
rename from packages/language-server/test/plugins/typescript/testfiles/folding-range/folding.svelte
rename to packages/language-server/test/plugins/typescript/features/folding-range/fixtures/script/input.svelte
index 153d8ee30..3046b7cd6 100644
--- a/packages/language-server/test/plugins/typescript/testfiles/folding-range/folding.svelte
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/fixtures/script/input.svelte
@@ -5,10 +5,4 @@
     function hi() {
 
     }
-</script>
-
-{#if 'hi'}
-        <div></div>
-    {:else}
-        <div></div>
-{/if}
+</script>
\ No newline at end of file
diff --git a/packages/language-server/test/plugins/typescript/features/folding-range/index.test.ts b/packages/language-server/test/plugins/typescript/features/folding-range/index.test.ts
new file mode 100644
index 000000000..aefd82e11
--- /dev/null
+++ b/packages/language-server/test/plugins/typescript/features/folding-range/index.test.ts
@@ -0,0 +1,122 @@
+import * as assert from 'assert';
+import { readFileSync, writeFileSync } from 'fs';
+import { join } from 'path';
+import ts from 'typescript';
+import { Document, DocumentManager } from '../../../../../src/lib/documents';
+import { LSConfigManager } from '../../../../../src/ls-config';
+import { LSAndTSDocResolver } from '../../../../../src/plugins';
+import { FoldingRangeProviderImpl } from '../../../../../src/plugins/typescript/features/FoldingRangeProvider';
+import { pathToUrl } from '../../../../../src/utils';
+import {
+    createJsonSnapshotFormatter,
+    createSnapshotTester,
+    updateSnapshotIfFailedOrEmpty
+} from '../../test-utils';
+
+function setup(workspaceDir: string, filePath: string) {
+    const docManager = new DocumentManager(
+        (textDocument) => new Document(textDocument.uri, textDocument.text)
+    );
+    const configManager = new LSConfigManager();
+    configManager.updateClientCapabilities({
+        textDocument: { foldingRange: { lineFoldingOnly: true } }
+    });
+    const lsAndTsDocResolver = new LSAndTSDocResolver(
+        docManager,
+        [pathToUrl(workspaceDir)],
+        configManager
+    );
+    const plugin = new FoldingRangeProviderImpl(lsAndTsDocResolver, configManager);
+    const document = docManager.openClientDocument(<any>{
+        uri: pathToUrl(filePath),
+        text: ts.sys.readFile(filePath) || ''
+    });
+    return { plugin, document, docManager, lsAndTsDocResolver };
+}
+
+async function executeTest(
+    inputFile: string,
+    {
+        workspaceDir,
+        dir
+    }: {
+        workspaceDir: string;
+        dir: string;
+    }
+) {
+    const expected = 'expectedv2.json';
+    const { plugin, document } = setup(workspaceDir, inputFile);
+    const folding = await plugin.getFoldingRanges(document);
+
+    const expectedFile = join(dir, expected);
+    if (process.argv.includes('--debug')) {
+        writeFileSync(join(dir, 'debug.svelte'), appendFoldingAsComment());
+    }
+
+    const snapshotFormatter = await createJsonSnapshotFormatter(dir);
+
+    await updateSnapshotIfFailedOrEmpty({
+        assertion() {
+            assert.deepStrictEqual(
+                JSON.parse(JSON.stringify(folding)),
+                JSON.parse(readFileSync(expectedFile, 'utf-8'))
+            );
+        },
+        expectedFile,
+        getFileContent() {
+            return snapshotFormatter(folding);
+        },
+        rootDir: __dirname
+    });
+
+    function appendFoldingAsComment() {
+        if (!folding) {
+            return document.getText();
+        }
+
+        const offsetMap = new Map<number, string[]>();
+        const lineLength = document
+            .getText()
+            .split('\n')
+            .map((line) => (line[line.length - 1] === '\r' ? line.length - 1 : line.length));
+
+        for (const fold of folding) {
+            const startOffset = document.offsetAt({
+                line: fold.startLine,
+                character: lineLength[fold.startLine]
+            });
+            const endOffset = document.offsetAt({
+                line: fold.endLine,
+                character: lineLength[fold.endLine]
+            });
+
+            offsetMap.set(startOffset, (offsetMap.get(startOffset) ?? []).concat(`/*s*/`));
+            offsetMap.set(endOffset, (offsetMap.get(endOffset) ?? []).concat(`/*e*/`));
+        }
+
+        const offsets = Array.from(offsetMap.keys()).sort((a, b) => a - b);
+        const parts: string[] = [];
+
+        for (let index = 0; index < offsets.length; index++) {
+            const offset = offsets[index];
+            parts.push(
+                document.getText().slice(offsets[index - 1], offset),
+                ...(offsetMap.get(offset) ?? [])
+            );
+        }
+
+        parts.push(document.getText().slice(offsets[offsets.length - 1]));
+
+        return parts.join('');
+    }
+}
+
+const executeTests = createSnapshotTester(executeTest);
+
+describe.only('FoldingRangeProvider', function () {
+    executeTests({
+        dir: join(__dirname, 'fixtures'),
+        workspaceDir: join(__dirname, 'fixtures'),
+        context: this
+    });
+});