From 5105214a1f777e1edc85f2fe013851319a284ddb Mon Sep 17 00:00:00 2001
From: Atreya Bain <atreyabain@gmail.com>
Date: Wed, 6 Aug 2025 16:37:10 +0100
Subject: [PATCH] [add] tests for instantiation

---
 test/instantiation.spec.js | 205 +++++++++++++++++++++++++++++++++++++
 1 file changed, 205 insertions(+)
 create mode 100644 test/instantiation.spec.js

diff --git a/test/instantiation.spec.js b/test/instantiation.spec.js
new file mode 100644
index 0000000..7c96da3
--- /dev/null
+++ b/test/instantiation.spec.js
@@ -0,0 +1,205 @@
+import {assert} from 'chai'
+import tsm from 'ts-morph';
+import {} from '../src/tsCalls.mjs'
+import { LibraryTypesRecorder } from '../src/libcalls.mjs'
+
+describe('Instantiation tests',function () {
+    /**
+     * @type {tsm.Project}
+    */
+   let project
+   /**
+    * @type {LibraryTypesRecorder}
+    */
+    let recorder;
+    before(function () {
+        project  = new tsm.Project({ compilerOptions: { checkJs: true,allowJs: true } });
+        recorder = new LibraryTypesRecorder(project.getTypeChecker());
+    });
+    it('should instantiate a literal',function(){
+        const fileScript = `export const x = 5;`;
+        const { exported, recorder } = getExportedVariablesFromScript(fileScript,'file1.ts');
+
+        assert.lengthOf(exported, 1);
+
+        const exportedVars = exported.get('x');
+        assert.exists( exportedVars)
+
+        assert.lengthOf(exportedVars, 1);
+
+        const exportedVar = exportedVars[0];
+
+        const exportedVarType = exportedVar.getType();
+
+        assert.equal(exportedVarType.getText(), '5');
+        assert.equal(exportedVarType.getLiteralValue(), 5);
+        assert.isTrue(exportedVar.getType().isLiteral());
+
+        const ans = recorder.instantiateFakerOnType(exportedVarType,0);
+        assert.equal(ans, 5);
+
+    });
+
+
+
+
+    it.skip('should instantiate a literal boolean',function(){
+        const fileScript = `export const x = false;`;
+        const { exported, recorder } = getExportedVariablesFromScript(fileScript,'file2.ts');
+
+        assert.lengthOf(exported, 1);
+
+        const exportedVars = exported.get('x');
+        assert.exists( exportedVars)
+
+        assert.lengthOf(exportedVars, 1);
+
+        const exportedVar = exportedVars[0];
+
+        const exportedVarType = exportedVar.getType();
+
+        assert.equal(exportedVarType.getText(), 'false');
+        assert.equal(exportedVarType.getLiteralValue(), false);
+        console.log(exportedVarType.getLiteralValue);
+        assert.isTrue(exportedVar.getType().isLiteral());
+
+        const ans = recorder.instantiateFakerOnType(exportedVarType,0);
+        assert.equal(ans, 5);
+
+    })
+
+    it('should instantiate an object', function() {
+        const fileScript = `export const x = {x:true,y:5};`;
+        const { exported, recorder } = getExportedVariablesFromScript(fileScript, 'file3.ts');
+
+        assert.lengthOf(exported, 1);
+
+        const exportedVars = exported.get('x');
+        assert.exists( exportedVars)
+
+        assert.lengthOf(exportedVars, 1);
+
+        const exportedVar = exportedVars[0];
+
+        const exportedVarType = exportedVar.getType();
+
+        // console.log(exportedVarType.getLiteralValue);
+        assert.isFalse(exportedVar.getType().isLiteral());
+
+        const ans = recorder.instantiateFakerOnType(exportedVarType,0);
+        assert.isBoolean(ans.x);
+        assert.isNumber(ans.y);
+
+    })
+    it('should instantiate a tuple object', function() {
+        const fileScript = `export const x = [10,'a'] as const;`;
+        const { exported, recorder } = getExportedVariablesFromScript(fileScript, 'file-tuple.ts');
+
+        assert.lengthOf(exported, 1);
+
+        const exportedVars = exported.get('x');
+        assert.exists( exportedVars)
+
+        assert.lengthOf(exportedVars, 1);
+
+        const exportedVar = exportedVars[0];
+
+        const exportedVarType = exportedVar.getType();
+
+        // console.log(exportedVarType.getLiteralValue);
+        assert.isFalse(exportedVar.getType().isLiteral());
+
+        const ans = recorder.instantiateFakerOnType(exportedVarType);
+        console.log(ans);
+        assert.isArray(ans);
+        assert.isArray([10, 'a'], ans);
+        // assert.isBoolean(ans.x);
+        // assert.isObject(ans.parent);
+        // assert.isNumber(ans.data);
+
+    })
+
+    it('should instantiate a nested object', function() {
+        const fileScript = `type A = {parent?:A,data:number}; export const x:A = {data:12};`;
+        const { exported, recorder } = getExportedVariablesFromScript(fileScript, 'file4.ts');
+
+        assert.lengthOf(exported, 1);
+
+        const exportedVars = exported.get('x');
+        assert.exists( exportedVars)
+
+        assert.lengthOf(exportedVars, 1);
+
+        const exportedVar = exportedVars[0];
+
+        const exportedVarType = exportedVar.getType();
+
+        // console.log(exportedVarType.getLiteralValue);
+        assert.isFalse(exportedVar.getType().isLiteral());
+
+        const ans = recorder.instantiateFakerOnType(exportedVarType);
+        console.log(ans);
+        // assert.isBoolean(ans.x);
+        assert.isObject(ans.parent);
+        assert.isNumber(ans.data);
+
+    })
+
+    it('should instantiate a callback', function() {
+        const fileScript = `export const x = ()=>{return 0;}`;
+        const { exported, recorder } = getExportedVariablesFromScript(fileScript, 'file5.ts');
+
+        assert.lengthOf(exported, 1);
+
+        const exportedVars = exported.get('x');
+        assert.exists( exportedVars)
+
+        assert.lengthOf(exportedVars, 1);
+
+        const exportedVar = exportedVars[0];
+
+        const exportedVarType = exportedVar.getType();
+
+        // console.log(exportedVarType.getLiteralValue);
+        assert.isFalse(exportedVar.getType().isLiteral());
+
+        const ans = recorder.instantiateFakerOnType(exportedVarType);
+        assert.isFunction(ans);
+        assert.isNumber(ans());
+
+    })
+
+    it('should instantiate a buffer', function() {
+        const fileScript = `export const x = Buffer.from('hello world');`;
+        const { exported, recorder } = getExportedVariablesFromScript(fileScript, 'file6.ts');
+
+        assert.lengthOf(exported, 1);
+
+        const exportedVars = exported.get('x');
+        assert.exists( exportedVars)
+
+        assert.lengthOf(exportedVars, 1);
+
+        const exportedVar = exportedVars[0];
+
+        const exportedVarType = exportedVar.getType();
+
+        // console.log(exportedVarType.getLiteralValue);
+        assert.isFalse(exportedVar.getType().isLiteral());
+
+        const ans = recorder.instantiateFakerOnType(exportedVarType);
+
+        assert.isObject(ans);
+        // assert.isNumber(ans());
+
+    })
+
+
+    function getExportedVariablesFromScript(fileScript,label) {
+        const sourceFile = project.createSourceFile(label, fileScript);
+
+
+        const exported = sourceFile.getExportedDeclarations();
+        return { exported, recorder };
+    }
+})