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node-api: get Node API version used by addon
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| { | ||
| "targets": [ | ||
| { | ||
| "target_name": "test_reference_all_types", | ||
| "sources": [ "test_reference_all_types.c" ], | ||
| "defines": [ 'NAPI_EXPERIMENTAL' ] | ||
| } | ||
| ] | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| 'use strict'; | ||
| // Flags: --expose-gc | ||
| // | ||
| // Testing API calls for references to all value types. | ||
| // This test uses NAPI_MODULE_INIT macro to initialize module. | ||
| // | ||
| const { gcUntil, buildType } = require('../../common'); | ||
| const assert = require('assert'); | ||
| const addon = require(`./build/${buildType}/test_reference_all_types`); | ||
|
|
||
| async function runTests() { | ||
| let allEntries = []; | ||
|
|
||
| (() => { | ||
| // Create values of all napi_valuetype types. | ||
| const undefinedValue = undefined; | ||
| const nullValue = null; | ||
| const booleanValue = false; | ||
| const numberValue = 42; | ||
| const stringValue = 'test_string'; | ||
| const symbolValue = Symbol.for('test_symbol'); | ||
| const objectValue = { x: 1, y: 2 }; | ||
| const functionValue = (x, y) => x + y; | ||
| const externalValue = addon.createExternal(); | ||
| const bigintValue = 9007199254740991n; | ||
|
|
||
| allEntries = [ | ||
| { value: undefinedValue, canBeWeak: false }, | ||
| { value: nullValue, canBeWeak: false }, | ||
| { value: booleanValue, canBeWeak: false }, | ||
| { value: numberValue, canBeWeak: false }, | ||
| { value: stringValue, canBeWeak: false }, | ||
| { value: symbolValue, canBeWeak: false }, | ||
| { value: objectValue, canBeWeak: true }, | ||
| { value: functionValue, canBeWeak: true }, | ||
| { value: externalValue, canBeWeak: true }, | ||
| { value: bigintValue, canBeWeak: false }, | ||
| ]; | ||
|
|
||
| // Go over all values of different types, create strong ref values for | ||
| // them, read the stored values, and check how the ref count works. | ||
| for (const entry of allEntries) { | ||
| const index = addon.createRef(entry.value); | ||
| const refValue = addon.getRefValue(index); | ||
| assert.strictEqual(entry.value, refValue); | ||
| assert.strictEqual(addon.ref(index), 2); | ||
| assert.strictEqual(addon.unref(index), 1); | ||
| assert.strictEqual(addon.unref(index), 0); | ||
| } | ||
|
|
||
| // The references become weak pointers when the ref count is 0. | ||
| // Here we know that the GC is not run yet because the values are | ||
| // still in the allEntries array. | ||
| allEntries.forEach((entry, index) => { | ||
| assert.strictEqual(addon.getRefValue(index), entry.value); | ||
| // Set to undefined to allow GC collect the value. | ||
| entry.value = undefined; | ||
| }); | ||
|
|
||
| // To check that GC pass is done. | ||
| const objWithFinalizer = {}; | ||
| addon.addFinalizer(objWithFinalizer); | ||
| })(); | ||
|
|
||
| assert.strictEqual(addon.getFinalizeCount(), 0); | ||
| await gcUntil('Wait until a finalizer is called', | ||
| () => (addon.getFinalizeCount() === 1)); | ||
|
|
||
| // Create and call finalizer again to make sure that we had another GC pass. | ||
| (() => { | ||
| const objWithFinalizer = {}; | ||
| addon.addFinalizer(objWithFinalizer); | ||
| })(); | ||
| await gcUntil('Wait until a finalizer is called again', | ||
| () => (addon.getFinalizeCount() === 2)); | ||
|
|
||
| // After GC and finalizers run, all values that support weak reference | ||
| // semantic must return undefined value. | ||
| // It also includes the value at index 0 because it is the undefined value. | ||
| // Other value types are not collected by GC. | ||
| allEntries.forEach((entry, index) => { | ||
| if (entry.canBeWeak || index === 0) { | ||
| assert.strictEqual(addon.getRefValue(index), undefined); | ||
| } else { | ||
| assert.notStrictEqual(addon.getRefValue(index), undefined); | ||
| } | ||
| addon.deleteRef(index); | ||
| }); | ||
| } | ||
| runTests(); |
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