Improve context for errors thrown by compiler
This commit introduces a custom error object to provide additional context for errors throwing during parsing and compiling operations, improving troubleshooting. By integrating error context handling, the error messages become more informative and user-friendly, providing sequence of trace with context to aid in troubleshooting. Changes include: - Introduce custom error object that extends errors with contextual information. This replaces previous usages of `AggregateError` which is not displayed well by browsers when logged. - Improve parsing functions to encapsulate error context with more details. - Increase unit test coverage and refactor the related code to be more testable.
This commit is contained in:
undergroundwires
@@ -17,7 +17,7 @@ describe('FunctionCallArgument', () => {
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itEachAbsentStringValue((absentValue) => {
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// arrange
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const parameterName = 'paramName';
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const expectedError = `missing argument value for "${parameterName}"`;
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const expectedError = `Missing argument value for the parameter "${parameterName}".`;
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const argumentValue = absentValue;
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// act
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const act = () => new FunctionCallArgumentBuilder()
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@@ -1,7 +1,7 @@
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/* eslint-disable max-classes-per-file */
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import { describe, it, expect } from 'vitest';
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import { FunctionCallSequenceCompiler } from '@/application/Parser/Script/Compiler/Function/Call/Compiler/FunctionCallSequenceCompiler';
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import { itIsSingleton } from '@tests/unit/shared/TestCases/SingletonTests';
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import { itIsSingletonFactory } from '@tests/unit/shared/TestCases/SingletonFactoryTests';
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import { itEachAbsentCollectionValue } from '@tests/unit/shared/TestCases/AbsentTests';
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import type { SingleCallCompiler } from '@/application/Parser/Script/Compiler/Function/Call/Compiler/SingleCall/SingleCallCompiler';
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import type { CodeSegmentMerger } from '@/application/Parser/Script/Compiler/Function/Call/Compiler/CodeSegmentJoin/CodeSegmentMerger';
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@@ -17,7 +17,7 @@ import { expectExists } from '@tests/shared/Assertions/ExpectExists';
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describe('FunctionCallSequenceCompiler', () => {
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describe('instance', () => {
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itIsSingleton({
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itIsSingletonFactory({
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getter: () => FunctionCallSequenceCompiler.instance,
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expectedType: FunctionCallSequenceCompiler,
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});
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@@ -9,7 +9,9 @@ import { SingleCallCompilerStub } from '@tests/unit/shared/Stubs/SingleCallCompi
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import { CompiledCodeStub } from '@tests/unit/shared/Stubs/CompiledCodeStub';
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import type { FunctionCall } from '@/application/Parser/Script/Compiler/Function/Call/FunctionCall';
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import type { CompiledCode } from '@/application/Parser/Script/Compiler/Function/Call/Compiler/CompiledCode';
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import { expectDeepThrowsError } from '@tests/shared/Assertions/ExpectDeepThrowsError';
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import { itThrowsContextualError } from '@tests/unit/application/Parser/ContextualErrorTester';
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import type { ErrorWithContextWrapper } from '@/application/Parser/ContextualError';
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import { errorWithContextWrapperStub } from '@tests/unit/shared/Stubs/ErrorWithContextWrapperStub';
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describe('NestedFunctionCallCompiler', () => {
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describe('canCompile', () => {
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@@ -43,12 +45,12 @@ describe('NestedFunctionCallCompiler', () => {
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// arrange
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const argumentCompiler = new ArgumentCompilerStub();
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const expectedContext = new FunctionCallCompilationContextStub();
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const { frontFunc, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const { frontFunction, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const compiler = new NestedFunctionCallCompilerBuilder()
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.withArgumentCompiler(argumentCompiler)
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.build();
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// act
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compiler.compileFunction(frontFunc, callToFrontFunc, expectedContext);
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compiler.compileFunction(frontFunction, callToFrontFunc, expectedContext);
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// assert
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const calls = argumentCompiler.callHistory.filter((call) => call.methodName === 'createCompiledNestedCall');
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expect(calls).have.lengthOf(1);
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@@ -59,33 +61,37 @@ describe('NestedFunctionCallCompiler', () => {
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// arrange
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const argumentCompiler = new ArgumentCompilerStub();
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const expectedContext = new FunctionCallCompilationContextStub();
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const { frontFunc, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const { frontFunction, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const expectedParentCall = callToFrontFunc;
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const compiler = new NestedFunctionCallCompilerBuilder()
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.withArgumentCompiler(argumentCompiler)
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.build();
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// act
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compiler.compileFunction(frontFunc, callToFrontFunc, expectedContext);
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compiler.compileFunction(frontFunction, callToFrontFunc, expectedContext);
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// assert
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const calls = argumentCompiler.callHistory.filter((call) => call.methodName === 'createCompiledNestedCall');
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expect(calls).have.lengthOf(1);
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const [,actualParentCall] = calls[0].args;
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expect(actualParentCall).to.equal(callToFrontFunc);
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expect(actualParentCall).to.equal(expectedParentCall);
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});
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it('uses correct nested call', () => {
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// arrange
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const argumentCompiler = new ArgumentCompilerStub();
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const expectedContext = new FunctionCallCompilationContextStub();
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const { frontFunc, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const {
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frontFunction, callToDeepFunc, callToFrontFunc,
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} = createSingleFuncCallingAnotherFunc();
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const expectedNestedCall = callToDeepFunc;
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const compiler = new NestedFunctionCallCompilerBuilder()
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.withArgumentCompiler(argumentCompiler)
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.build();
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// act
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compiler.compileFunction(frontFunc, callToFrontFunc, expectedContext);
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compiler.compileFunction(frontFunction, callToFrontFunc, expectedContext);
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// assert
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const calls = argumentCompiler.callHistory.filter((call) => call.methodName === 'createCompiledNestedCall');
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expect(calls).have.lengthOf(1);
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const [actualNestedCall] = calls[0].args;
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expect(actualNestedCall).to.deep.equal(callToFrontFunc);
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expect(actualNestedCall).to.deep.equal(expectedNestedCall);
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});
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});
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describe('re-compilation with compiled args', () => {
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@@ -94,11 +100,11 @@ describe('NestedFunctionCallCompiler', () => {
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const singleCallCompilerStub = new SingleCallCompilerStub();
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const expectedContext = new FunctionCallCompilationContextStub()
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.withSingleCallCompiler(singleCallCompilerStub);
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const { frontFunc, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const { frontFunction, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const compiler = new NestedFunctionCallCompilerBuilder()
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.build();
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// act
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compiler.compileFunction(frontFunc, callToFrontFunc, expectedContext);
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compiler.compileFunction(frontFunction, callToFrontFunc, expectedContext);
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// assert
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const calls = singleCallCompilerStub.callHistory.filter((call) => call.methodName === 'compileSingleCall');
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expect(calls).have.lengthOf(1);
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@@ -113,12 +119,12 @@ describe('NestedFunctionCallCompiler', () => {
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const singleCallCompilerStub = new SingleCallCompilerStub();
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const context = new FunctionCallCompilationContextStub()
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.withSingleCallCompiler(singleCallCompilerStub);
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const { frontFunc, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const { frontFunction, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const compiler = new NestedFunctionCallCompilerBuilder()
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.withArgumentCompiler(argumentCompilerStub)
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.build();
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// act
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compiler.compileFunction(frontFunc, callToFrontFunc, context);
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compiler.compileFunction(frontFunction, callToFrontFunc, context);
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// assert
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const calls = singleCallCompilerStub.callHistory.filter((call) => call.methodName === 'compileSingleCall');
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expect(calls).have.lengthOf(1);
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@@ -140,9 +146,9 @@ describe('NestedFunctionCallCompiler', () => {
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.withScenario({ givenNestedFunctionCall: callToDeepFunc1, result: callToDeepFunc1 })
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.withScenario({ givenNestedFunctionCall: callToDeepFunc2, result: callToDeepFunc2 });
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const expectedFlattenedCodes = [...singleCallCompilationScenario.values()].flat();
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const frontFunc = createSharedFunctionStubWithCalls()
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const frontFunction = createSharedFunctionStubWithCalls()
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.withCalls(callToDeepFunc1, callToDeepFunc2);
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const callToFrontFunc = new FunctionCallStub().withFunctionName(frontFunc.name);
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const callToFrontFunc = new FunctionCallStub().withFunctionName(frontFunction.name);
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const singleCallCompilerStub = new SingleCallCompilerStub()
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.withCallCompilationScenarios(singleCallCompilationScenario);
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const expectedContext = new FunctionCallCompilationContextStub()
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@@ -151,73 +157,105 @@ describe('NestedFunctionCallCompiler', () => {
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.withArgumentCompiler(argumentCompiler)
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.build();
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// act
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const actualCodes = compiler.compileFunction(frontFunc, callToFrontFunc, expectedContext);
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const actualCodes = compiler.compileFunction(frontFunction, callToFrontFunc, expectedContext);
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// assert
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expect(actualCodes).have.lengthOf(expectedFlattenedCodes.length);
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expect(actualCodes).to.have.members(expectedFlattenedCodes);
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});
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describe('error handling', () => {
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it('handles argument compiler errors', () => {
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describe('rethrows error from argument compiler', () => {
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// arrange
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const argumentCompilerError = new Error('Test error');
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const expectedInnerError = new Error(`Expected error from ${ArgumentCompilerStub.name}`);
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const calleeFunctionName = 'expectedCalleeFunctionName';
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const callerFunctionName = 'expectedCallerFunctionName';
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const expectedErrorMessage = buildRethrowErrorMessage({
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callee: calleeFunctionName,
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caller: callerFunctionName,
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});
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const { frontFunction, callToFrontFunc } = createSingleFuncCallingAnotherFunc({
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frontFunctionName: callerFunctionName,
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deepFunctionName: calleeFunctionName,
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});
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const argumentCompilerStub = new ArgumentCompilerStub();
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argumentCompilerStub.createCompiledNestedCall = () => {
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throw argumentCompilerError;
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throw expectedInnerError;
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};
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const { frontFunc, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const expectedError = new AggregateError(
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[argumentCompilerError],
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`Error with call to "${callToFrontFunc.functionName}" function from "${callToFrontFunc.functionName}" function`,
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);
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const compiler = new NestedFunctionCallCompilerBuilder()
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.withArgumentCompiler(argumentCompilerStub)
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.build();
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// act
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const act = () => compiler.compileFunction(
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frontFunc,
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callToFrontFunc,
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new FunctionCallCompilationContextStub(),
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);
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// assert
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expectDeepThrowsError(act, expectedError);
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const builder = new NestedFunctionCallCompilerBuilder()
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.withArgumentCompiler(argumentCompilerStub);
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itThrowsContextualError({
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// act
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throwingAction: (wrapError) => {
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builder
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.withErrorWrapper(wrapError)
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.build()
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.compileFunction(
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frontFunction,
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callToFrontFunc,
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new FunctionCallCompilationContextStub(),
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);
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},
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// assert
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expectedWrappedError: expectedInnerError,
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expectedContextMessage: expectedErrorMessage,
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});
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});
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it('handles single call compiler errors', () => {
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describe('rethrows error from single call compiler', () => {
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// arrange
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const singleCallCompilerError = new Error('Test error');
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const expectedInnerError = new Error(`Expected error from ${SingleCallCompilerStub.name}`);
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const calleeFunctionName = 'expectedCalleeFunctionName';
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const callerFunctionName = 'expectedCallerFunctionName';
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const expectedErrorMessage = buildRethrowErrorMessage({
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callee: calleeFunctionName,
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caller: callerFunctionName,
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});
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const { frontFunction, callToFrontFunc } = createSingleFuncCallingAnotherFunc({
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frontFunctionName: callerFunctionName,
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deepFunctionName: calleeFunctionName,
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});
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const singleCallCompiler = new SingleCallCompilerStub();
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singleCallCompiler.compileSingleCall = () => {
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throw singleCallCompilerError;
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throw expectedInnerError;
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};
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const context = new FunctionCallCompilationContextStub()
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.withSingleCallCompiler(singleCallCompiler);
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const { frontFunc, callToFrontFunc } = createSingleFuncCallingAnotherFunc();
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const expectedError = new AggregateError(
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[singleCallCompilerError],
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`Error with call to "${callToFrontFunc.functionName}" function from "${callToFrontFunc.functionName}" function`,
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);
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const compiler = new NestedFunctionCallCompilerBuilder()
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.build();
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// act
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const act = () => compiler.compileFunction(
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frontFunc,
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callToFrontFunc,
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context,
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);
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// assert
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expectDeepThrowsError(act, expectedError);
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const builder = new NestedFunctionCallCompilerBuilder();
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itThrowsContextualError({
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// act
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throwingAction: (wrapError) => {
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builder
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.withErrorWrapper(wrapError)
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.build()
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.compileFunction(
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frontFunction,
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callToFrontFunc,
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context,
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);
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},
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// assert
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expectedWrappedError: expectedInnerError,
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expectedContextMessage: expectedErrorMessage,
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});
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});
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});
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});
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});
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function createSingleFuncCallingAnotherFunc() {
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const deepFunc = createSharedFunctionStubWithCode();
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const callToDeepFunc = new FunctionCallStub().withFunctionName(deepFunc.name);
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const frontFunc = createSharedFunctionStubWithCalls().withCalls(callToDeepFunc);
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const callToFrontFunc = new FunctionCallStub().withFunctionName(frontFunc.name);
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function createSingleFuncCallingAnotherFunc(
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functionNames?: {
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readonly frontFunctionName?: string;
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readonly deepFunctionName?: string;
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},
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) {
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const deepFunction = createSharedFunctionStubWithCode()
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.withName(functionNames?.deepFunctionName ?? 'deep-function (is called by front-function)');
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const callToDeepFunc = new FunctionCallStub().withFunctionName(deepFunction.name);
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const frontFunction = createSharedFunctionStubWithCalls()
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.withCalls(callToDeepFunc)
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.withName(functionNames?.frontFunctionName ?? 'front-function (calls deep-function)');
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const callToFrontFunc = new FunctionCallStub().withFunctionName(frontFunction.name);
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return {
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deepFunc,
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frontFunc,
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deepFunction,
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frontFunction,
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callToFrontFunc,
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callToDeepFunc,
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};
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@@ -226,14 +264,31 @@ function createSingleFuncCallingAnotherFunc() {
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class NestedFunctionCallCompilerBuilder {
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private argumentCompiler: ArgumentCompiler = new ArgumentCompilerStub();
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private wrapError: ErrorWithContextWrapper = errorWithContextWrapperStub;
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public withArgumentCompiler(argumentCompiler: ArgumentCompiler): this {
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this.argumentCompiler = argumentCompiler;
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return this;
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}
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public withErrorWrapper(wrapError: ErrorWithContextWrapper): this {
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this.wrapError = wrapError;
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return this;
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}
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public build(): NestedFunctionCallCompiler {
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return new NestedFunctionCallCompiler(
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this.argumentCompiler,
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this.wrapError,
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);
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}
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}
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function buildRethrowErrorMessage(
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functionNames: {
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readonly caller: string;
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readonly callee: string;
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},
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) {
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return `Failed to call '${functionNames.callee}' (callee function) from '${functionNames.caller}' (caller function).`;
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}
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@@ -11,6 +11,7 @@ import type { FunctionCallCompilationContext } from '@/application/Parser/Script
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import { FunctionCallCompilationContextStub } from '@tests/unit/shared/Stubs/FunctionCallCompilationContextStub';
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import { CompiledCodeStub } from '@tests/unit/shared/Stubs/CompiledCodeStub';
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import type { SingleCallCompiler } from '@/application/Parser/Script/Compiler/Function/Call/Compiler/SingleCall/SingleCallCompiler';
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import { collectExceptionMessage } from '@tests/unit/shared/ExceptionCollector';
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describe('AdaptiveFunctionCallCompiler', () => {
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describe('compileSingleCall', () => {
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@@ -28,40 +29,40 @@ describe('AdaptiveFunctionCallCompiler', () => {
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functionParameters: ['expected-parameter'],
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callParameters: ['unexpected-parameter'],
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expectedError:
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-parameter"`
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+ '. Expected parameter(s): "expected-parameter"',
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-parameter".`
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+ '\nExpected parameter(s): "expected-parameter"',
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},
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{
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description: 'provided: multiple unexpected parameters, when: different one is expected',
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functionParameters: ['expected-parameter'],
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callParameters: ['unexpected-parameter1', 'unexpected-parameter2'],
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expectedError:
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-parameter1", "unexpected-parameter2"`
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+ '. Expected parameter(s): "expected-parameter"',
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-parameter1", "unexpected-parameter2".`
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+ '\nExpected parameter(s): "expected-parameter"',
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},
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{
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description: 'provided: an unexpected parameter, when: multiple parameters are expected',
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functionParameters: ['expected-parameter1', 'expected-parameter2'],
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callParameters: ['expected-parameter1', 'expected-parameter2', 'unexpected-parameter'],
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expectedError:
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-parameter"`
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+ '. Expected parameter(s): "expected-parameter1", "expected-parameter2"',
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-parameter".`
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+ '\nExpected parameter(s): "expected-parameter1", "expected-parameter2"',
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},
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{
|
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description: 'provided: an unexpected parameter, when: none required',
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functionParameters: [],
|
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callParameters: ['unexpected-call-parameter'],
|
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expectedError:
|
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-call-parameter"`
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+ '. Expected parameter(s): none',
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-call-parameter".`
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+ '\nExpected parameter(s): none',
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},
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{
|
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description: 'provided: expected and unexpected parameter, when: one of them is expected',
|
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functionParameters: ['expected-parameter'],
|
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callParameters: ['expected-parameter', 'unexpected-parameter'],
|
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expectedError:
|
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-parameter"`
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+ '. Expected parameter(s): "expected-parameter"',
|
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`Function "${functionName}" has unexpected parameter(s) provided: "unexpected-parameter".`
|
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+ '\nExpected parameter(s): "expected-parameter"',
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||||
},
|
||||
];
|
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testCases.forEach(({
|
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@@ -88,7 +89,8 @@ describe('AdaptiveFunctionCallCompiler', () => {
|
||||
// act
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||||
const act = () => builder.compileSingleCall();
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// assert
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expect(act).to.throw(expectedError);
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const errorMessage = collectExceptionMessage(act);
|
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expect(errorMessage).to.include(expectedError);
|
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});
|
||||
});
|
||||
});
|
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|
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@@ -7,38 +7,44 @@ import type { IExpressionsCompiler } from '@/application/Parser/Script/Compiler/
|
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import { ExpressionsCompilerStub } from '@tests/unit/shared/Stubs/ExpressionsCompilerStub';
|
||||
import { FunctionCallCompilationContextStub } from '@tests/unit/shared/Stubs/FunctionCallCompilationContextStub';
|
||||
import { FunctionCallStub } from '@tests/unit/shared/Stubs/FunctionCallStub';
|
||||
import { expectDeepThrowsError } from '@tests/shared/Assertions/ExpectDeepThrowsError';
|
||||
import { FunctionCallArgumentCollectionStub } from '@tests/unit/shared/Stubs/FunctionCallArgumentCollectionStub';
|
||||
import { createSharedFunctionStubWithCode } from '@tests/unit/shared/Stubs/SharedFunctionStub';
|
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import { FunctionParameterCollectionStub } from '@tests/unit/shared/Stubs/FunctionParameterCollectionStub';
|
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import { SharedFunctionCollectionStub } from '@tests/unit/shared/Stubs/SharedFunctionCollectionStub';
|
||||
import { itThrowsContextualError } from '@tests/unit/application/Parser/ContextualErrorTester';
|
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import type { ErrorWithContextWrapper } from '@/application/Parser/ContextualError';
|
||||
import { errorWithContextWrapperStub } from '@tests/unit/shared/Stubs/ErrorWithContextWrapperStub';
|
||||
|
||||
describe('NestedFunctionArgumentCompiler', () => {
|
||||
describe('createCompiledNestedCall', () => {
|
||||
it('should handle error from expressions compiler', () => {
|
||||
describe('rethrows error from expressions compiler', () => {
|
||||
// arrange
|
||||
const expectedInnerError = new Error('child-');
|
||||
const parameterName = 'parameterName';
|
||||
const expectedErrorMessage = `Error when compiling argument for "${parameterName}"`;
|
||||
const nestedCall = new FunctionCallStub()
|
||||
.withFunctionName('nested-function-call')
|
||||
.withArgumentCollection(new FunctionCallArgumentCollectionStub()
|
||||
.withArgument(parameterName, 'unimportant-value'));
|
||||
const parentCall = new FunctionCallStub()
|
||||
.withFunctionName('parent-function-call');
|
||||
const expressionsCompilerError = new Error('child-');
|
||||
const expectedError = new AggregateError(
|
||||
[expressionsCompilerError],
|
||||
`Error when compiling argument for "${parameterName}"`,
|
||||
);
|
||||
const expressionsCompiler = new ExpressionsCompilerStub();
|
||||
expressionsCompiler.compileExpressions = () => { throw expressionsCompilerError; };
|
||||
expressionsCompiler.compileExpressions = () => { throw expectedInnerError; };
|
||||
const builder = new NestedFunctionArgumentCompilerBuilder()
|
||||
.withParentFunctionCall(parentCall)
|
||||
.withNestedFunctionCall(nestedCall)
|
||||
.withExpressionsCompiler(expressionsCompiler);
|
||||
// act
|
||||
const act = () => builder.createCompiledNestedCall();
|
||||
// assert
|
||||
expectDeepThrowsError(act, expectedError);
|
||||
itThrowsContextualError({
|
||||
// act
|
||||
throwingAction: (wrapError) => {
|
||||
builder
|
||||
.withErrorWrapper(wrapError)
|
||||
.createCompiledNestedCall();
|
||||
},
|
||||
// assert
|
||||
expectedWrappedError: expectedInnerError,
|
||||
expectedContextMessage: expectedErrorMessage,
|
||||
});
|
||||
});
|
||||
describe('compilation', () => {
|
||||
describe('without arguments', () => {
|
||||
@@ -258,6 +264,8 @@ class NestedFunctionArgumentCompilerBuilder implements ArgumentCompiler {
|
||||
|
||||
private context: FunctionCallCompilationContext = new FunctionCallCompilationContextStub();
|
||||
|
||||
private wrapError: ErrorWithContextWrapper = errorWithContextWrapperStub;
|
||||
|
||||
public withExpressionsCompiler(expressionsCompiler: IExpressionsCompiler): this {
|
||||
this.expressionsCompiler = expressionsCompiler;
|
||||
return this;
|
||||
@@ -278,8 +286,16 @@ class NestedFunctionArgumentCompilerBuilder implements ArgumentCompiler {
|
||||
return this;
|
||||
}
|
||||
|
||||
public withErrorWrapper(wrapError: ErrorWithContextWrapper): this {
|
||||
this.wrapError = wrapError;
|
||||
return this;
|
||||
}
|
||||
|
||||
public createCompiledNestedCall(): FunctionCall {
|
||||
const compiler = new NestedFunctionArgumentCompiler(this.expressionsCompiler);
|
||||
const compiler = new NestedFunctionArgumentCompiler(
|
||||
this.expressionsCompiler,
|
||||
this.wrapError,
|
||||
);
|
||||
return compiler.createCompiledNestedCall(
|
||||
this.nestedFunctionCall,
|
||||
this.parentFunctionCall,
|
||||
|
||||
Reference in New Issue
Block a user