fix: Boolean false value on inputs breaks configuration syntax

src/parser.ts

@@ -409,7 +409,8 @@ function parseIncludeInputs (ctx: any): {inputValue: any; inputType: InputType}
 
 function getInputValue (ctx: any) {
     const {inputs, interpolationKey, configFilePath, inputsSpecification} = ctx;
-    const inputValue = inputs[interpolationKey] || inputsSpecification.spec.inputs[interpolationKey]?.default;
+    const inputValue = inputs[interpolationKey] ??
+        inputsSpecification.spec.inputs[interpolationKey]?.default;
     assert(inputValue !== undefined, chalk`This GitLab CI configuration is invalid: \`{blueBright ${configFilePath}}\`: \`{blueBright ${interpolationKey}}\` input: required value has not been provided.`);
     return inputValue;
 }

tests/test-cases/include-inputs/input-templates/types/boolean/.gitlab-ci-2.yml

@@ -0,0 +1,7 @@
+---
+include:
+  - local: '/.gitlab-ci-input-template.yml'
+    inputs:
+      boolean_input: false
+stages:
+  - test

tests/test-cases/include-inputs/integration.test.ts

@@ -224,10 +224,11 @@ test_job:
     expect(writeStreams.stdoutLines[0]).toEqual(expected);
 });
 
-test("include-inputs for type boolean", async () => {
+test("include-inputs for type boolean (truthy)", async () => {
     const writeStreams = new WriteStreamsMock();
     await handler({
         cwd: "tests/test-cases/include-inputs/input-templates/types/boolean",
+        file: ".gitlab-ci-1.yml",
         preview: true,
         jsonSchemaValidation: true, // this test depends on the json schema validation, do not set to false
     }, writeStreams);
@@ -244,6 +245,27 @@ scan-website:
     expect(writeStreams.stdoutLines[0]).toEqual(expected);
 });
 
+test("include-inputs for type boolean (falsy)", async () => {
+    const writeStreams = new WriteStreamsMock();
+    await handler({
+        cwd: "tests/test-cases/include-inputs/input-templates/types/boolean",
+        file: ".gitlab-ci-2.yml",
+        preview: true,
+        jsonSchemaValidation: true, // this test depends on the json schema validation, do not set to false
+    }, writeStreams);
+
+    const expected = `---
+stages:
+  - .pre
+  - test
+  - .post
+scan-website:
+  script:
+    - echo false`;
+
+    expect(writeStreams.stdoutLines[0]).toEqual(expected);
+});
+
 test("include-inputs inputs validation for boolean", async () => {
     try {
         const writeStreams = new WriteStreamsMock();