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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 17:32:43 +0000
commit6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch)
treea68f146d7fa01f0134297619fbe7e33db084e0aa /tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-boolean-length-check.js
parentInitial commit. (diff)
downloadthunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz
thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-boolean-length-check.js')
-rw-r--r--tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-boolean-length-check.js96
1 files changed, 96 insertions, 0 deletions
diff --git a/tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-boolean-length-check.js b/tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-boolean-length-check.js
new file mode 100644
index 0000000000..102112a3f5
--- /dev/null
+++ b/tools/lint/eslint/eslint-plugin-mozilla/tests/prefer-boolean-length-check.js
@@ -0,0 +1,96 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// ------------------------------------------------------------------------------
+// Requirements
+// ------------------------------------------------------------------------------
+
+var rule = require("../lib/rules/prefer-boolean-length-check");
+var RuleTester = require("eslint").RuleTester;
+
+const ruleTester = new RuleTester({ parserOptions: { ecmaVersion: "latest" } });
+
+// ------------------------------------------------------------------------------
+// Tests
+// ------------------------------------------------------------------------------
+
+function invalidError() {
+ return [{ messageId: "preferBooleanCheck", type: "BinaryExpression" }];
+}
+
+ruleTester.run("check-length", rule, {
+ valid: [
+ "if (foo.length && foo.length) {}",
+ "if (!foo.length) {}",
+ "if (foo.value == 0) {}",
+ "if (foo.value > 0) {}",
+ "if (0 == foo.value) {}",
+ "if (0 < foo.value) {}",
+ "var a = !!foo.length",
+ "function bar() { return !!foo.length }",
+ ],
+ invalid: [
+ {
+ code: "if (foo.length == 0) {}",
+ output: "if (!foo.length) {}",
+ errors: invalidError(),
+ },
+ {
+ code: "if (foo.length > 0) {}",
+ output: "if (foo.length) {}",
+ errors: invalidError(),
+ },
+ {
+ code: "if (0 < foo.length) {}",
+ output: "if (foo.length) {}",
+ errors: invalidError(),
+ },
+ {
+ code: "if (0 == foo.length) {}",
+ output: "if (!foo.length) {}",
+ errors: invalidError(),
+ },
+ {
+ code: "if (foo && foo.length == 0) {}",
+ output: "if (foo && !foo.length) {}",
+ errors: invalidError(),
+ },
+ {
+ code: "if (foo.bar.length == 0) {}",
+ output: "if (!foo.bar.length) {}",
+ errors: invalidError(),
+ },
+ {
+ code: "var a = foo.length>0",
+ output: "var a = !!foo.length",
+ errors: invalidError(),
+ },
+ {
+ code: "function bar() { return foo.length>0 }",
+ output: "function bar() { return !!foo.length }",
+ errors: invalidError(),
+ },
+ {
+ code: "if (foo && bar.length>0) {}",
+ output: "if (foo && bar.length) {}",
+ errors: invalidError(),
+ },
+ {
+ code: "while (foo && bar.length>0) {}",
+ output: "while (foo && bar.length) {}",
+ errors: invalidError(),
+ },
+ {
+ code: "x = y && bar.length > 0",
+ output: "x = y && !!bar.length",
+ errors: invalidError(),
+ },
+ {
+ code: "function bar() { return x && foo.length > 0}",
+ output: "function bar() { return x && !!foo.length}",
+ errors: invalidError(),
+ },
+ ],
+});