chore: Add tests for no-constant-binary-expression

Author: retyui

Diff for: test/no-constant-binary-expression.js

@@ -0,0 +1,31 @@
+/*eslint-disable no-undef,no-unused-vars*/
+
+// Incorrect
+const value1 = +x == null; // eslint-disable-line no-constant-binary-expression
+
+const value2 = condition ? x : {} || DEFAULT; // eslint-disable-line no-constant-binary-expression
+
+const value3 = !foo == null; // eslint-disable-line no-constant-binary-expression
+
+const value4 = new Boolean(foo) === true; // eslint-disable-line no-constant-binary-expression
+
+const objIsEmpty = someObj === {}; // eslint-disable-line no-constant-binary-expression
+
+const arrIsEmpty = someArr === []; // eslint-disable-line no-constant-binary-expression
+
+const shortCircuit1 = condition1 && false && condition2; // eslint-disable-line no-constant-binary-expression
+
+const shortCircuit2 = condition1 || true || condition2; // eslint-disable-line no-constant-binary-expression
+
+// Correct
+const value11 = x == null;
+
+const value21 = (condition ? x : {}) || DEFAULT;
+
+const value31 = !(foo == null);
+
+const value41 = Boolean(foo) === true;
+
+const objIsEmpty1 = Object.keys(someObj).length === 0;
+
+const arrIsEmpty1 = someArr.length === 0;