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ant/tests/object_in_if.cjs
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object_in_if.cjs
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// Test objects in if statements
// Tests property access and truthiness evaluation
console.log("=== Object in If Statements Test ===\n");
// Test 1: Basic object property truthiness
console.log("Test 1: Object property truthiness");
let thing = {
hasThing: true,
hasOther: false,
count: 5,
name: "test"
};
if (thing.hasThing) {
console.log(" thing.hasThing is truthy: PASS");
}
if (!thing.hasOther) {
console.log(" !thing.hasOther is falsy: PASS");
}
if (thing.count) {
console.log(" thing.count (5) is truthy: PASS");
}
if (thing.name) {
console.log(" thing.name ('test') is truthy: PASS");
}
// Test 2: Undefined and null properties
console.log("\nTest 2: Undefined and null properties");
let obj = {
defined: "value",
nullValue: null,
undefinedValue: undefined,
zeroValue: 0,
emptyString: ""
};
if (!obj.nonExistent) {
console.log(" !obj.nonExistent (undefined): PASS");
}
if (!obj.nullValue) {
console.log(" !obj.nullValue (null): PASS");
}
if (!obj.undefinedValue) {
console.log(" !obj.undefinedValue (undefined): PASS");
}
if (!obj.zeroValue) {
console.log(" !obj.zeroValue (0): PASS");
}
if (!obj.emptyString) {
console.log(" !obj.emptyString (''): PASS");
}
if (obj.defined) {
console.log(" obj.defined ('value'): PASS");
}
// Test 3: Nested object properties
console.log("\nTest 3: Nested object properties");
let config = {
settings: {
enabled: true,
disabled: false,
nested: {
deep: "value"
}
}
};
if (config.settings) {
console.log(" config.settings exists: PASS");
}
if (config.settings.enabled) {
console.log(" config.settings.enabled is true: PASS");
}
if (!config.settings.disabled) {
console.log(" !config.settings.disabled is false: PASS");
}
if (config.settings.nested) {
console.log(" config.settings.nested exists: PASS");
}
if (config.settings.nested.deep) {
console.log(" config.settings.nested.deep has value: PASS");
}
// Test 4: Function properties
console.log("\nTest 4: Function properties");
let api = {
hasMethod: function() {
return "called";
},
noMethod: null
};
if (api.hasMethod) {
console.log(" api.hasMethod exists:", api.hasMethod());
}
if (!api.noMethod) {
console.log(" !api.noMethod is null: PASS");
}
// Test 5: Array properties
console.log("\nTest 5: Array properties");
let data = {
items: [1, 2, 3],
emptyItems: [],
noItems: null
};
if (data.items) {
console.log(" data.items exists, length:", data.items.length);
}
if (data.emptyItems) {
console.log(" data.emptyItems exists but empty, length:", data.emptyItems.length);
}
if (!data.noItems) {
console.log(" !data.noItems is null: PASS");
}
// Test 6: Conditional checks with property access
console.log("\nTest 6: Conditional property checks");
let user = {
name: "John",
age: 30,
active: true
};
if (user.name && user.age) {
console.log(" user.name && user.age both exist: PASS");
}
if (user.active && user.name) {
console.log(" user.active && user.name both truthy: PASS");
}
if (!user.deleted || user.active) {
console.log(" !user.deleted || user.active: PASS");
}
// Test 7: Return based on object property
console.log("\nTest 7: Return based on property");
function checkUser(user) {
if (!user) return { error: "no user" };
if (!user.name) return { error: "no name" };
return { success: true, name: user.name };
}
console.log(" With null:", checkUser(null));
console.log(" With no name:", checkUser({ age: 25 }));
console.log(" With name:", checkUser({ name: "Alice" }));
// Test 8: Object itself as condition
console.log("\nTest 8: Object as condition");
let obj1 = { value: 1 };
let obj2 = null;
let obj3 = undefined;
if (obj1) {
console.log(" obj1 (object) is truthy: PASS");
}
if (!obj2) {
console.log(" !obj2 (null) is falsy: PASS");
}
if (!obj3) {
console.log(" !obj3 (undefined) is falsy: PASS");
}
// Test 9: Boolean properties in complex conditions
console.log("\nTest 9: Complex boolean property checks");
let feature = {
enabled: true,
experimental: false,
beta: true,
stable: false
};
if (feature.enabled && feature.beta) {
console.log(" enabled && beta: PASS");
}
if (feature.enabled && !feature.stable) {
console.log(" enabled && !stable: PASS");
}
if (!feature.experimental && !feature.stable) {
console.log(" !experimental && !stable: PASS");
}
// Test 10: Property chain with guard
console.log("\nTest 10: Safe property access");
function getValue(obj) {
if (!obj) return "no object";
if (!obj.data) return "no data";
if (!obj.data.value) return "no value";
return obj.data.value;
}
console.log(" With null:", getValue(null));
console.log(" With no data:", getValue({}));
console.log(" With no value:", getValue({ data: {} }));
console.log(" With value:", getValue({ data: { value: "found" } }));
// Test 11: Optional chaining with undefined/null values
console.log("\nTest 11: Optional chaining (?.)");
const value = undefined;
const nullValue = null;
const obj11 = { nested: { deep: "value" } };
console.log(" value?.thing (undefined):", value?.thing);
console.log(" nullValue?.thing (null):", nullValue?.thing);
console.log(" obj11?.nested?.deep:", obj11?.nested?.deep);
console.log(" obj11?.missing?.deep:", obj11?.missing?.deep);
if (value?.thing) {
console.log(" FAIL: value?.thing should be undefined");
} else {
console.log(" value?.thing is falsy: PASS");
}
if (!nullValue?.thing) {
console.log(" !nullValue?.thing is falsy: PASS");
}
if (obj11?.nested?.deep) {
console.log(" obj11?.nested?.deep exists: PASS");
}
if (!obj11?.missing?.deep) {
console.log(" !obj11?.missing?.deep is falsy: PASS");
}
console.log("\n=== All tests completed ===");

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