package runtime_test

import (
	"fmt"
	"testing"
)

func TestEquality(t *testing.T) {
	testEquality(t, `1`, `1`, true)
	testEquality(t, `1`, `2`, false)

	testEquality(t, `1.0`, `1.0`, true)
	testEquality(t, `1.0`, `1.1`, false)

	testEquality(t, `true`, `true`, true)
	testEquality(t, `true`, `false`, false)

	testEquality(t, `"foo"`, `"foo"`, true)
	testEquality(t, `"foo"`, `"bar"`, false)

	testEquality(t, `'f'`, `'f'`, true)
	testEquality(t, `'f'`, `'b'`, false)

	testEquality(t, `[]`, `[]`, true)
	testEquality(t, `[1]`, `[1]`, true)
	testEquality(t, `[1]`, `[1, 2]`, false)
	testEquality(t, `["foo", "bar"]`, `["foo", "bar"]`, true)
	testEquality(t, `["foo", "bar"]`, `["bar", "foo"]`, false)

	testEquality(t, `{}`, `{}`, true)
	testEquality(t, `{a: 1, b: 2}`, `{b: 2, a: 1}`, true)
	testEquality(t, `{a: 1, b: 2}`, `{b: 2}`, false)
	testEquality(t, `{a: 1, b: {}}`, `{b: {}, a: 1}`, true)

	testEquality(t, `1`, `"foo"`, false)
	testEquality(t, `1`, `true`, false)
	testEquality(t, `[1]`, `["1"]`, false)
	testEquality(t, `[1, [2]]`, `[1, ["2"]]`, false)
	testEquality(t, `{a: 1}`, `{a: "1"}`, false)
	testEquality(t, `{a: 1, b: {c: 2}}`, `{a: 1, b: {c: "2"}}`, false)
}

func testEquality(t *testing.T, lhs, rhs string, expected bool) {
	// 1. equality is commutative
	// 2. equality and inequality must be always opposite
	expect(t, fmt.Sprintf("out = %s == %s", lhs, rhs), expected)
	expect(t, fmt.Sprintf("out = %s == %s", rhs, lhs), expected)
	expect(t, fmt.Sprintf("out = %s != %s", lhs, rhs), !expected)
	expect(t, fmt.Sprintf("out = %s != %s", rhs, lhs), !expected)
}