/**
 * These tests check the version comparison logic in the multiversion test support code.
 *
 * In particular, it tests that the shell version (returned by version()) compares equal to
 * "latest", not equal to "last-lts", and x.y compares equal to x.y.z, but that x.w does
 * not.
 */

// Checking UUID consistency involves talking to a shard node, which in this test is shutdown
TestData.skipCheckingUUIDsConsistentAcrossCluster = true;

(function() {
"use strict";

function assertBinVersionsEqual(v1, v2) {
    assert(MongoRunner.areBinVersionsTheSame(v1, v2),
           "Expected \"" + v1 + "\" to equal \"" + v2 + "\"");
}

function assertBinVersionsNotEqual(v1, v2) {
    assert(!MongoRunner.areBinVersionsTheSame(v1, v2),
           "Expected \"" + v1 + "\" not to equal \"" + v2 + "\"");
}

function assertBinVersionComparesHigher(v1, v2) {
    assert.eq(1,
              MongoRunner.compareBinVersions(v1, v2),
              "Expected \"" + v1 + "\" to compare higher than \"" + v2 + "\"");
}

function assertBinVersionComparesLower(v1, v2) {
    assert.eq(-1,
              MongoRunner.compareBinVersions(v1, v2),
              "Expected \"" + v1 + "\" to compare lower than \"" + v2 + "\"");
}

function assertBinVersionComparesEqual(v1, v2) {
    assert.eq(0,
              MongoRunner.compareBinVersions(v1, v2),
              "Expected \"" + v1 + "\" to compare equal to \"" + v2 + "\"");
}

// "latest" is the same version as the shell, "last-lts" is not.
assertBinVersionsEqual("latest", version());
assertBinVersionsEqual("", "latest");
assertBinVersionsEqual("", version());

assertBinVersionComparesEqual("latest", version());
assertBinVersionComparesEqual("", "latest");
assertBinVersionComparesEqual("", version());

assertBinVersionsNotEqual("latest", "last-lts");
assertBinVersionsNotEqual("last-lts", version());

assertBinVersionsNotEqual("latest", "last-continuous");
assertBinVersionsNotEqual("last-continuous", version());

assertBinVersionComparesHigher("latest", "last-lts");
assertBinVersionComparesLower("last-lts", version());

assertBinVersionComparesHigher("latest", "last-continuous");
assertBinVersionComparesLower("last-continuous", version());

if (lastContinuousFCV === lastLTSFCV) {
    assertBinVersionComparesEqual("last-lts", "last-continuous");
}

// 3.2 means 3.2.z for any value of z. It does not mean 3.0 or 3.0.w.
assertBinVersionsEqual("3.2", "3.2.4");
assertBinVersionsEqual("3.2.4", "3.2");
assertBinVersionsNotEqual("3.2", "3.0");
assertBinVersionsNotEqual("3.0.9", "3.2.9");

assertBinVersionComparesEqual("3.2", "3.2.4");
assertBinVersionComparesEqual("3.2.4", "3.2");
assertBinVersionComparesHigher("3.2", "3.0");
assertBinVersionComparesLower("3.0.9", "3.2.9");

assertBinVersionsEqual("3.4", "3.4.0-abcd");
assertBinVersionsEqual("3.4.0", "3.4.0-abcd");

assertBinVersionComparesEqual("3.4", "3.4.0-abcd");
assertBinVersionComparesEqual("3.4.0", "3.4.0-abcd");
assertBinVersionComparesHigher("3.6.0", "3.4.0-abcd");
assertBinVersionComparesHigher("4.0.0", "3.6.99-abcd");
assertBinVersionComparesHigher("3.4.1", "3.4.0-abcd");
assertBinVersionComparesLower("3.4.0-abc", "3.4.1-xyz");

// Prohibit versions that don't have at least two components (3 is no good, 3.2 is).
assert.throws(MongoRunner.areBinVersionsTheSame, ["3", "3.2"]);
assert.throws(MongoRunner.areBinVersionsTheSame, ["3.2", "3"]);

// Throw an error when versions differ only by githash.
assert.throws(MongoRunner.compareBinVersions, ["3.4.1-abc", "3.4.1-xyz"]);
}());