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/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import "FSparseSnapshotTests.h"
#import "FSparseSnapshotTree.h"
#import "FSnapshotUtilities.h"
#import "FEmptyNode.h"
@implementation FSparseSnapshotTests
- (void) testBasicRememberAndFind {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
FPath* path = [[FPath alloc] initWith:@"a/b"];
id<FNode> node = [FSnapshotUtilities nodeFrom:@"sdfsd"];
[st rememberData:node onPath:path];
id<FNode> found = [st findPath:path];
XCTAssertFalse([found isEmpty], @"Should find node");
found = [st findPath:path.parent];
XCTAssertTrue(found == nil, @"Should not find a node");
}
- (void) testFindInsideAnExistingSnapshot {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
FPath* path = [[FPath alloc] initWith:@"t/tt"];
id<FNode> node = [FSnapshotUtilities nodeFrom:@{@"a": @"sdfsd", @"x": @5, @"999i": @YES}];
id<FNode> update = [FSnapshotUtilities nodeFrom:@{@"goats": @88}];
node = [node updateImmediateChild:@"apples" withNewChild:update];
[st rememberData:node onPath:path];
id<FNode> found = [st findPath:path];
XCTAssertFalse([found isEmpty], @"Should find the node we set");
found = [st findPath:[path childFromString:@"a"]];
XCTAssertTrue([[found val] isEqualToString:@"sdfsd"], @"Find works inside data snapshot");
found = [st findPath:[path childFromString:@"999i"]];
XCTAssertTrue([[found val] isEqualToNumber:@YES], @"Find works inside data snapshot");
found = [st findPath:[path childFromString:@"apples"]];
XCTAssertFalse([found isEmpty], @"Should find the node we set");
found = [st findPath:[path childFromString:@"apples/goats"]];
XCTAssertTrue([[found val] isEqualToNumber:@88], @"Find works inside data snapshot");
}
- (void) testWriteASnapshotInsideASnapshot {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
[st rememberData:[FSnapshotUtilities nodeFrom:@{@"a": @{@"b": @"v"}}] onPath:[[FPath alloc] initWith:@"t"]];
[st rememberData:[FSnapshotUtilities nodeFrom:@19] onPath:[[FPath alloc] initWith:@"t/a/rr"]];
id<FNode> found = [st findPath:[[FPath alloc] initWith:@"t/a/b"]];
XCTAssertTrue([[found val] isEqualToString:@"v"], @"Find inside snap");
found = [st findPath:[[FPath alloc] initWith:@"t/a/rr"]];
XCTAssertTrue([[found val] isEqualToNumber:@19], @"Find inside snap");
}
- (void) testWriteANullValueAndConfirmItIsRemembered {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
[st rememberData:[FSnapshotUtilities nodeFrom:[NSNull null]] onPath:[[FPath alloc] initWith:@"awq/fff"]];
id<FNode> found = [st findPath:[[FPath alloc] initWith:@"awq/fff"]];
XCTAssertTrue([found isEmpty], @"Empty node");
found = [st findPath:[[FPath alloc] initWith:@"awq/sdf"]];
XCTAssertTrue(found == nil, @"No node here");
found = [st findPath:[[FPath alloc] initWith:@"awq/fff/jjj"]];
XCTAssertTrue([found isEmpty], @"Empty node");
found = [st findPath:[[FPath alloc] initWith:@"awq/sdf/sdj/q"]];
XCTAssertTrue(found == nil, @"No node here");
}
- (void) testOverwriteWithNullAndConfirmItIsRemembered {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
[st rememberData:[FSnapshotUtilities nodeFrom:@{@"a": @{@"b": @"v"}}] onPath:[[FPath alloc] initWith:@"t"]];
id<FNode> found = [st findPath:[[FPath alloc] initWith:@"t"]];
XCTAssertFalse([found isEmpty], @"non-empty node");
[st rememberData:[FSnapshotUtilities nodeFrom:[NSNull null]] onPath:[[FPath alloc] initWith:@"t"]];
found = [st findPath:[[FPath alloc] initWith:@"t"]];
XCTAssertTrue([found isEmpty], @"Empty node");
}
- (void) testSimpleRememberAndForget {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
[st rememberData:[FSnapshotUtilities nodeFrom:@{@"a": @{@"b": @"v"}}] onPath:[[FPath alloc] initWith:@"t"]];
id<FNode> found = [st findPath:[[FPath alloc] initWith:@"t"]];
XCTAssertFalse([found isEmpty], @"non-empty node");
[st forgetPath:[[FPath alloc] initWith:@"t"]];
found = [st findPath:[[FPath alloc] initWith:@"t"]];
XCTAssertTrue(found == nil, @"node is gone");
}
- (void) testForgetTheRoot {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
[st rememberData:[FSnapshotUtilities nodeFrom:@{@"a": @{@"b": @"v"}}] onPath:[[FPath alloc] initWith:@"t"]];
id<FNode> found = [st findPath:[[FPath alloc] initWith:@"t"]];
XCTAssertFalse([found isEmpty], @"non-empty node");
found = [st findPath:[[FPath alloc] initWith:@""]];
XCTAssertTrue(found == nil, @"node is gone");
}
- (void) testForgetSnapshotInsideSnapshot {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
[st rememberData:[FSnapshotUtilities nodeFrom:@{@"a": @{@"b": @"v", @"c": @9, @"art": @NO}}] onPath:[[FPath alloc] initWith:@"t"]];
id<FNode> found = [st findPath:[[FPath alloc] initWith:@"t/a/c"]];
XCTAssertFalse([found isEmpty], @"non-empty node");
found = [st findPath:[[FPath alloc] initWith:@"t"]];
XCTAssertFalse([found isEmpty], @"non-empty node");
[st forgetPath:PATH(@"t/a/c")];
XCTAssertTrue([st findPath:PATH(@"t")] == nil, @"no more node here");
XCTAssertTrue([st findPath:PATH(@"t/a")] == nil, @"no more node here");
XCTAssertTrue([[[st findPath:PATH(@"t/a/b")] val] isEqualToString:@"v"], @"child still exists");
XCTAssertTrue([st findPath:PATH(@"t/a/c")] == nil, @"no more node here");
XCTAssertTrue([[[st findPath:PATH(@"t/a/art")] val] isEqualToNumber:@NO], @"child still exists");
}
- (void) testPathShallowerThanSnapshots {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
[st rememberData:NODE(@NO) onPath:PATH(@"t/x1")];
[st rememberData:NODE(@YES) onPath:PATH(@"t/x2")];
[st forgetPath:PATH(@"t")];
XCTAssertTrue([st findPath:PATH(@"t")] == nil, @"No more node here");
}
- (void) testIterateChildren {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
id<FNode> node = [FSnapshotUtilities nodeFrom:@{@"b": @"v", @"c": @9, @"art": @NO}];
[st rememberData:node onPath:PATH(@"t")];
[st rememberData:[FEmptyNode emptyNode] onPath:PATH(@"q")];
__block int num = 0;
__block BOOL gotT = NO;
__block BOOL gotQ = NO;
[st forEachChild:^(NSString* key, FSparseSnapshotTree* tree) {
num++;
if ([key isEqualToString:@"t"]) {
gotT = YES;
} else if ([key isEqualToString:@"q"]) {
gotQ = YES;
} else {
XCTFail(@"Unknown child");
}
}];
XCTAssertTrue(gotT, @"Saw t");
XCTAssertTrue(gotQ, @"Saw q");
XCTAssertTrue(num == 2, @"Saw two children");
}
- (void) testIterateTrees {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
__block int count = 0;
[st forEachTreeAtPath:PATH(@"") do:^(FPath *path, id<FNode> data) {
count++;
}];
XCTAssertTrue(count == 0, @"No trees to iterate through");
[st rememberData:NODE(@1) onPath:PATH(@"t")];
[st rememberData:NODE(@2) onPath:PATH(@"a/b")];
[st rememberData:NODE(@3) onPath:PATH(@"a/x/g")];
[st rememberData:NODE([NSNull null]) onPath:PATH(@"a/x/null")];
__block int num = 0;
__block BOOL got1 = NO;
__block BOOL got2 = NO;
__block BOOL got3 = NO;
__block BOOL gotNull = NO;
[st forEachTreeAtPath:PATH(@"q") do:^(FPath *path, id<FNode> data) {
num++;
NSString* pathString = [path description];
if ([pathString isEqualToString:@"/q/t"]) {
got1 = YES;
XCTAssertTrue([[data val] isEqualToNumber:@1], @"got 1");
} else if ([pathString isEqualToString:@"/q/a/b"]) {
got2 = YES;
XCTAssertTrue([[data val] isEqualToNumber:@2], @"got 2");
} else if ([pathString isEqualToString:@"/q/a/x/g"]) {
got3 = YES;
XCTAssertTrue([[data val] isEqualToNumber:@3], @"got 3");
} else if ([pathString isEqualToString:@"/q/a/x/null"]) {
gotNull = YES;
XCTAssertTrue([data val] == [NSNull null], @"got null");
} else {
XCTFail(@"unknown tree");
}
}];
XCTAssertTrue(got1 && got2 && got3 && gotNull, @"saw all the children");
XCTAssertTrue(num == 4, @"Saw the right number of children");
}
- (void) testSetLeafAndForgetDeeperPath {
FSparseSnapshotTree* st = [[FSparseSnapshotTree alloc] init];
[st rememberData:NODE(@"bar") onPath:PATH(@"foo")];
BOOL safeToRemove = [st forgetPath:PATH(@"foo/baz")];
XCTAssertFalse(safeToRemove, @"Should not have deleted anything, nothing to remove");
}
@end
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