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CDRFunctions.m
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CDRFunctions.m
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#import <Foundation/Foundation.h>
#import <objc/runtime.h>
#import "CDRSpec.h"
#import "CDRExampleGroup.h"
#import "CDRExampleReporter.h"
#import "CDRDefaultReporter.h"
#import "SpecHelper.h"
#import "CDRFunctions.h"
#pragma mark - Helpers
BOOL CDRClassIsOfType(Class class, const char * const className) {
Protocol * protocol = NSProtocolFromString([NSString stringWithCString:className encoding:NSUTF8StringEncoding]);
if (strcmp(className, class_getName(class))) {
while (class) {
if (class_conformsToProtocol(class, protocol)) {
return YES;
}
class = class_getSuperclass(class);
}
}
return NO;
}
NSArray *CDRSelectClasses(BOOL (^classSelectionPredicate)(Class class)) {
unsigned int numberOfClasses = objc_getClassList(NULL, 0);
Class classes[numberOfClasses];
numberOfClasses = objc_getClassList(classes, numberOfClasses);
NSMutableArray *selectedClasses = [NSMutableArray array];
for (unsigned int i = 0; i < numberOfClasses; ++i) {
Class class = classes[i];
if (classSelectionPredicate(class)) {
[selectedClasses addObject:class];
}
}
return selectedClasses;
}
#pragma mark - Globals
void CDRDefineSharedExampleGroups() {
NSArray *sharedExampleGroupPoolClasses = CDRSelectClasses(^(Class class) {
return CDRClassIsOfType(class, "CDRSharedExampleGroupPool");
});
for (Class class in sharedExampleGroupPoolClasses) {
CDRSharedExampleGroupPool *sharedExampleGroupPool = [[class alloc] init];
[sharedExampleGroupPool declareSharedExampleGroups];
[sharedExampleGroupPool release];
}
}
BOOL CDRClassHasClassMethod(Class class, SEL selector) {
if (strcmp("UIAccessibilitySafeCategory__NSObject", class_getName(class))) {
return !!class_getClassMethod(class, selector);
}
return NO;
}
void CDRDefineGlobalBeforeAndAfterEachBlocks() {
[SpecHelper specHelper].globalBeforeEachClasses = CDRSelectClasses(^BOOL(Class class) {
return CDRClassHasClassMethod(class, @selector(beforeEach));
});
[SpecHelper specHelper].globalAfterEachClasses = CDRSelectClasses(^BOOL(Class class) {
return CDRClassHasClassMethod(class, @selector(afterEach));
});
}
#pragma mark - Reporters
NSArray *CDRReporterClassesFromEnv(const char *defaultReporterClassName) {
const char *reporterClassNamesCsv = getenv("CEDAR_REPORTER_CLASS");
if (!reporterClassNamesCsv) {
reporterClassNamesCsv = defaultReporterClassName;
}
NSString *objCClassNames = [NSString stringWithUTF8String:reporterClassNamesCsv];
NSArray *reporterClassNames = [objCClassNames componentsSeparatedByString:@","];
NSMutableArray *reporterClasses = [NSMutableArray arrayWithCapacity:[reporterClassNames count]];
for (NSString *reporterClassName in reporterClassNames) {
Class reporterClass = NSClassFromString(reporterClassName);
if (!reporterClass) {
printf("***** The specified reporter class \"%s\" does not exist. *****\n", [reporterClassName cStringUsingEncoding:NSUTF8StringEncoding]);
return nil;
}
[reporterClasses addObject:reporterClass];
}
return reporterClasses;
}
NSArray *CDRReportersFromEnv(const char *defaultReporterClassName) {
NSArray *reporterClasses = CDRReporterClassesFromEnv(defaultReporterClassName);
NSMutableArray *reporters = [NSMutableArray arrayWithCapacity:reporterClasses.count];
for (Class reporterClass in reporterClasses) {
[reporters addObject:[[[reporterClass alloc] init] autorelease]];
}
return reporters;
}
#pragma mark - Spec running
NSArray *CDRSpecClassesToRun() {
char *envSpecClassNames = getenv("CEDAR_SPEC_CLASSES");
if (envSpecClassNames) {
NSArray *specClassNames =
[[NSString stringWithUTF8String:envSpecClassNames]
componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
NSMutableArray *specClassesToRun = [NSMutableArray arrayWithCapacity:specClassNames.count];
for (NSString *className in specClassNames) {
Class specClass = NSClassFromString(className);
if (specClass) {
[specClassesToRun addObject:specClass];
}
}
return [[specClassesToRun copy] autorelease];
}
return CDRSelectClasses(^(Class class) {
return CDRClassIsOfType(class, "CDRSpec");
});
}
NSArray *CDRSpecsFromSpecClasses(NSArray *specClasses) {
NSMutableArray *specs = [NSMutableArray arrayWithCapacity:specClasses.count];
for (Class class in specClasses) {
CDRSpec *spec = [[[class alloc] init] autorelease];
[spec defineBehaviors];
[specs addObject:spec];
}
return specs;
}
void CDRMarkFocusedExamplesInSpecs(NSArray *specs) {
char *envSpecFile = getenv("CEDAR_SPEC_FILE");
if (envSpecFile) {
NSArray *components = [[NSString stringWithUTF8String:envSpecFile] componentsSeparatedByString:@":"];
for (CDRSpec *spec in specs) {
if ([spec.fileName isEqualToString:[components objectAtIndex:0]]) {
[spec markAsFocusedClosestToLineNumber:[[components objectAtIndex:1] intValue]];
}
}
}
for (CDRSpec *spec in specs) {
SpecHelper.specHelper.shouldOnlyRunFocused |= spec.rootGroup.hasFocusedExamples;
}
}
NSArray *CDRRootGroupsFromSpecs(NSArray *specs) {
NSMutableArray *groups = [NSMutableArray arrayWithCapacity:specs.count];
for (CDRSpec *spec in specs) {
[groups addObject:spec.rootGroup];
}
return groups;
}
NSArray *CDRPermuteSpecClassesWithSeed(NSArray *unsortedSpecClasses, unsigned int seed) {
srand(seed);
NSArray *sortedSpecClasses = [unsortedSpecClasses sortedArrayWithOptions:0 usingComparator:^NSComparisonResult(Class class1, Class class2) {
return [NSStringFromClass(class1) compare:NSStringFromClass(class2)];
}];
NSMutableArray *permutedSpecClasses = [sortedSpecClasses mutableCopy];
for (int i = 0 ; i < sortedSpecClasses.count ; i++) {
[permutedSpecClasses exchangeObjectAtIndex:i
withObjectAtIndex:rand() % sortedSpecClasses.count];
}
return permutedSpecClasses;
}
unsigned int CDRGetRandomSeed() {
unsigned int seed = time(NULL) % 100000 + 2;
if (getenv("CEDAR_RANDOM_SEED")) {
seed = [[NSString stringWithUTF8String:getenv("CEDAR_RANDOM_SEED")] intValue];
}
return seed;
}
int runSpecsWithCustomExampleReporters(NSArray *reporters) {
@autoreleasepool {
CDRDefineSharedExampleGroups();
CDRDefineGlobalBeforeAndAfterEachBlocks();
NSArray *specClasses = CDRSpecClassesToRun();
unsigned int seed = CDRGetRandomSeed();
NSArray *permutedSpecClasses = CDRPermuteSpecClassesWithSeed(specClasses, seed);
NSArray *specs = CDRSpecsFromSpecClasses(permutedSpecClasses);
CDRMarkFocusedExamplesInSpecs(specs);
NSArray *groups = CDRRootGroupsFromSpecs(specs);
for (id<CDRExampleReporter> reporter in reporters) {
[reporter runWillStartWithGroups:groups andRandomSeed:seed];
}
[groups makeObjectsPerformSelector:@selector(run)];
int result = 0;
for (id<CDRExampleReporter> reporter in reporters) {
[reporter runDidComplete];
result |= [reporter result];
}
return result;
}
}
int runSpecs() {
@autoreleasepool {
NSArray *reporters = CDRReportersFromEnv("CDRDefaultReporter");
if (![reporters count]) {
@throw @"No reporters? WTF?";
}
return runSpecsWithCustomExampleReporters(reporters);
}
}
int runAllSpecs() {
return runSpecs();
}