# wch/r-source

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 ###---- ALL tests here should return TRUE ! ### ###---- "Real" Arithmetic; Numerics etc --> ./arith-true.R ### mode checking, etc. is.recursive(expression(1+3, 2/sqrt(pi)))# fix PR#9 ## sum(): all(1:12 == cumsum(rep(1,12))) x <- rnorm(127); sx <- sum(x); abs((sum(rev(x)) -sx)) < 1e-12 * abs(sx) ## seq(): typeof(1:4) == "integer" #-- fails for 0.2, 0.3,.., 0.9 ## Check parsing with L suffix for integer literals. typeof(1L) == "integer" typeof(1000L) == "integer" typeof(1e3L) == "integer" typeof(1e-3L) == "double" # gives warning 1.L # gives warning try(parse(text = "12iL")) # gives syntax error all((0:6) == pi + ((-pi):pi)) all((0:7) == (pi+seq(-pi,pi, length=8))*7/(2*pi)) 1 == as.integer(is.na(c(pi,NA)[2])) 1 == as.integer(is.nan(0/0)) ## rev(): cc <- c(1:10,10:1) ; all(cc == rev(cc)) ## dim[names](): all(names(c(a=pi, b=1, d=1:4)) == c("a","b", paste("d", 1:4, sep=""))) ##P names(c(a=pi, b=1, d=1:4)) ncb <- dimnames(cbind(a=1, yy=1:3))[[2]] (!is.null(ncb)) && all(ncb == c("a","yy")) all(cbind(a=1:2, b=1:3, c=1:6) == t(rbind(a=1:2, b=1:3, c=1:6))) ##P rbind(a=1:2, b=1:3, c=1:6) all(dim(cbind(cbind(I=1,x=1:4), c(a=pi))) == 4:3)# fails in S+ a <- b <- 1:3 all(dimnames(cbind(a, b))[[2]] == c("a","b")) ## rbind PR#338 all(dim(m <- rbind(1:2, diag(2))) == 3:2) all(m == c(1,1,0, 2,0,1)) ## factor(): is.factor(factor(integer())) all(levels(ordered(rev(gl(3,4)))) == 1:3)# coercion to char all(levels(factor(factor(9:1)[3:5])) == 5:7) ## crossing bug PR#40 is.factor(ff <- gl(2,3) : gl(3,2)) && length(ff) == 6 all(levels(ff) == t(outer(1:2, 1:3, paste, sep=":"))) ## from PR#5 ll <- c("A","B"); ff <- factor(ll); f0 <- ff[, drop=TRUE] all(f0 == ff) && all(levels(ff) == ll) && is.factor(ff) && is.factor(f0) ### data.frame s : ## from lists [bug PR#100] x <- NULL x\$x1 <- 1:10 x\$x2 <- 0:9 all(dim(dx <- as.data.frame(x)) == c(10,2)) ## Logicals: (S is wrong) l1 <- c(TRUE,FALSE,TRUE) (! as.logical(as.data.frame(FALSE)[,1])) all(l1 == as.logical(as.data.frame(l1)[,1])) ## empty data.frames : x <- data.frame(a=1:3) x30 <- { if(is.R()) x[, -1]# not even possible in S+ else structure(list(), row.names = paste(1:3), class = "data.frame") } all(dim(x30) == c(3,0)) x01 <- x[-(1:3), , drop = FALSE] x00 <- x01[,-1] all(dim(x01) == 0:1) all(dim(x00) == 0) all(dim(x) == dim(rbind(x, x01))) ## bugs up to 1.2.3 : all(dim(x30) == dim(m30 <- as.matrix(x30))) all(dim(x01) == dim(m01 <- as.matrix(x01))) all(dim(x30) == dim(as.data.frame(m30))) all(dim(x01) == dim(as.data.frame(m01))) all(dim(x01) == dim( data.frame(m01))) all(dim(x30) == dim( data.frame(m30))) all(dim(x) == dim(cbind(x, x30))) ## up to 1.4.0 : all(dim(x30) == dim( data.matrix(x30))) all(dim(x00) == dim( data.matrix(x00))) m0 <- matrix(pi, 0,3) a302 <- array("", dim=c(3,0,2)) identical(apply(m0, 1, dim), NULL) identical(apply(m0, 2, dim), NULL) identical(apply(m0, 1,length), integer(0)) identical(apply(m0, 2,length), integer(3)) identical(apply(a302, 1, mode), rep("character",3)) ## NO (maybe later?): ## identical(apply(a302, 2, mode), rep("character",0)) is.character(aa <- apply(a302, 2, mode)) && length(aa) == 0 identical(apply(a302, 3, mode), rep("character",2)) identical(apply(a302, 3, length),integer(2)) identical(apply(a302, 3, dim), matrix(as.integer(c(3,0)), 2 ,2)) identical(apply(a302, 1, dim), matrix(as.integer(c(0,2)), 2 ,3)) identical(apply(array(dim=3), 1,length), rep(1:1, 3)) identical(apply(array(dim=0), 1,length), rep(1:1, 0))# = integer(0) ### Subsetting ## bug PR#425 x <- matrix(1:4, 2, 2, dimnames=list(c("abc","ab"), c("cde","cd"))) y <- as.data.frame(x) all(x["ab",] == c(2,4)) all(y["ab",] == c(2,4)) ## from bug PR#447 x <- 1:2 ; x[c("2","2")] <- 4 all.equal(x, c(1:2, "2" = 4)) ## stretching l2 <- list(a=1, b=2) l2["cc"] <- pi l2[["d"]] <- 4 l2 \$ e <- 55 all.equal(l2, list(a = 1, b = 2, cc = pi, d = 4, e = 55), tolerance = 0) all.equal(l2["d"], list(d = 4)) l2\$d == 4 && l2\$d == l2[["d"]] ## bug in R <= 1.1 f1 <- y1 ~ x1 f2 <- y2 ~ x2 f2[2] <- f1[2] deparse(f2) == "y1 ~ x2" m <- cbind(a=1:2,b=c(R=10,S=11)) all(sapply(dimnames(m), length) == c(2,2)) ## [[ for matrix: m[[1,2]] == m[[3]] && m[[3]] == m[3] && m[3] == m[1,2] ## bug in R <= 1.1.1 : unclass(*) didn't drop the class! ## to be robust to S4 methods DON'T test for null class ## The test for attr(,"class") is valid, if essentially useless d1 <- rbind(data.frame(a=1, b = I(TRUE)), new = c(7, "N")) is.null(attr(unclass(d1\$b), "class")) ## bugs in R 1.2.0 format(as.POSIXct(relR120 <- "2000-12-15 11:24:40")) == relR120 format(as.POSIXct(substr(relR120,1,10))) == substr(relR120,1,10) ## rank() with NAs (and ties) x <- c(3:1,6,4,3,NA,5,0,NA) rx <- rank(x) all(rx == c(4.5, 3:2, 8, 6, 4.5, 9, 7, 1, 10)) rxK <- rank(x, na.last = "keep") all(rx [rx <= 8] == na.omit(rxK)) all(rank(x, na.last = NA) == na.omit(rxK)) ## as.list.function() instead of *.default(): identical(as.list(as.list), alist(x = , ... = , UseMethod("as.list")))