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214 lines (203 loc) · 7.33 KB
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var vows = require("vows"),
load = require("../load"),
assert = require("../assert");
var suite = vows.describe("d3.csv");
suite.addBatch({
"csv": {
topic: load("dsv/csv").expression("d3.csv").document(),
"on a sample file": {
topic: function(csv) {
csv("test/data/sample.csv", this.callback);
},
"invokes the callback with the parsed CSV": function(csv) {
assert.deepEqual(csv, [{"Hello":"42","World":"\"fish\""}]);
},
"overrides the mime type to text/csv": function(csv) {
assert.equal(XMLHttpRequest._last._info.mimeType, "text/csv");
}
},
"when specifying a row conversion function": {
topic: function(csv) {
csv("test/data/sample.csv", function(row) {
row.Hello = -row.Hello;
return row;
}, this.callback);
},
"invokes the callback with the parsed CSV": function(csv) {
assert.strictEqual(csv[0].Hello, -42);
}
},
"when loading a file that does not exist": {
topic: function(csv) {
var callback = this.callback;
csv("//does/not/exist.csv", function(error, csv) {
callback(null, csv);
});
},
"invokes the callback with undefined": function(csv) {
assert.isUndefined(csv);
}
},
"parse": {
topic: function(csv) {
return csv.parse;
},
"returns an array of objects": function(parse) {
assert.deepEqual(parse("a,b,c\n1,2,3\n"), [{a: "1", b: "2", c: "3"}]);
},
"does not strip whitespace": function(parse) {
assert.deepEqual(parse("a,b,c\n 1, 2,3\n"), [{a: " 1", b: " 2", c: "3"}]);
},
"parses quoted values": function(parse) {
assert.deepEqual(parse("a,b,c\n\"1\",2,3"), [{a: "1", b: "2", c: "3"}]);
assert.deepEqual(parse("a,b,c\n\"1\",2,3\n"), [{a: "1", b: "2", c: "3"}]);
},
"parses quoted values with quotes": function(parse) {
assert.deepEqual(parse("a\n\"\"\"hello\"\"\""), [{a: "\"hello\""}]);
},
"parses quoted values with newlines": function(parse) {
assert.deepEqual(parse("a\n\"new\nline\""), [{a: "new\nline"}]);
assert.deepEqual(parse("a\n\"new\rline\""), [{a: "new\rline"}]);
assert.deepEqual(parse("a\n\"new\r\nline\""), [{a: "new\r\nline"}]);
},
"parses unix newlines": function(parse) {
assert.deepEqual(parse("a,b,c\n1,2,3\n4,5,\"6\"\n7,8,9"), [
{a: "1", b: "2", c: "3"},
{a: "4", b: "5", c: "6"},
{a: "7", b: "8", c: "9"}
]);
},
"parses mac newlines": function(parse) {
assert.deepEqual(parse("a,b,c\r1,2,3\r4,5,\"6\"\r7,8,9"), [
{a: "1", b: "2", c: "3"},
{a: "4", b: "5", c: "6"},
{a: "7", b: "8", c: "9"}
]);
},
"parses dos newlines": function(parse) {
assert.deepEqual(parse("a,b,c\r\n1,2,3\r\n4,5,\"6\"\r\n7,8,9"), [
{a: "1", b: "2", c: "3"},
{a: "4", b: "5", c: "6"},
{a: "7", b: "8", c: "9"}
]);
}
},
"parse with row function": {
"invokes the row function for every row in order": function(csv) {
var rows = [];
csv.parse("a\n1\n2\n3\n4", function(d, i) { rows.push({d: d, i: i}); });
assert.deepEqual(rows, [
{d: {a: "1"}, i: 0},
{d: {a: "2"}, i: 1},
{d: {a: "3"}, i: 2},
{d: {a: "4"}, i: 3}
]);
},
"returns an array of the row function return values": function(csv) {
assert.deepEqual(csv.parse("a,b,c\n1,2,3\n", function(row) { return row; }), [{a: "1", b: "2", c: "3"}]);
},
"skips rows if the row function returns null or undefined": function(csv) {
assert.deepEqual(csv.parse("a,b,c\n1,2,3\n2,3,4", function(row) { return row.a & 1 ? null : row; }), [{a: "2", b: "3", c: "4"}]);
assert.deepEqual(csv.parse("a,b,c\n1,2,3\n2,3,4", function(row) { return row.a & 1 ? undefined : row; }), [{a: "2", b: "3", c: "4"}]);
}
},
"parseRows": {
topic: function(csv) {
return csv.parseRows;
},
"returns an array of arrays": function(parse) {
assert.deepEqual(parse("a,b,c\n"), [["a", "b", "c"]]);
},
"parses quoted values": function(parse) {
assert.deepEqual(parse("\"1\",2,3\n"), [["1", "2", "3"]]);
assert.deepEqual(parse("\"hello\""), [["hello"]]);
},
"parses quoted values with quotes": function(parse) {
assert.deepEqual(parse("\"\"\"hello\"\"\""), [["\"hello\""]]);
},
"parses quoted values with newlines": function(parse) {
assert.deepEqual(parse("\"new\nline\""), [["new\nline"]]);
assert.deepEqual(parse("\"new\rline\""), [["new\rline"]]);
assert.deepEqual(parse("\"new\r\nline\""), [["new\r\nline"]]);
},
"parses unix newlines": function(parse) {
assert.deepEqual(parse("a,b,c\n1,2,3\n4,5,\"6\"\n7,8,9"), [
["a", "b", "c"],
["1", "2", "3"],
["4", "5", "6"],
["7", "8", "9"]
]);
},
"parses mac newlines": function(parse) {
assert.deepEqual(parse("a,b,c\r1,2,3\r4,5,\"6\"\r7,8,9"), [
["a", "b", "c"],
["1", "2", "3"],
["4", "5", "6"],
["7", "8", "9"]
]);
},
"parses dos newlines": function(parse) {
assert.deepEqual(parse("a,b,c\r\n1,2,3\r\n4,5,\"6\"\r\n7,8,9"), [
["a", "b", "c"],
["1", "2", "3"],
["4", "5", "6"],
["7", "8", "9"]
]);
}
},
"format": {
topic: function(csv) {
return csv.format;
},
"takes an array of objects as input": function(format) {
assert.equal(format([{a: 1, b: 2, c: 3}]), "a,b,c\n1,2,3");
},
"escapes field names containing special characters": function(format) {
assert.equal(format([{"foo,bar": true}]), "\"foo,bar\"\ntrue");
},
"computes the union of all fields": function(format) {
assert.equal(format([
{a: 1},
{a: 1, b: 2},
{a: 1, b: 2, c: 3},
{b: 1, c: 2},
{c: 1}
]), "a,b,c\n1,,\n1,2,\n1,2,3\n,1,2\n,,1");
},
"orders field by first-seen": function(format) {
assert.equal(format([
{a: 1, b: 2},
{c: 3, b: 4},
{c: 5, a: 1, b: 2}
]), "a,b,c\n1,2,\n,4,3\n1,2,5");
}
},
"formatRows": {
topic: function(csv) {
return csv.formatRows;
},
"takes an array of arrays as input": function(format) {
assert.equal(format([["a", "b", "c"], ["1", "2", "3"]]), "a,b,c\n1,2,3");
},
"separates lines using unix newline": function(format) {
assert.equal(format([[], []]), "\n");
},
"does not strip whitespace": function(format) {
assert.equal(format([["a ", " b", "c"], ["1", "2", "3 "]]), "a , b,c\n1,2,3 ");
},
"does not quote simple values": function(format) {
assert.equal(format([["a"], [1]]), "a\n1");
},
"escapes double quotes": function(format) {
assert.equal(format([["\"fish\""]]), "\"\"\"fish\"\"\"");
},
"escapes unix newlines": function(format) {
assert.equal(format([["new\nline"]]), "\"new\nline\"");
},
"escapes commas": function(format) {
assert.equal(format([["oxford,comma"]]), "\"oxford,comma\"");
}
}
}
});
suite.export(module);