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Add skip first n lines capability to csv node (#1535)

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* Initial implementation of skip first lines for css node

* add css skip lines tests
This commit is contained in:
Dave Conway-Jones
2018-01-11 22:02:58 +00:00
committed by Nick O'Leary
parent 161c7d30ca
commit 7c0b9ffe06
3 changed files with 141 additions and 20 deletions
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88
test/nodes/core/parsers/70-CSV_spec.js
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@@ -265,6 +265,94 @@ describe('CSV node', function() {
});
});
it('should skip several lines from start if requested', function(done) {
var flow = [ { id:"n1", type:"csv", temp:"a,b,c,d", skip: 2, wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(csvNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
n2.on("input", function(msg) {
msg.should.have.property('payload', { a: 9, b: 0, c: "A", d: "B" });
check_parts(msg, 0, 1);
done();
});
var testString = "1,2,3,4"+String.fromCharCode(10)+"5,6,7,8"+String.fromCharCode(10)+"9,0,A,B"+String.fromCharCode(10);
n1.emit("input", {payload:testString});
});
});
it('should skip several lines from start then use next line as a tempate', function(done) {
var flow = [ { id:"n1", type:"csv", temp:"a,b,c,d", hdrin:true, skip: 2, wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(csvNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
n2.on("input", function(msg) {
msg.should.have.property('payload', { "9": "C", "0": "D", "A": "E", "B": "F" });
check_parts(msg, 0, 1);
done();
});
var testString = "1,2,3,4"+String.fromCharCode(10)+"5,6,7,8"+String.fromCharCode(10)+"9,0,A,B"+String.fromCharCode(10)+"C,D,E,F"+String.fromCharCode(10);
n1.emit("input", {payload:testString});
});
});
it('should skip several lines from start and correct parts', function(done) {
var flow = [ { id:"n1", type:"csv", temp:"a,b,c,d", skip: 2, wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(csvNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var c = 0;
n2.on("input", function(msg) {
if (c===0) {
msg.should.have.property('payload', { a: 9, b: 0, c: "A", d: "B" });
check_parts(msg, 0, 2);
c = c+1;
}
else {
msg.should.have.property('payload', { a: "C", b: "D", c: "E", d: "F" });
check_parts(msg, 1, 2);
done();
}
});
var testString = "1,2,3,4"+String.fromCharCode(10)+"5,6,7,8"+String.fromCharCode(10)+"9,0,A,B"+String.fromCharCode(10)+"C,D,E,F"+String.fromCharCode(10);
n1.emit("input", {payload:testString});
});
});
it('should be able to skip and then use the first of multiple parts as a template if parts are present', function(done) {
var flow = [ { id:"n1", type:"csv", temp:"", hdrin:true, skip:2, wires:[["n2"]] },
{id:"n2", type:"helper"} ];
helper.load(csvNode, flow, function() {
var n1 = helper.getNode("n1");
var n2 = helper.getNode("n2");
var c = 0;
n2.on("input", function(msg) {
if (c === 0) {
msg.should.have.property('payload', { w: 1, x: 2, y: 3, z: 4 });
check_parts(msg, 0, 2);
c += 1;
}
else {
msg.should.have.property('payload', { w: 5, x: 6, y: 7, z: 8 });
check_parts(msg, 1, 2);
done();
}
});
var testStringA = "foo\n";
var testStringB = "bar\n";
var testString1 = "w,x,y,z\n";
var testString2 = "1,2,3,4\n";
var testString3 = "5,6,7,8\n";
n1.emit("input", {payload:testStringA, parts:{id:"X", index:0, count:5}});
n1.emit("input", {payload:testStringB, parts:{id:"X", index:1, count:5}});
n1.emit("input", {payload:testString1, parts:{id:"X", index:2, count:5}});
n1.emit("input", {payload:testString2, parts:{id:"X", index:3, count:5}});
n1.emit("input", {payload:testString3, parts:{id:"X", index:4, count:5}});
});
});
});
describe('json object to csv', function() {