Comments (4)
Actually I missed a cool part of rollup. Since I didn't refer to the imported source code it was removed ending up in a test without implementation. Once I referenced the source in a test it gets pulled in.
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Glad you were able to resolve your own issue :) 👍
from karma-rollup-preprocessor.
@thepian Hi, I seem to be getting the same issue as you. Karma is finishing with no output, however even if I reference the imported code it still does not work. I suspect it has something to do with the es2015 class syntax, as removing classes allows karma to run.
Here is a small example that reproduces my issue
// test/foo_test.js
import Foo from "../src/foo";
describe("foo", () => {
it("bar", () => {
assert.equal(new Foo().bar(), "baz");
});
});
// src/foo.js
export default class Foo {
bar() {
return "baz";
}
}
// karma.conf.js
module.exports = function(config) {
config.set({
basePath: "",
frameworks: ["mocha", "chai"],
files: [
"test/**/*_test.js"
],
preprocessors: {
"test/**/*_test.js": ["rollup"]
},
exclude: [],
rollupPreprocessor: {
rollup: {
plugins: [
require("rollup-plugin-node-resolve")(),
require("rollup-plugin-commonjs")({
exclude: ["src/**", "test/**/*.js"]
}),
require("rollup-plugin-babel")({
exclude: "node_modules/**",
presets: [require("babel-preset-es2015-rollup")],
babelrc: false
})
]
},
bundle: {
sourceMap: "inline"
}
},
reporters: ["progress"],
port: 9876,
colors: true,
logLevel: config.LOG_INFO,
autoWatch: false,
browsers: ["Chrome"],
singleRun: true,
concurrency: Infinity
});
};
from karma-rollup-preprocessor.
I noticed an invalid configuration (specifically an invalid moduleName
) was causing the Karma to fail silently. I believe this would have been resolved by a try/catch around bundle.generate()
, but in my recent testing with the latest version of Rollup — this no longer seems necessary.
Also @jellymann, I know I'm late to the party but the error you describe is surely related to this one... seems to have been an issue with the specific combination of plug-ins you listed:
rollup-plugin-node-resolve
rollup-plugin-commonjs
rollup-plugin-babel
For what it's worth, I've had terrible luck combining Babel with Rollup... particularly in earlier versions of Node (where I suppose various ES2015 features aren't supported.)
Related #4
from karma-rollup-preprocessor.
Related Issues (20)
- Rollup has moved output options within the config
- sourcemaps not working HOT 4
- Add support of array configs HOT 4
- Source Maps not Working HOT 1
- Watching doesn't start when debugging HOT 4
- Not compatible with the latest version of Rollup (v1.0.0) HOT 2
- TypeError: Cannot read property 'forEach' of undefined HOT 4
- dynamic imports give a 404 HOT 4
- dependencies are duplicated for each test file HOT 19
- Issues using babel-typescript and @types packages HOT 3
- Watching fails to process files HOT 6
- Missing options in examples HOT 2
- Warnings when used with Rollup >= 1.27.0
- There are hints when using plug-ins that introduce files HOT 1
- @rollup/plugin-multi-entry broken by #54 HOT 6
- Watch not working on windows HOT 9
- #69 breaks configs with output.file HOT 1
- Watcher not working using TypeScript? HOT 13
- Watch mode overwrites the test file HOT 9
- New version containing fix for watch mode HOT 1
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