/
diff_test.ts
111 lines (101 loc) · 2.49 KB
/
diff_test.ts
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import diff from "./diff.ts";
import { assertEquals } from "../testing/asserts.ts";
const { test } = Deno;
test({
name: "empty",
fn(): void {
assertEquals(diff([], []), []);
},
});
test({
name: '"a" vs "b"',
fn(): void {
assertEquals(diff(["a"], ["b"]), [
{ type: "removed", value: "a" },
{ type: "added", value: "b" },
]);
},
});
test({
name: '"a" vs "a"',
fn(): void {
assertEquals(diff(["a"], ["a"]), [{ type: "common", value: "a" }]);
},
});
test({
name: '"a" vs ""',
fn(): void {
assertEquals(diff(["a"], []), [{ type: "removed", value: "a" }]);
},
});
test({
name: '"" vs "a"',
fn(): void {
assertEquals(diff([], ["a"]), [{ type: "added", value: "a" }]);
},
});
test({
name: '"a" vs "a, b"',
fn(): void {
assertEquals(diff(["a"], ["a", "b"]), [
{ type: "common", value: "a" },
{ type: "added", value: "b" },
]);
},
});
test({
name: '"strength" vs "string"',
fn(): void {
assertEquals(diff(Array.from("strength"), Array.from("string")), [
{ type: "common", value: "s" },
{ type: "common", value: "t" },
{ type: "common", value: "r" },
{ type: "removed", value: "e" },
{ type: "added", value: "i" },
{ type: "common", value: "n" },
{ type: "common", value: "g" },
{ type: "removed", value: "t" },
{ type: "removed", value: "h" },
]);
},
});
test({
name: '"strength" vs ""',
fn(): void {
assertEquals(diff(Array.from("strength"), Array.from("")), [
{ type: "removed", value: "s" },
{ type: "removed", value: "t" },
{ type: "removed", value: "r" },
{ type: "removed", value: "e" },
{ type: "removed", value: "n" },
{ type: "removed", value: "g" },
{ type: "removed", value: "t" },
{ type: "removed", value: "h" },
]);
},
});
test({
name: '"" vs "strength"',
fn(): void {
assertEquals(diff(Array.from(""), Array.from("strength")), [
{ type: "added", value: "s" },
{ type: "added", value: "t" },
{ type: "added", value: "r" },
{ type: "added", value: "e" },
{ type: "added", value: "n" },
{ type: "added", value: "g" },
{ type: "added", value: "t" },
{ type: "added", value: "h" },
]);
},
});
test({
name: '"abc", "c" vs "abc", "bcd", "c"',
fn(): void {
assertEquals(diff(["abc", "c"], ["abc", "bcd", "c"]), [
{ type: "common", value: "abc" },
{ type: "added", value: "bcd" },
{ type: "common", value: "c" },
]);
},
});