Support for deep Map equality with asserts#equal (denoland/deno#3236

)
caspervonb · Oct 30, 2019 · 3975a5d · 3975a5d
1 parent c17fce4
commit 3975a5d
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Showing 2 changed files with 49 additions and 0 deletions.
diff --git a/testing/asserts.ts b/testing/asserts.ts
@@ -81,6 +81,19 @@ export function equal(c: unknown, d: unknown): boolean {
  }
  return true;
  }
+ if (a && b && a instanceof Map && b instanceof Map) {
+ if (a.size !== b.size) {
+ return false;
+ }
+
+ for (const [key, value] of a) {
+ if (!compare(value, b.get(key))) {
+ return false;
+ }
+ }
+
+ return true;
+ }
  // Have to render RegExp & Date for string comparison
  // unless it's mistreated as object
  if (

diff --git a/testing/asserts_test.ts b/testing/asserts_test.ts
@@ -47,6 +47,42 @@ test(function testingEqual(): void {
  assert(!equal(new Set([1, 2]), new Set([3, 2, 1])));
  assert(!equal(new Set([1, 2, 3]), new Set([4, 5, 6])));
  assert(equal(new Set("denosaurus"), new Set("denosaurussss")));
+ assert(equal(new Map(), new Map()));
+ assert(
+ equal(
+ new Map([["foo", "bar"], ["baz", "baz"]]),
+ new Map([["foo", "bar"], ["baz", "baz"]])
+ )
+ );
+ assert(
+ equal(
+ new Map([["foo", new Map([["bar", "baz"]])]]),
+ new Map([["foo", new Map([["bar", "baz"]])]])
+ )
+ );
+ assert(
+ equal(
+ new Map([["foo", { bar: "baz" }]]),
+ new Map([["foo", { bar: "baz" }]])
+ )
+ );
+ assert(
+ equal(
+ new Map([["foo", "bar"], ["baz", "qux"]]),
+ new Map([["baz", "qux"], ["foo", "bar"]])
+ )
+ );
+ assert(equal(new Map([["foo", ["bar"]]]), new Map([["foo", ["bar"]]])));
+ assert(!equal(new Map([["foo", "bar"]]), new Map([["bar", "baz"]])));
+ assert(
+ !equal(new Map([["foo", "bar"]]), new Map([["foo", "bar"], ["bar", "baz"]]))
+ );
+ assert(
+ !equal(
+ new Map([["foo", new Map([["bar", "baz"]])]]),
+ new Map([["foo", new Map([["bar", "qux"]])]])
+ )
+ );
 });
 
 test(function testingNotEquals(): void {