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fix(std/testing): Provide message and diff for assertStrictEq (#5417)

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closes #5416
This commit is contained in:
Stéphane Klein 2020-05-15 15:49:11 +02:00 • committed by GitHub
parent 06f3268f3a
commit 62a7fcbdc4
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2 changed files with 100 additions and 20 deletions
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66
std/testing/asserts_test.ts
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@ -7,6 +7,7 @@ import {
assertArrayContains,
assertMatch,
assertEquals,
assertStrictEq,
assertThrows,
AssertionError,
equal,
@ -278,7 +279,13 @@ test({
assertThrows(
(): void => assertEquals(1, 2),
AssertionError,
[...createHeader(), removed(`- 1`), added(`+ 2`), ""].join("\n")
[
"Values are not equal:",
...createHeader(),
removed(`- 1`),
added(`+ 2`),
"",
].join("\n")
);
},
});
@ -289,7 +296,12 @@ test({
assertThrows(
(): void => assertEquals(1, "1"),
AssertionError,
[...createHeader(), removed(`- 1`), added(`+ "1"`)].join("\n")
[
"Values are not equal:",
...createHeader(),
removed(`- 1`),
added(`+ "1"`),
].join("\n")
);
},
});
@ -301,6 +313,7 @@ test({
(): void => assertEquals([1, "2", 3], ["1", "2", 3]),
AssertionError,
[
"Values are not equal:",
...createHeader(),
removed(`- [ 1, "2", 3 ]`),
added(`+ [ "1", "2", 3 ]`),
@ -317,6 +330,7 @@ test({
(): void => assertEquals({ a: 1, b: "2", c: 3 }, { a: 1, b: 2, c: [3] }),
AssertionError,
[
"Values are not equal:",
...createHeader(),
removed(`- { a: 1, b: "2", c: 3 }`),
added(`+ { a: 1, b: 2, c: [ 3 ] }`),
@ -325,3 +339,51 @@ test({
);
},
});
test({
name: "strict pass case",
fn(): void {
assertStrictEq(true, true);
assertStrictEq(10, 10);
assertStrictEq("abc", "abc");
const xs = [1, false, "foo"];
const ys = xs;
assertStrictEq(xs, ys);
const x = { a: 1 };
const y = x;
assertStrictEq(x, y);
},
});
test({
name: "strict failed with structure diff",
fn(): void {
assertThrows(
(): void => assertStrictEq({ a: 1, b: 2 }, { a: 1, c: [3] }),
AssertionError,
[
"Values are not strictly equal:",
...createHeader(),
removed("- { a: 1, b: 2 }"),
added("+ { a: 1, c: [ 3 ] }"),
"",
].join("\n")
);
},
});
test({
name: "strict failed with reference diff",
fn(): void {
assertThrows(
(): void => assertStrictEq({ a: 1, b: 2 }, { a: 1, b: 2 }),
AssertionError,
[
"Values have the same structure but are not reference-equal:\n",
red(" { a: 1, b: 2 }"),
].join("\n")
);
},
});