fix(cli/coverage): display mapped instrumentation line counts (#9310)

10 files changed, 82 insertions, 18 deletions

diff --git a/cli/tests/integration_tests.rs b/cli/tests/integration_tests.rs
index eab49a3c4..7eae47859 100644
--- a/cli/tests/integration_tests.rs
+++ b/cli/tests/integration_tests.rs
@@ -3478,6 +3478,12 @@ itest!(deno_test_coverage {
   exit_code: 0,
 });
 
+itest!(deno_test_complex_coverage {
+  args: "test --coverage --unstable test_complex_coverage.ts",
+  output: "test_complex_coverage.out",
+  exit_code: 0,
+});
+
 itest!(deno_test_comment_coverage {
   args: "test --coverage --unstable test_comment_coverage.ts",
   output: "test_comment_coverage.out",
diff --git a/cli/tests/subdir/complex.ts b/cli/tests/subdir/complex.ts
new file mode 100644
index 000000000..588e6ce59
--- /dev/null
+++ b/cli/tests/subdir/complex.ts
@@ -0,0 +1,35 @@
+// This entire interface should be completely ignored by the coverage tool.
+export interface Complex {
+  // These are comments.
+  foo: string;
+
+  // But this is a stub, so this isn't really documentation.
+  bar: string;
+
+  // Really all these are doing is padding the line count.
+  baz: string;
+}
+
+export function complex(
+  foo: string,
+  bar: string,
+  baz: string,
+): Complex {
+  return {
+    foo,
+    bar,
+    baz,
+  };
+}
+
+export function unused(
+  foo: string,
+  bar: string,
+  baz: string,
+): Complex {
+  return complex(
+    foo,
+    bar,
+    baz,
+  );
+}
diff --git a/cli/tests/test_branch_coverage.out b/cli/tests/test_branch_coverage.out
index e52c4bac0..375073e36 100644
--- a/cli/tests/test_branch_coverage.out
+++ b/cli/tests/test_branch_coverage.out
@@ -4,7 +4,7 @@ test branch ... ok ([WILDCARD])
 
 test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out ([WILDCARD])
 
-cover [WILDCARD]/tests/subdir/branch.ts ... 66.667% (6/9)
+cover [WILDCARD]/tests/subdir/branch.ts ... 57.143% (4/7)
    4 |   } else {
    5 |     return false;
    6 |   }
diff --git a/cli/tests/test_comment_coverage.out b/cli/tests/test_comment_coverage.out
index 582152fa1..ce846836c 100644
--- a/cli/tests/test_comment_coverage.out
+++ b/cli/tests/test_comment_coverage.out
@@ -4,4 +4,4 @@ test comment ... ok ([WILDCARD])
 
 test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out ([WILDCARD])
 
-[WILDCARD]/tests/subdir/comment.ts ... 100.000% (4/4)
+[WILDCARD]/tests/subdir/comment.ts ... 100.000% (3/3)
diff --git a/cli/tests/test_complex_coverage.out b/cli/tests/test_complex_coverage.out
new file mode 100644
index 000000000..1082d098c
--- /dev/null
+++ b/cli/tests/test_complex_coverage.out
@@ -0,0 +1,18 @@
+Check [WILDCARD]/tests/$deno$test.ts
+running 1 tests
+test complex ... ok ([WILDCARD])
+
+test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out ([WILDCARD])
+
+cover [WILDCARD]/tests/subdir/complex.ts ... 50.000% (10/20)
+  25 | export function unused(
+  26 |   foo: string,
+  27 |   bar: string,
+  28 |   baz: string,
+-----|-----
+  30 |   return complex(
+  31 |     foo,
+  32 |     bar,
+  33 |     baz,
+  34 |   );
+  35 | }
diff --git a/cli/tests/test_complex_coverage.ts b/cli/tests/test_complex_coverage.ts
new file mode 100644
index 000000000..06f17d87d
--- /dev/null
+++ b/cli/tests/test_complex_coverage.ts
@@ -0,0 +1,5 @@
+import { complex } from "./subdir/complex.ts";
+
+Deno.test("complex", function () {
+  complex("foo", "bar", "baz");
+});
diff --git a/cli/tests/test_coverage.out b/cli/tests/test_coverage.out
index 709d57d3b..83456bced 100644
--- a/cli/tests/test_coverage.out
+++ b/cli/tests/test_coverage.out
@@ -4,7 +4,7 @@ test returnsFooSuccess ... ok ([WILDCARD])
 
 test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out ([WILDCARD])
 
-cover [WILDCARD]/tests/subdir/mod1.ts ... 35.714% (5/14)
+cover [WILDCARD]/tests/subdir/mod1.ts ... 30.769% (4/13)
    3 | export function returnsHi(): string {
    4 |   return "Hi";
    5 | }
@@ -16,11 +16,11 @@ cover [WILDCARD]/tests/subdir/mod1.ts ... 35.714% (5/14)
   15 | export function throwsError(): void {
   16 |   throw Error("exception from mod1");
   17 | }
-cover [WILDCARD]/tests/subdir/print_hello.ts ... 25.000% (1/4)
+cover [WILDCARD]/tests/subdir/print_hello.ts ... 0.000% (0/3)
    1 | export function printHello(): void {
    2 |   console.log("Hello");
    3 | }
-cover [WILDCARD]/tests/subdir/subdir2/mod2.ts ... 62.500% (5/8)
+cover [WILDCARD]/tests/subdir/subdir2/mod2.ts ... 57.143% (4/7)
    7 | export function printHello2(): void {
    8 |   printHello();
    9 | }
diff --git a/cli/tests/test_run_combined_coverage.out b/cli/tests/test_run_combined_coverage.out
index 24ceb9955..9a638214e 100644
--- a/cli/tests/test_run_combined_coverage.out
+++ b/cli/tests/test_run_combined_coverage.out
@@ -12,8 +12,8 @@ ok ([WILDCARD])
 
 test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out ([WILDCARD])
 
-cover [WILDCARD]/tests/run_coverage.ts ... 100.000% (3/3)
-cover [WILDCARD]/tests/subdir/mod1.ts ... 57.143% (8/14)
+cover [WILDCARD]/tests/run_coverage.ts ... 100.000% (2/2)
+cover [WILDCARD]/tests/subdir/mod1.ts ... 53.846% (7/13)
   11 | export function printHello3(): void {
   12 |   printHello2();
   13 | }
@@ -21,12 +21,12 @@ cover [WILDCARD]/tests/subdir/mod1.ts ... 57.143% (8/14)
   15 | export function throwsError(): void {
   16 |   throw Error("exception from mod1");
   17 | }
-cover [WILDCARD]/tests/subdir/print_hello.ts ... 25.000% (1/4)
+cover [WILDCARD]/tests/subdir/print_hello.ts ... 0.000% (0/3)
    1 | export function printHello(): void {
    2 |   console.log("Hello");
    3 | }
-cover [WILDCARD]/tests/subdir/subdir2/mod2.ts ... 62.500% (5/8)
+cover [WILDCARD]/tests/subdir/subdir2/mod2.ts ... 57.143% (4/7)
    7 | export function printHello2(): void {
    8 |   printHello();
    9 | }
-cover [WILDCARD]/tests/test_coverage.ts ... 100.000% (5/5)
+cover [WILDCARD]/tests/test_coverage.ts ... 100.000% (4/4)
diff --git a/cli/tests/test_run_run_coverage.out b/cli/tests/test_run_run_coverage.out
index 97eb29264..81f86c9be 100644
--- a/cli/tests/test_run_run_coverage.out
+++ b/cli/tests/test_run_run_coverage.out
@@ -5,8 +5,8 @@ ok ([WILDCARD])
 
 test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out ([WILDCARD])
 
-cover [WILDCARD]/tests/run_coverage.ts ... 100.000% (3/3)
-cover [WILDCARD]/tests/subdir/mod1.ts ... 35.714% (5/14)
+cover [WILDCARD]/tests/run_coverage.ts ... 100.000% (2/2)
+cover [WILDCARD]/tests/subdir/mod1.ts ... 30.769% (4/13)
    7 | export function returnsFoo2(): string {
    8 |   return returnsFoo();
    9 | }
@@ -18,11 +18,11 @@ cover [WILDCARD]/tests/subdir/mod1.ts ... 35.714% (5/14)
   15 | export function throwsError(): void {
   16 |   throw Error("exception from mod1");
   17 | }
-cover [WILDCARD]/tests/subdir/print_hello.ts ... 25.000% (1/4)
+cover [WILDCARD]/tests/subdir/print_hello.ts ... 0.000% (0/3)
    1 | export function printHello(): void {
    2 |   console.log("Hello");
    3 | }
-cover [WILDCARD]/tests/subdir/subdir2/mod2.ts ... 25.000% (2/8)
+cover [WILDCARD]/tests/subdir/subdir2/mod2.ts ... 14.286% (1/7)
    3 | export function returnsFoo(): string {
    4 |   return "Foo";
    5 | }
diff --git a/cli/tests/test_run_test_coverage.out b/cli/tests/test_run_test_coverage.out
index 186ecba13..aa524966e 100644
--- a/cli/tests/test_run_test_coverage.out
+++ b/cli/tests/test_run_test_coverage.out
@@ -10,7 +10,7 @@ ok ([WILDCARD])
 
 test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out ([WILDCARD])
 
-cover [WILDCARD]/tests/subdir/mod1.ts ... 35.714% (5/14)
+cover [WILDCARD]/tests/subdir/mod1.ts ... 30.769% (4/13)
    3 | export function returnsHi(): string {
    4 |   return "Hi";
    5 | }
@@ -22,12 +22,12 @@ cover [WILDCARD]/tests/subdir/mod1.ts ... 35.714% (5/14)
   15 | export function throwsError(): void {
   16 |   throw Error("exception from mod1");
   17 | }
-cover [WILDCARD]/tests/subdir/print_hello.ts ... 25.000% (1/4)
+cover [WILDCARD]/tests/subdir/print_hello.ts ... 0.000% (0/3)
    1 | export function printHello(): void {
    2 |   console.log("Hello");
    3 | }
-cover [WILDCARD]/tests/subdir/subdir2/mod2.ts ... 62.500% (5/8)
+cover [WILDCARD]/tests/subdir/subdir2/mod2.ts ... 57.143% (4/7)
    7 | export function printHello2(): void {
    8 |   printHello();
    9 | }
-cover [WILDCARD]/tests/test_coverage.ts ... 100.000% (5/5)
+cover [WILDCARD]/tests/test_coverage.ts ... 100.000% (4/4)