Auto merge of #14675 - RalfJung:help, r=weihanglo

cargo test --help: clarify --tests and --benches

This tries to reduce the confusion expressed in #10936.

I am not sure what it means to "test a target in benchmark mode", this is copied verbatim from `cargo help test`.

Author: bors

src/bin/cargo/commands/bench.rs

@@ -36,9 +36,9 @@ pub fn cli() -> Command {
             "Benchmark only the specified example",
             "Benchmark all examples",
             "Benchmark only the specified test target",
-            "Benchmark all test targets",
+            "Benchmark all targets that have `test = true` set",
             "Benchmark only the specified bench target",
-            "Benchmark all bench targets",
+            "Benchmark all targets that have `bench = true` set",
             "Benchmark all targets",
         )
         .arg_features()

src/bin/cargo/commands/build.rs

@@ -22,9 +22,9 @@ pub fn cli() -> Command {
             "Build only the specified example",
             "Build all examples",
             "Build only the specified test target",
-            "Build all test targets",
+            "Build all targets that have `test = true` set",
             "Build only the specified bench target",
-            "Build all bench targets",
+            "Build all targets that have `bench = true` set",
             "Build all targets",
         )
         .arg_features()

src/bin/cargo/commands/check.rs

@@ -22,9 +22,9 @@ pub fn cli() -> Command {
             "Check only the specified example",
             "Check all examples",
             "Check only the specified test target",
-            "Check all test targets",
+            "Check all targets that have `test = true` set",
             "Check only the specified bench target",
-            "Check all bench targets",
+            "Check all targets that have `bench = true` set",
             "Check all targets",
         )
         .arg_features()

src/bin/cargo/commands/fix.rs

@@ -41,9 +41,9 @@ pub fn cli() -> Command {
             "Fix only the specified example",
             "Fix all examples",
             "Fix only the specified test target",
-            "Fix all test targets",
+            "Fix all targets that have `test = true` set",
             "Fix only the specified bench target",
-            "Fix all bench targets",
+            "Fix all targets that have `bench = true` set",
             "Fix all targets (default)",
         )
         .arg_features()

src/bin/cargo/commands/rustc.rs

@@ -38,9 +38,9 @@ pub fn cli() -> Command {
             "Build only the specified example",
             "Build all examples",
             "Build only the specified test target",
-            "Build all test targets",
+            "Build all targets that have `test = true` set",
             "Build only the specified bench target",
-            "Build all bench targets",
+            "Build all targets that have `bench = true` set",
             "Build all targets",
         )
         .arg_features()

src/bin/cargo/commands/rustdoc.rs

@@ -26,9 +26,9 @@ pub fn cli() -> Command {
             "Build only the specified example",
             "Build all examples",
             "Build only the specified test target",
-            "Build all test targets",
+            "Build all targets that have `test = true` set",
             "Build only the specified bench target",
-            "Build all bench targets",
+            "Build all targets that have `bench = true` set",
             "Build all targets",
         )
         .arg_features()

src/bin/cargo/commands/test.rs

@@ -41,9 +41,9 @@ pub fn cli() -> Command {
             "Test only the specified example",
             "Test all examples",
             "Test only the specified test target",
-            "Test all test targets",
+            "Test all targets that have `test = true` set",
             "Test only the specified bench target",
-            "Test all bench targets",
+            "Test all targets that have `bench = true` set",
             "Test all targets (does not include doctests)",
         )
         .arg(

src/doc/man/generated_txt/cargo-bench.txt

@@ -172,11 +172,11 @@ OPTIONS
            multiple times and supports common Unix glob patterns.
 
        --tests
-           Benchmark all targets in test mode that have the test = true
-           manifest flag set. By default this includes the library and binaries
-           built as unittests, and integration tests. Be aware that this will
-           also build any required dependencies, so the lib target may be built
-           twice (once as a unittest, and once as a dependency for binaries,
+           Benchmark all targets that have the test = true manifest flag set.
+           By default this includes the library and binaries built as
+           unittests, and integration tests. Be aware that this will also build
+           any required dependencies, so the lib target may be built twice
+           (once as a unittest, and once as a dependency for binaries,
            integration tests, etc.). Targets may be enabled or disabled by
            setting the test flag in the manifest settings for the target.
 
@@ -185,11 +185,11 @@ OPTIONS
            multiple times and supports common Unix glob patterns.
 
        --benches
-           Benchmark all targets in benchmark mode that have the bench = true
-           manifest flag set. By default this includes the library and binaries
-           built as benchmarks, and bench targets. Be aware that this will also
-           build any required dependencies, so the lib target may be built
-           twice (once as a benchmark, and once as a dependency for binaries,
+           Benchmark all targets that have the bench = true manifest flag set.
+           By default this includes the library and binaries built as
+           benchmarks, and bench targets. Be aware that this will also build
+           any required dependencies, so the lib target may be built twice
+           (once as a benchmark, and once as a dependency for binaries,
            benchmarks, etc.). Targets may be enabled or disabled by setting the
            bench flag in the manifest settings for the target.
 

src/doc/man/generated_txt/cargo-build.txt

@@ -89,26 +89,26 @@ OPTIONS
            multiple times and supports common Unix glob patterns.
 
        --tests
-           Build all targets in test mode that have the test = true manifest
-           flag set. By default this includes the library and binaries built as
-           unittests, and integration tests. Be aware that this will also build
-           any required dependencies, so the lib target may be built twice
-           (once as a unittest, and once as a dependency for binaries,
-           integration tests, etc.). Targets may be enabled or disabled by
-           setting the test flag in the manifest settings for the target.
+           Build all targets that have the test = true manifest flag set. By
+           default this includes the library and binaries built as unittests,
+           and integration tests. Be aware that this will also build any
+           required dependencies, so the lib target may be built twice (once as
+           a unittest, and once as a dependency for binaries, integration
+           tests, etc.). Targets may be enabled or disabled by setting the test
+           flag in the manifest settings for the target.
 
        --bench name…
            Build the specified benchmark. This flag may be specified multiple
            times and supports common Unix glob patterns.
 
        --benches
-           Build all targets in benchmark mode that have the bench = true
-           manifest flag set. By default this includes the library and binaries
-           built as benchmarks, and bench targets. Be aware that this will also
-           build any required dependencies, so the lib target may be built
-           twice (once as a benchmark, and once as a dependency for binaries,
-           benchmarks, etc.). Targets may be enabled or disabled by setting the
-           bench flag in the manifest settings for the target.
+           Build all targets that have the bench = true manifest flag set. By
+           default this includes the library and binaries built as benchmarks,
+           and bench targets. Be aware that this will also build any required
+           dependencies, so the lib target may be built twice (once as a
+           benchmark, and once as a dependency for binaries, benchmarks, etc.).
+           Targets may be enabled or disabled by setting the bench flag in the
+           manifest settings for the target.
 
        --all-targets
            Build all targets. This is equivalent to specifying --lib --bins

src/doc/man/generated_txt/cargo-check.txt

@@ -86,26 +86,26 @@ OPTIONS
            multiple times and supports common Unix glob patterns.
 
        --tests
-           Check all targets in test mode that have the test = true manifest
-           flag set. By default this includes the library and binaries built as
-           unittests, and integration tests. Be aware that this will also build
-           any required dependencies, so the lib target may be built twice
-           (once as a unittest, and once as a dependency for binaries,
-           integration tests, etc.). Targets may be enabled or disabled by
-           setting the test flag in the manifest settings for the target.
+           Check all targets that have the test = true manifest flag set. By
+           default this includes the library and binaries built as unittests,
+           and integration tests. Be aware that this will also build any
+           required dependencies, so the lib target may be built twice (once as
+           a unittest, and once as a dependency for binaries, integration
+           tests, etc.). Targets may be enabled or disabled by setting the test
+           flag in the manifest settings for the target.
 
        --bench name…
            Check the specified benchmark. This flag may be specified multiple
            times and supports common Unix glob patterns.
 
        --benches
-           Check all targets in benchmark mode that have the bench = true
-           manifest flag set. By default this includes the library and binaries
-           built as benchmarks, and bench targets. Be aware that this will also
-           build any required dependencies, so the lib target may be built
-           twice (once as a benchmark, and once as a dependency for binaries,
-           benchmarks, etc.). Targets may be enabled or disabled by setting the
-           bench flag in the manifest settings for the target.
+           Check all targets that have the bench = true manifest flag set. By
+           default this includes the library and binaries built as benchmarks,
+           and bench targets. Be aware that this will also build any required
+           dependencies, so the lib target may be built twice (once as a
+           benchmark, and once as a dependency for binaries, benchmarks, etc.).
+           Targets may be enabled or disabled by setting the bench flag in the
+           manifest settings for the target.
 
        --all-targets
            Check all targets. This is equivalent to specifying --lib --bins